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Application for funding from the World Bank Global Environment Facility
Weihai Botong Thermoelectricity Limited
Liability Company
Environmental Audit Report
Weihai Botong Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd.
August 2011
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Contents
1 PREFACE .................................................................................................................................................. 1-1
2 OVERVIEW .............................................................................................................................................. 2-1
2.1 CORPORATE PROFILE .......................................................................................................................... 2-1 2.2 ORGANIZATION ................................................................................................................................... 2-1 2.3 AUDITING DESCRIPTION ...................................................................................................................... 2-1
2.3.1 Objective and significance of auditing ..................................................................................... 2-1 2.3.2 Auditing basis ........................................................................................................................... 2-1 2.3.3 Auditing scope and time ........................................................................................................... 2-4 2.3.4 Executive standards .................................................................................................................. 2-4
3 PROFILE OF EXISTING PROJECT ..................................................................................................... 3-1
3.1 GEOGRAPHICAL POSITION ................................................................................................................... 3-1 3.2 PROJECT PROFILE ................................................................................................................................ 3-1 3.3 PLANE LAYOUT OF PLANT AREA .......................................................................................................... 3-2 3.4 PROCESS FLOW AND DRAINAGE PROCESS ............................................................................................ 3-4 3.5 MATERIALS CONSUMPTION ............................................................................................................... 3-13
3.5.1 Raw and auxiliary materials consumption ............................................................................. 3-13 3.5.2 Coal ........................................................................................................................................ 3-13 3.5.3 Limestone................................................................................................................................ 3-13 3.5.4 Water consumption ................................................................................................................. 3-13 3.5.5 Products.................................................................................................................................. 3-14
4 DISCHARGE OF MAIN POLLUTANTS AND MEASURES FOR PREVENTION AND CONTROL
4-1
4.1 DISCHARGE OF ATMOSPHERIC POLLUTANTS AND MEASURES FOR PREVENTION AND CONTROL ........... 4-1 4.1.1 Boiler flue gas .......................................................................................................................... 4-1 4.1.2 Dust pollution prevention and control ...................................................................................... 4-4 4.1.3 Summary ................................................................................................................................... 4-5
4.2 WASTEWATER DISCHARGE AND MEASURES FOR PREVENTION AND CONTROL ..................................... 4-5 4.3 NOISE POLLUTION PREVENTION AND CONTROL ................................................................................... 4-7
4.3.1 Noise level at each noise source and measures for prevention and control ............................. 4-7 4.3.2 Noise level after treatment measures are applied..................................................................... 4-8
4.4 SOLID WASTE DISCHARGE AND MEASURES FOR PREVENTION AND CONTROL ...................................... 4-9 4.5 ANALYSIS OF ENERGY CONSERVATION POTENTIAL AND IMPROVEMENT PLAN .................................. 4-10
4.5.1 Operating temperature of boiler ............................................................................................. 4-10 4.5.2 Turboset operating performance and efficiency ..................................................................... 4-10 4.5.3 Frequency control speed regulation device for matching fan of boiler .................................. 4-11 4.5.4 Effect of energy conservation and emission reduction after improvement ............................. 4-12
5 ENVIRONMENTAL MANAGEMENT AND MONITORING ............................................................ 5-1
5.1 ENVIRONMENTAL MANAGEMENT ........................................................................................................ 5-1 5.1.1 Environmental management organization ................................................................................ 5-1 5.1.2 Specific duties and authority .................................................................................................... 5-2
5.2 ENVIRONMENTAL MONITORING .......................................................................................................... 5-3 5.2.1 Exhaust gas online monitoring ................................................................................................. 5-3 5.2.2 Routine monitoring by Weihai Environmental Monitoring Station .......................................... 5-3
5.3 SUMMARY........................................................................................................................................... 5-4
6 POWER PLANT SAFE PRODUCTION MANAGEMENT ................................................................. 6-5
6.1 SAFE PRODUCTION MANAGEMENT STATUS QUO .................................................................................. 6-5 6.2 RELATED SAFETY MANAGEMENT SYSTEM........................................................................................... 6-5 6.3 IMPLEMENTATION OF SAFE PRODUCTION MANAGEMENT SYSTEM ....................................................... 6-5 6.4 SUMMARY........................................................................................................................................... 6-6
7 PROFILE OF OCCUPATIONAL HEALTH ......................................................................................... 7-1
7.1 OCCUPATIONAL DISEASE PREVENTION AND CONTROL ........................................................................ 7-1 7.2 MEASURES FOR OCCUPATIONAL DISEASE PREVENTION AND CONTROL ............................................... 7-1 7.3 OUTLAY FOR OCCUPATIONAL DISEASE PREVENTION AND CONTROL ................................................... 7-2 7.4 IMPLEMENTATION OF OCCUPATIONAL HEALTH PREVENTION AND CONTROL ....................................... 7-2
7.5 SUMMARY ........................................................................................................................................... 7-3
8 RISKS AND MEASURES FOR PREVENTION AND CONTROL ..................................................... 8-1
8.1 PHYSICAL RISK IDENTIFICATION ......................................................................................................... 8-1 8.2 EQUIPMENT AND PRODUCTION EQUIPMENT HAZARD ANALYSIS .......................................................... 8-4 8.3 HUMAN FACTORS, MANAGEMENT FACTORS AND EXTERNAL ENVIRONMENTAL FACTORS ................... 8-5 8.4 IDENTIFICATION OF FIRE, EXPLOSION HAZARDS .................................................................................. 8-5 8.5 TOXICITY IDENTIFICATION .................................................................................................................. 8-6 8.6 PRODUCT DEVICE RISK IDENTIFICATION.............................................................................................. 8-6 8.7 SUMMARY ........................................................................................................................................... 8-6
9 EMERGENCY PLAN ............................................................................................................................... 9-1
9.1 POWER PLANT EMERGENCY PLAN PREPARATION ................................................................................. 9-1 9.2 POWER PLANT EMERGENCY PLAN OVERVIEW...................................................................................... 9-1
9.2.1 Comprehensive emergency rescue plan for serious production accident ................................. 9-1 9.2.2 Special emergency rescue plan for serious production accident .............................................. 9-2
9.3 SUMMARY ........................................................................................................................................... 9-6
10 SOCIAL IMPACT ................................................................................................................................... 10-1
10.1 RELATIONSHIP BETWEEN ENTERPRISE AND EMPLOYEES ................................................................... 10-1 10.1.1 Personnel system .................................................................................................................... 10-1 10.1.2 Employee training .................................................................................................................. 10-1
10.2 RELATIONSHIP BETWEEN ENTERPRISE AND THE LOCAL RESIDENTS ................................................... 10-2 10.3 RELATIONSHIP BETWEEN ENTERPRISE AND SOCIETY ......................................................................... 10-2 10.4 SUMMARY ......................................................................................................................................... 10-2
11 AUDITING CONCLUSION ................................................................................................................... 11-1
11.1 CONCLUSION .................................................................................................................................... 11-1 11.2 MEASURES AND SUGGESTIONS .......................................................................................................... 11-2
1 Preface
Weihai Environmental Protection Research Institute Co., Ltd. 1-1
1 Preface
The objective of environmental auditing is to historically review the existing production
facilities of power plant, identify the problems in production process, pollution prevention and
control, environmental management, safety management, occupational health, risk prevention
and control, emergency plan, social impacts, etc. and propose corresponding solutions.
The application of environmental auditing can effectively reveal the problems in environmental
management, urge related departments to intensify the awareness of environmental protection,
enforce environmental protection policy strictly, as well as urge an enterprise to build a
favorable and responsible image on the basis of long-term development and social
responsibility, highlight environmental protection and thus to intensify the awareness of
environmental protection of the society.
Weihai Botong Thermoelectricity Limited Liability Company (hereinafter referred to as
Botong Thermoelectricity) is a state-owned energy enterprise engaging in heat supply and
power generation established in June 1998, mainly undertaking the task for providing industrial
steam and civil heat supply to Weihai Economic and Technical Development Zone. The
Company now boasts six boilers, three generator sets, with the installed capacity of 60MW and
boiler capacity of 705t/h, 281 employees, total assets of RMB 597 million Yuan, including net
assets of RMB 160 million Yuan. In 2010, the Company supplied heat of 449.81×104GJ/a,
generated electricity of 16152.72×104KWh/a and consumed standard coal of 0.2294 million t/a.
Botong Thermoelectricity also consumes a huge quantity of coal, water resource and emitted
massive pollutants including SO2, smoke, NO2, etc. into the atmosphere while generating
electricity with coal.
The Report conducts an environmental auditing to Botong Thermoelectricity in the aspects of
existing production process, pollution prevention and control, environmental management,
safety management, occupational health, risk prevention and control, emergency plan, social
impact, etc.
2 Overview
Weihai Environmental Protection Research Institute Co., Ltd.
2-1
2 Overview
2.1 Corporate profile
Weihai Botong Thermoelectricity Limited Liability Company (hereinafter referred to as
Botong Thermoelectricity) is a state-owned energy enterprise engaging in heat supply and
power generation established in June 1998, mainly undertaking the task for providing industrial
steam and civil heat supply to Weihai Economic and Technical Development Zone. The
Company now boasts six boilers, three generator sets, with the installed capacity of 60MW and
boiler capacity of 705t/h, 281 employees, total assets of RMB 597 million Yuan, including net
assets of RMB 160 million Yuan.
2.2 Organization
See 2.2-1 for the organization chart of Botong Thermoelectricity.
2 Overview
Weihai Environmental Protection Research Institute Co., Ltd.
2-1
Office Materials
Department
Financial
Department
Enterprise
Planning
Department
Safety
Training
Department
Production
Technology
Department
Operation
Department
Customer
Center
Design Office Installation
Department
Maintenance
Department
Deputy General
Manager
Board of Directors
General Manager
Construction
Management
Department
Labor Union
and Logistics
Deputy General
Manager
Deputy General
Manager
Heat Supply
Center
Deputy General
Manager
Building
Materials
Department
2 Overview
Weihai Environmental Protection Research Institute Co., Ltd.
2-1
Figure 2.2-1 Organization Chart of Botong Thermoelectricity
2.3 Auditing description
2.3.1 Objective and significance of auditing
2.3.1.1 Objective
Perform production site investigation, documents examination and necessary tests, analyze the
environmental protection condition of enterprise, confirm the environmental protection level,
find out existing problems and risks, analyze and compare the potential for environmental
protection, propose practical measures and suggestions for environmental protection, provide
authentic and reliable environmental protection information to the government, guide the
enterprise to improve the level of environmental management and promote the sustainable
development of economy and environment.
2.3.1.2 Significance
1. Needs for determining and releasing the environmental responsibility of enterprise
The environmental responsibility refers to that born by the enterprise on environmental
pollution treatment and ecological environment protection. The environmental auditing is
applied to monitor, evaluate and identify the above responsibilities of enterprise, identify and
release the responsibilities of the audited enterprise in a fair and special way, identify the scope
and nature of responsibilities and protect the lawful rights of the enterprise.
2. Internal demands for sustainable operation of the enterprise
The enterprise engaging in production, operation, market development, etc. must pay a
particular attention to the environmental image and achievement. The mistake in environmental
policy will bring challenges to the managers, lead to financial failure and even bankruptcy and
liquidation. The enterprise can build a favorable internal and external environmental and
ensure the sustainable development through the emphasis on environmental protection and
active involvement in environmental treatment and protection.
3. Important components for management auditing of enterprise
The environmental auditing supervises and evaluates the environmental management activities
of enterprise in management plan, control procedure and control method, analyzes the internal
factors affecting enterprise management benefit and efficiency, improves the control system for
environmental management, urges the enterprise to rationally develop and utilize
environmental resource in fulfilling the social responsibility. On this regard, the environmental
auditing performing analysis and evaluation to the environmental management system is an
important component of enterprise management and auditing.
4. Needs for developing the internal and domestic market
The environmental auditing can assist the Chinese enterprises to develop the international
market as well as the foreign enterprises to settle in China, thus to make contributions to global
economic integration and realize the objective of “mankind has only one home - the earth”.
2.3.2 Auditing basis
2.3.3 Basis of laws, regulations and policy
1. Environmental Protection Law of the People’s Republic of China (Dec. 26, 1989);
2. Law of the People’s Republic of China on the Prevention and Control of
Environmental Noise Pollution (Apr. 1, 1996);
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 2-2
3. Law of the Peoples Republic of China on the Prevention and Control of Atmospheric
Pollution (May 15, 1996);
4. Law of the People's Republic of China on the Prevention and Control of Water
Pollution (Mar. 1, 1997);
5. Law of the People’s Republic of China on the Prevention of Environmental Pollution
Caused by Solid Waste (Sep. 1, 2000);
6. Law of the People’s Republic of China on the Protection of Cultural Relics (Oct.
2002);
7. Law of the Peoples Republic of China on the Promotion of Cleaner Production (Jan. 1,
2003);
8. Law of the People's Republic of China on Appraising of Environment Impacts (Sep. 1,
2003);
9. Decision on Implementing Scientific Concept of Development and Strengthening
Environmental Protection by the State Council (Guofa[2005] 39);
10. List of Construction Project Environmental Protection Classification Management
(Order No. 2 of the Ministry of Environmental Protection, Aug. 2008);
11. The Guideline Catalogue for Industrial Restructuring (2011 version) (Mar. 27, 2011);
12. Huanjian [1993]324 Notice on Strengthening the Environmental Impact Evaluation
Management of Projects Constructed with Loans from International Financial
Organizations of the Ministry of Environmental Protection of the People’s Republic of
China (Jun. 21, 1993);
13. Fagaihuanzi [2004]2505 Notice on the Printing and Distribution of Special Long-term
Planning for Energy Conservation of the National Development and Reform
Commission (Nov. 25, 2004);
14. Guofa [2005]39 Decision on Implementing the Scientific Concept of Development and
Stepping up Environmental Protection by the State Council (2005);
15. Huanfa [2006]28 the Provisional Measure of Public Participating in Environmental
Assessment of the Ministry of Environmental Protection of the People’s Republic of
China (Mar. 2006);
16. Guofa [2007]15 Notice on the Printing and Distribution of the Integrated Work
Program for Energy Conservation and Emission Reduction of the State Council (May
23, 2007);
17. Guofa [2009]38 Notice of the State Council on the Approval and Forwarding of the
Suggestions of the National Development and Reform Commission and Other
Departments on Controlling the Excess Production Capacity and Repeated
Construction and Guiding the Healthy Development of Industries (Sep. 26, 2009);
18. Guofa [2010]7 Notice of the State Council on Further Strengthening the Elimination of
Backward Production Capacities (Feb. 6, 2010);
19. Ordinance of Shandong Province on Environmental Protection (amended by the
Standing Committee of Shandong Provincial People’s Congress on Dec. 7, 2001);
20. Method of Shandong Province for Implementing the Law of the People's Republic of
China on Evaluation of Environmental Effects (approved by the 17th
Meeting of the
Standing Committee of the 10th
Shandong Provincial People’s Congress on Nov. 25,
2005);
2 Overview
Weihai Environmental Protection Research Institute Co., Ltd.
2-3
21. Method of Shandong Province for Implementing Law of the People’s Republic of
China of the Prevention of Environmental Pollution Caused by Solid Waste;
22. Ordinance of Shandong Province on the Prevention and Treatment of Environmental
Noise;
23. Ordinance of Shandong Province on the Prevention and Treatment of Water Pollution;
24. Suggestions of Shandong Provincial People’s Government on Implementing
(Guofa[2005]39) Decision on Implementing Scientific Concept of Development and
Strengthening Environmental Protection by the State Council (Luzhengfa [2006]72);
25. Notice of the General Office of Shandong Provincial People’s Government on
Strengthening the Simultaneous Management of Environmental Impact Evaluation and
Construction Project Environmental Protection Facilities in Three Aspects;
26. Notice of the General Office of Shandong Provincial People’s Government on
Forwarding the Suggestions of Provincial Economic and Trade Commission on
Speeding up the Elimination of Outmoded Products and Promoting Structural
Optimization and Upgrading (Luzhengbanfa [2006]96);
27. Notice of Shandong Provincial People’s Government on Furthering Strengthening
Urban Water Conservation (Luzhengfa [2007]4);
28. Notice of Shandong Provincial People’s Government on the Printing and Distribution
of the Integrated Work Program for Energy Conservation and Emission Reduction
(Luzhengfa [2007]39 of Shandong Provincial People’s Government);
29. Suggestions for further Implementing Environmental Evaluation and “Three
Simultaneous Management” System (Shandong Provincial Environmental Protection
Bureau Luhuanfa [2007]131);
30. Major Principles Shandong Provincial Environmental Protection Bureau for Handling
with Serious Environmental Protection Problems (trial) (Luhuanfa [2007]178);
31. Implementation Suggestions for Building an Environmental Safety Prevention and
Control System for the Whole Province (Luhuanfa [2009]80);
32. Suggestions of Weihai Municipal People’s Government on further Implementing
Scientific Concept of Development and Strengthening Environmental Protection
(Weihai Municipal People’s Government Weizhengfa [2006]71);
33. Suggestions of Weihai Municipal People’s Government on Implementing the Notice of
Shandong Provincial People’s Government on Furthering Strengthening Urban Water
Conservation (Luzhengfa [2007]4) (Weizhengfa [2007]19, Apr. 6, 2007);
34. Notice on further Strengthening the Regulated Management of Hazardous Wastes and
Building a Hazardous Wastes Recycling and Exchange System in an All-around Way
(Weihuanfa [2009]120);
35. Notice on Printing and Distribution of the Program for Publicizing Environmental
Impact Evaluation Information of Construction Projects (Weihuanfa [2009]226).
2.3.3.1 World Bank’s regulations
1. World Bank OP 4.01/ (Environmental Evaluation) (Jan. 1999);
2. World Bank OP4.11 (Material Culture Resources, Jul. 2006;
3. World Bank OP/BP4.04 (Natural Habitat (Sep. 1995);
4. World Bank OP/BP4.12 (Involuntary Resettlement) (Jun. 1990);
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 2-4
5. World Bank OHS Guide for Thermal Power Stations (Jun. 18, 2008);
6. World Bank Information Acquisition Policy (Jul. 1, 2010).
2.3.4 Auditing scope and time
The environmental auditing performed from 2008 to 2010 covers the whole plant of
Botong Thermoelectricity.
2.3.5 Executive standards
2.3.5.1 Environmental quality standards
1. Ambient air
Ambient Air Quality Standard (GB3095-1996) grade II is applied for SO2, NO2, TSP, PM10.
See table 2.3-1 for details.
Table 2.3-1 Ambient Air Quality Evaluation Standard
Pollutants
Density limit (mg/m3)
Source of standard Hourly
average
Daily
average
Annual
average
SO2 0.50 0.15 0.06
Ambient Air Quality Standard
(GB3095-1996) grade II
NO2 0.24 0.12 0.08
TSP -- 0.30 0.20
PM10 -- 0.15 0.10
2. Underground water
The Underground Water Quality Standard (GB/T14848-93) grade Ⅲ is applied for
underground. See table 2.3-2 for details.
Table 2.3-2 Underground Water Quality Standard (unit: mg/L, excluding pH)
Pollutant name Underground Water Quality Standard
(GB/T14848-93) grade Ⅲ
pH 6.5-8.5
Total hardness CaCO3 (mg/L) ≤450
Sulfate (mg/L) ≤250
Permanganate indicator (mg/L) ≤3.0
Fluoride (mg/L) ≤1.0
Total coliform (mg/L) ≤3.0
Chloride (mg/L) ≤250
Nitrate nitrogen (mg/L) ≤20
Nitrite (mg/L) ≤0.02
Ammonia nitrogen (mg/L) ≤0.2
3. Environmental noise
The Environmental Quality Standard for Noise (GB3096-2008) grade 1and 3 shall apply to the
acoustic environment. See table 2.3-3 for the standard limit.
Table 2.3-3 Environmental Noise (Unit: dB)
2 Overview
Weihai Environmental Protection Research Institute Co., Ltd.
2-5
Functional zone of noise Time
Daytime Night
Grade 1 55 45
Grade 3 65 55
2.3.5.2 Pollutant discharge standard
1. Atmospheric pollutant discharge standard
The first time interval standard of Emission Standard of Air Pollutants for Thermal Power
Plants (DB37/664-2007) will apply for the exhaust gas discharged by boilers 1~3# (3×75t/h).
The second time interval grade B of Emission Standard of Air Pollutants for Thermal Power
Plants (DB37/664-2007) will apply for the exhaust gas discharged by boilers 4~5# (2×130t/h).
The third time interval standard will apply for the exhaust gas discharged by boiler 6#
(1×220t/h). The standard limit of discharge is detailed in table 2.3-4.
Table 2.3-4 Atmospheric Discharge Standard of Thermal Power Plant
Pollutant
name
Discharge density (mg/m3)
First time interval Second time interval grade
B Third time interval
2007.5.1 2010.1.1 2007.5.1 2007.5.1
Smoke 200 100 50 50
SO2 1200 800 400 400
NOX 800 400 400 400
2. Sewage discharge standard
The Wastewater Quality Standards for Discharge to Municipal Sewers (CJ343-2010) will
apply for the discharge of sewage. The standard limit is detailed in table 2.3-5.
Table 2.3-5 Standard of Water Quality of Sewage Discharged into Urban Sewers
(Unit: mg/L, pH dimensionless)
Item PH SS
(mg/L)
CODCr
(mg/L)
BOD5
(mg/L)
Ammonia
nitrogen
(mg/L)
Sulfide
(mg/L)
Petroleum
(mg/L)
Volatile
phenol
(mg/L)
Wastewater
Quality
Standards for
Discharge to
Municipal
Sewers
(CJ343-2010)
GRADE B
6.5~9.5
400 500 350 45 1.0 20 1.0
3. Noise discharge standard
Grade 3 of the Emission Standard for Industrial Enterprises Noise at Boundary 》
(GB12348-2008), 65dB in daytime, 55dB at night.
4. Solid waste storage standard
Standard for Pollution Control on the Storage and Disposal Site for General Industrial Wastes
(GB18599-2001).
3 Profile of existing project
Weihai Environmental Protection Research Institute Co., Ltd.
3-1
3 Profile of existing project
3.1 Geographical position
Botong Thermoelectricity is situated at No. 221, South Qingdao Road. Its site is selected
according to the General Urban Planning of Weihai City (2004~2020) and the Urban Heating
Power Planning of Weihai City. The plant site neighbors Qingdao Road in the west, Xujia
River crossing the urban area in the north and northwest, Zhongli Village 260 m in the east
isolated by Huanghai Road, Songjiawa Village (Lanshan Town) 180 m in the south isolated by
Botong Road and railway viaduct (Weihai Railway Station to Weihai New Port). The project
has a favorable geographical position and convenient transportation.
Geographical position of Botong Thermoelectricity is detailed in figure 3.1-1.
3.2 Project profile
Weihai Botong Thermoelectricity Limited Liability Company (hereinafter referred to as
Botong Thermoelectricity) is a state-owned energy enterprise engaging in heat supply and
power generation established in June 1998, mainly undertaking the task for providing industrial
steam and civil heat supply to Weihai Economic and Technical Development Zone. The
Company now boasts six boilers, three generator sets, with the installed capacity of 60MW and
boiler capacity of 705t/h, 281 employees, total assets of RMB 597 million Yuan, including net
assets of RMB 160 million Yuan. In 2010, the Company supplied heat of 449.81×104GJ/a,
generated electricity of 16152.72×104KWh/a and consumed standard coal of 0.2294 million
t/a.
The basic information on Botong Thermoelectricity is detailed in table 3.2-1. The main
environmental protection facilities are summarized in table 3.2-2.
Table 3.2-1 Basic Information on Botong Thermoelectricity
Item Boiler tonnage (t/h) Unit scale
(MW)
Total
capacity
(MW)
Remarks
Boilers 1#~3
#
Units 1#-2
#
3×75 2×15 30
Approved by the State Environmental
Protection Bureau (present Ministry of
Environmental Protection of the People’s
Republic of China) in Dec. 1996, accepted
by Shandong Provincial Environmental
Protection Bureau (present Provincial
Environmental Protection Department) in
2004.
Boiler 4#, boiler
5#, unit 3
#
2×130 1×30 30
Approved by Shandong Provincial
Environmental Protection Bureau (present
Provincial Environmental Protection
Department) in Aug. 2004
Boiler 6# 1×220 — —
Approved by Weihai Municipal
Environmental Protection Bureau in Jun.
2010
Whole
plant
Capacity 3×75+2×130+1×220 2×15+1×30
60 — Operating
method
Heating period:
1×75+2×130+1×220 2×15+1×30
Non-heating period:
1×130 1×15
Figure 3.1-1 Geographical Position (scale 1: 1260)
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 3-2
Table 3.2-2 Existing Environmental Protection Facilities
Item Treatment facilities Exhaust funnel Effect
Dedusting
facilities
Boilers 1#~3
# apply three-electric field
electrostatic precipitator
Chimney 1#
(120m high, inner
diameter of outlet
is 3.0m)
99.4% dedusting
efficiency, qualified
discharge
Boiler 4# applies three-electric field electrostatic
precipitator Chimney 2
#
(150m high, inner
diameter of outlet
is 5.0m)
99.78% integrated
dedusting efficiency,
qualified discharge
Boilers 5#~6
# apply four-electric field
electrostatic precipitator
99.8% integrated
dedusting efficiency,
qualified discharge
Desulfuration
facilities
Boilers 1#~3
# apply calcium spraying
desulfuration inside boiler —
Desulfuration
efficiency above
50%, qualified
discharge
Boilers 4#~6
# apply recirculating fluidized bed
boiler+limestone-gysum wet method
desulfuration,
—
Desulfuration
efficiency above
90%, qualified
discharge
Coal yard dust Cofferdam, spray system, coal sinking pool, etc. — Effective reduction of
coal dust
Wastewater
99% production wastewater will be used.
Domestic sewage and some industrial wastewater
will be drained into the sewage treatment plant of
Weihai Zhongrong Anxin Water Resource
Development Co., Ltd. for treatment.
— Qualified discharge
Noise Low noise equipment, silencer, rational
distribution, landscaping, etc. —
Noise acceptable at
boundary
Flyash, slag
Ash and slag handling system, ash silo; the ash
and slag are handled separately and then utilized
by Botong New Building Materials Co., Ltd. to
the north of the plant site; ash silo capacity:
2×560m3
— 100% recycling
Domestic
garbage Collect to Weihai Garbage Disposal Plant — Zero discharge
3.3 Plane layout of plant area
The existing project of Botong Thermoelectricity covers an area of 0.15 million m2. The whole
plant area is distinctive in production process and functional zones. The main power house is in
south-north direction, with the fixed end facing the west and the expansion end facing the east.
The main power house area is provided with turbine house, deoxygenization bunker bay, boiler
house from the south to the north. Dirt catcher, flue and chimney, broken coal handling system,
dry coal shed, etc. are arranged in sequence behind the boiler. The coal yard is arranged in the
east. The main control building and power transformation and distribution facilities are
arranged to the south of turbine house. The chemical water treatment system, natural
ventilation cooling tower, etc. are arranged west of the turbine house; the ash silo and Weihai
Botong New Building Materials Co., Ltd. are situated to the north of the plant area; the main
power house area is isolated by greenbelts and roads in plant area into front area of the plant
and auxiliary production area; such area is mainly composed of office building, staff dining
hall, bathing pool, guest house, etc.
General layout of Botong Thermoelectricity is shown in figure 3.3-1.
3 Profile of existing project
Weihai Environmental Protection Research Institute Co., Ltd.
3-3
Figure 3.3-1 General Layout of Botong Thermoelectricity
Desulfuration
outside boiler
Integrated desulfuration
building
General drain
outlet
Boiler 1#
Boiler
2#
Boiler
3#
Boiler
4#
Boiler
5#
Boiler 6#
Three-electric field
dedusting
Boiler 5# four-electric
field dedusting
Semi-closed coal yard
Limestone powdercabin
Temporary slag yard
Ash
silo
Reserved denitration
device
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 3-4
3.4 Process flow and drainage process
1. Cogeneration boiler
Boilers 1#~5
# are cogeneration boilers, whose major process flow is: the coal at coal yard is
screened, crushed and conveyed into boiler for burning; the chemical energy of coal inside
boiler is changed to heat energy; the boiler produces steam, which will enter turbine to impel
the generator for changing the mechanical energy into electricity; the electricity is then
supplied to customers through power distribution system. Some steam in turbine will enter
backpressure unit 2# and be discharged at the pressure of 0.981MPa to steam users; some steam
will enter extraction condensing unit and be discharged at the pressure of 0.981MPa to steam
users and for backheating; few steam will act and then be discharged to low pressure heater for
heating the condensed water; the rest steam will work and be discharged to condenser and be
cooled into condensed water by circulating water and be heated by low pressure heater and
then be supplied to the deaerator. Then, it will be heated by high pressure heater together with
the make-up water and then be pumped into boiler to become steam, thus forming a
cogeneration system circulating steam and water.
2. Heat supply boiler
Boiler 6#
is a heat supply boiler, whose major process flow is: the coal at coal yard is screened,
crushed and conveyed into boiler for burning; the chemical energy of coal inside boiler is
changed to heat energy; the boiler produces steam and supplies heat supply network water to
users through pumps; the users apply central heating radiator for heat supply; the heat supply
network water with reduced temperature flows back to the coagulator.
The process flow of boilers 1#~5# and sewage production process are detailed in figure 3.4-1.
The process flow of boiler 6# and sewage production process are detailed in figure 3.4-2.
3. External desulfurzation process
Such process is mainly composed of flue gas system, SO2 absorption system, absorbent
preparation system, gypsum treatment system, wastewater treatment system, etc.
① Flue gas system
When the FGD device is operating, the flue gas from boiler draught fan will enter
absorption tower for desulfuration. Then, after the water mist is removed by demister, the flue
gas will be discharged into the atmosphere by brick flue.
② Absorbent preparation system
Limestone slurry made of limestone will be used as absorbent. Limestone powder will be
delivered to limestone powder silo by pneumatic transmission system, and after being
measured by electric star feeder at the bottom of powder silo and belt weighing feeder, the
limestone powder will be delivered to limestone slurry tank and made into limestone slurry
with the density of 25%. The slurry will be pumped to absorption tower for use. The outlet of
slurry pump is provided with flow rate, density measurement and control devices, which can
perform automatic control according to flue gas and SO2 density.
③ Absorption tower system
The absorption tower system is a vital component of flue gas desulfuration project, mainly
comprising an absorption tower, a demister, a circulating slurry pump and an oxygenization
fan, etc. The absorption tower is a spray tower. The flue gas enters into the high speed
absorption zone of absorption tower, collides with absorption slurry sprayed by nozzle in
reverse direction with a high speed, conducts chemical reaction with absorbent, thus to
remove the sulfur dioxide in flue gas. The purified flue gas will be discharged after demisting.
3 Profile of existing project
Weihai Environmental Protection Research Institute Co., Ltd.
3-5
In the circulating slurry pool of absorption tower, calcium sulfite will be oxidized by air into
calcium sulfate. The gypsum drainage pump will deliver gypsum slurry to gypsum dewatering
system through absorption tower.
④ Gypsum slurry dewatering system
The slurry drained by absorption tower is a mixture of gypsum (CaSO4·2H2O) and other
salts, including MgSO4, MgCL2, Na2SO4, NaCL, CaCL2, limestone (CaCO3), calcium fluoride
(CaF2), ash content, etc. The gypsum slurry will be delivered to gypsum swirler station by
drainage pump for first dewatering and then buffered by gypsum slurry box and fall on vacuum
belt dewatering machine for secondary dewatering. The residual water quantity of gypsum
discharged by dewatering machine will not exceed 10%. The gypsum will fall into gypsum
storeroom from the trail of vacuum belt dewatering machine.
⑤ Process water system
According to the water quality required by each process, the main water consumption
processes are divided as following: flushing water for FDG’s operation of demister; flushing
water for slurry conveying equipment, running piping, storage tank, belt dewatering machine,
etc.; make-up water for absorption tower slurry pool, water for absorbent preparation system;
water for vacuum pump, cooling water for desulfuration system auxiliary machinery, fan, etc.,
water for slurry pump shaft seal, etc. The process water system will be supplied by reuse water.
All the wastewater will be recycled.
⑥ Wastewater treatment system
The wastewater flowed from gypsum swirler will be pumped into wastewater treatment
system by wastewater pump and it will enter into purified water tank in sequence after
neutralization, sedimentation, flocculation, concentration, purification, etc. Most of the purified
water will be recycled and little water will be used by Botong New Building Materials Co., Ltd.
for ash mixing. The sludge reaching a certain quantity at the bottom of concentration and
purification pool will be delivered into centrifugal dewatering machine for dewatering. The
dewatered gypsum will be transported to Botong New Building Materials Co., Ltd. for
recycling. The water discharged by dewatering machine will be used for dry ash mixing.
The process of desulfuration system is detailed in figure 3.4-3.
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自来水
化学水处理装置
化
学
废
水
中 和 池
补充水
循环冷却水
循环冷却水泵
凝结
水泵
低压加热器
除氧器
给水泵
高压加热器
抽汽供热
发电机 汽轮机
凝汽机
主蒸汽
煤
斗
锅
炉
炉
渣
省煤器
空预器
排
污
临时渣场
除
尘
器
除灰系统
烟气
灰引风机
灰库
建材厂综合利用
煤棚
回用
输
煤
机石灰石粉
锅炉烟气
烟囱
建材厂综合利用
炉外脱硫
建材厂综合利用
Figure Boilers 3.4-1 1#~5
# process flow and process of sewage production
3 Profile of existing project
Weihai Environmental Protection Research Institute Co., Ltd.
3-7
自来水 Tap water
中 和 池 Neutralization pool
回用
Recycling
化学水处理装置 Chemical water treatment device
补充水 Make-up water
循环冷却水 Circulating cooling water
循环冷却水泵 Circulating cooling water pump
发电机 Generator
抽汽供热 Steam extraction and heat supply
汽轮机 Turbine
主蒸汽 Main steam
煤斗 Coal bucket
排污 Drainage
锅炉 Boiler
锅炉烟气 Boiler flue gas
省煤器 Economizer
空预器 Air preheater
烟气 Flue gas
除尘器 Dirt catcher
锅炉烟气 Boiler flue gas
引风机 Draught fan
炉外脱硫 External desulfurzation
输煤机 Coal conveyor
烟囱 Chimney
煤棚 Coal shed
石灰石粉 Limestone powder
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灰库 Ash silo
除灰系统 Ash handling system
建材厂综合利用 Comprehensive utilization by building materials plant
建材厂综合利用 Comprehensive utilization by building materials plant
凝汽机 Steam turbine
凝结水泵 Condensed water pump
低压加热器 Low pressure heater
除氧器 Deaerator
炉渣 Slag
给水泵 Feed pump
高压加热器 High pressure heater
建材厂综合利用 Comprehensive utilization by building materials plant
临时渣场 Temporary slag yard
3 Profile of existing project
Weihai Environmental Protection Research Institute Co., Ltd.
3-9
生水
软化水处理装置除氧器
给水泵
高压加热器
主蒸汽
锅
炉
炉
渣
省煤器
空预器
排
污
除
尘
器
除灰系统
烟气
灰引风机
炉渣综合利用厂
煤场
图2-5 拟建工程工艺流程图
粉煤灰综合利用厂
碎
煤
机
软
化
废
水
缓冲器
再生液水泵
循环水泵
综合循环池
工艺水 石灰石
储仓
脱硫石膏
Figure 3.4-2 Boiler 6
# Process Flow and Sewage Production Process
生水 Raw water
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Weihai Environmental Protection Research Institute Co., Ltd. 3-10
软化水处理装置 Softened water treatment device
软化废水 Softened wastewater
除氧器 Deaerator
给水泵 Feed pump
高压加热器 High pressure heater
缓冲器 Buffer
炉渣 Slag
主蒸汽 Main steam
排污 Drainage
锅炉 Boiler
省煤器 Economizer
空预器 Air preheater
烟气 Flue gas
除尘器 Dirt catcher
灰 Ash
炉渣综合利用厂 Slag comprehensive utilization plant
除尘器 Dirt catcher
引风机 Draught fan
除灰系统 Ash handling system
粉煤灰综合利用厂 Coal ash comprehensive utilization plant
脱硫石膏 Desulfuration gypsum 综合循环池 Integrated circulating pool 再生液水泵 Regenerant pump 循环水泵 Circulating water pump
工艺水 Process water
图 2-5 拟建工程工艺流程图 Figure 2-5 Process flow of the proposed project
石灰石储仓 Limestone storage bunker
碎煤机 Coal breaker
3 Profile of existing project
Weihai Environmental Protection Research Institute Co., Ltd.
3-11
煤场 Coal yard
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7
9
5
2
除尘后
烟气1
4
工艺水
3
6
8
烟囱
工艺水
纯碱
工艺水 Process water
除尘后烟气 Dedusted flue gas
烟囱 Chimney
纯碱 Soda ash
Figure 3.4-3 Desulfuration System Process Flow
3 Profile of existing project
Weihai Environmental Protection Research Institute Co., Ltd.
3-13
3.5 Materials consumption
3.5.1 Raw and auxiliary materials consumption
Main energy and raw materials consumed by Botong Thermoelectricity from 2008 to 2010 are
listed in table 3.4-1.
Table 3.4-1 Main energy and raw materials consumed by
Botong Thermoelectricity from 2008 to 2010
Main energy
and raw
materials
Annual consumption Remarks
2008 2009 2010
Standard coal 10,000 t/a 156600 208908 229423
Water 10,000 t/a 111.1 146.9 183.6
Electricity 10,000 kwh 2279 3295 3420
Diesel t/a 46 51 57 Ignite the boiler
Hydrochloric
acid (31%) t/a 69 77 85 Chemical water treatment
Sodium
hydroxide
(30%)
t/a 65 72 80 Chemical water treatment
Ammonia water
(25%) t/a 1.2 1.4 1.5
Add drug to boiler to improve
pH and reduce pipeline
corrosion
3.5.2 Coal
Botong Thermoelectricity will apply coal produced by Shanxi Datong and be supplied by a
long-term contracted supplier. The fuel will be shipped to Weihai Port by Qinhuangdao and
then be transported by dump trucks. The highway transportation route is Weihai Port, Haibu
Road, Daqing Road, Hong Kong Road, Hainan Road, Huanghai Road, coal yard of plant, with
the distance of 7km.
Statistical data of coal quality is shown in table 3.4-2.
Table 3.4-2 Coal Quality Analysis Data of Current Project
Item Car(%) Har(%) Oar(%) Nar(%) Sar(%) Aar(%) Var(%) Qdw,ar(kJ/kg)
Value 64.28 3.80 9.10 1.20 0.60 20.98 29.32 23208
3.5.3 Limestone
Boilers 1#~3
# of current project apply internal calcium spray desulfuration technology. Boilers
4#~5
# apply external limestone-gypsum desulfuration. The capacity of current limestone
warehouse is 2×500m3; the current project will not provide limestone crushing device. The
finished limestone powder product will be supplied by Yantai Dongyuan Cement Co., Ltd. and
be transported to plant by airtight tank cars and be stored in limestone powder warehouse.
3.5.4 Water consumption
The production water supply and domestic water of Botong Thermoelectricity will be
supplied by Weihai Water Resource Group.
The water intakes of Weihai Water Resource Group are provided with interception nets, fish
treatment and return system, fine interception railings and aquatile filter system to effectively
reduce the collision and absorption of fishes and shells.
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Therefore, the water supply to the proposed project can be guaranteed.
Water balance of Botong Thermoelectricity in 2010 is detailed in figure 3.5-2.
3.5.5 Products
Products of Botong Thermoelectricity from 2008 to 2010 are detailed in table 3.4-3.
Table 3.4-3 Products of Botong Thermoelectricity from 2008 to 2010
Item
Annual output
2008 2009 2010
Heating load (GJ/a) 3055543.79 3255497 4498136
Generated energy (kWh/a) 11531.742 23973.82 16152.72
3 Profile of existing project
Weihai Environmental Protection Research Institute Co., Ltd.
3-15
化
学
处
理
用
水
(274)
(1.1)
主
厂
房
杂
用
水
(2)
除
灰
渣
用
水
喷
洒
杂
用
水(
4)
输
煤
冲
洗
及
除
尘
用
水
锅
炉
(224.7)
(0.8)
(1)
生
活
用
水
空
冷
器
用
水
冷
油
器
用
水
41(0) 蒸发损失
5(0)
风吹损失
3264(510)
2800(6500)
自来水
237(298)
排放
0.8(0.8)
66(21)
外供(49.3)
(50.4)
2(2)
2(2)
3330 (530)
损失
热
用
户
(6500)
热
网
损
失
(21)
排
污
损
失
20
(6479)530
530
(223.6)
博通建材利用
20.8(0.8)
(4)
14.6(19.4)
石膏排出1(2)
10(20)
9(18)
损失炉
外
脱
硫
(3)
煤
场
生活用水 Domestic water
外供 Supply to others
锅炉 Boiler
化学处理用水 Water for chemical treatment
损失 Loss
主厂房杂用水 Water for main power house
损失 Loss
炉外脱硫 External desulfurzation
除灰渣用水 Water for ash and slag handling
喷洒杂用水 Water for sprinkling
输煤冲洗及除尘用水 Water for coal washing and dedusting
煤场 Coal yard
石膏排出 Gypsum drainage
空冷器用水 Water for air cooler
冷油器用水 Water for oil cooler
博通建材利用 Used by Botong Building Materials
热网损失 Heat supply network loss
热用户 Users
自来水 Tap water
蒸发损失 Evaporation loss
风吹损失 Blow loss
排污损失 Drainage loss
Figure 3.5-2 Water Balance of Power Plant (Unit: m3/h, heating period data is indicated in brackets)
4Discharge of Main Pollutants and Measures for Prevention and Control
Weihai Environmental Protection Research Institute Co., Ltd.
4-1
4 Discharge of Main Pollutants and Measures for Prevention and
Control
4.1 Discharge of atmospheric pollutants and measures for prevention and
control
4.1.1 Boiler flue gas
1. Boiler flue gas pollution prevention and control
(1) Before desulfuration improvement of Botong Thermoelectricity, boilers 1#~5
#
apply internal calcium spray desulfuration, with desulfuration efficiency above
50%; three-electric field electrostatic precipitation will be applied for flue gas
produced by boilers 1#~4
#, with dedusting efficiency of 99.4%; four-electric field
electrostatic precipitation will be applied for flue gas produced by boiler 5#, with
dedusting efficiency of 99.8%.
(2) In Dec. 2010, Botong Thermoelectricity built heat supply boiler 6# applying
four-electric field electrostatic precipitator, with the design dedusting efficiency of
99.6 % . Recirculating fluidized bed boiler+limestone-gysum wet method
desulfuration with the efficiency above 90% is applied. The desulfuration system
is able to perform 50% dedusting efficiency. Therefore, the overall dedusting
efficiency of boiler is 99.8%. Meanwhile, Botong Thermoelectricity changed
internal desulfuration of flue gas produced by boilers 4#, 5
# to external
desulfurzation limestone-gysum wet method desulfuration method (in Dec. 2010)
with the design desulfuration efficiency≥90%. After implementing flue gas external
desulfurzation project, the overall dedusting efficiency of boiler 4# is improved to
99.78% and that of boiler 5# is improved to 99.8%.
(3) Flue gas produced by boilers 1#~3
# (3×75t/h) of current project is discharged by
chimney 1# (120m high, internal diameter of outlet of 3.0m). Flue gas produced by
boilers 4#~5
# (2×130t/h), 6
# (1×220t/h) is discharged by chimney 2
# (150m high,
internal diameter of outlet of 5.0m).
(4) The current project installed one flue gas continuous monitoring device
respectively to chimney 1# and chimney 2
# in Nov. 2007 and Mar. 2011. The flue
gas continuous monitoring device for chimney 2#
is undergoing debugging.
Three-electric field dedusting Four-electric field dedusting
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External desulfurzation system Online monitoring
2. Monitoring result of boiler flue gas
The flue gas monitoring data of chimney 1#
of current project is detailed in table 4.1-1. The
monitoring result is detailed in table 4.1-2.
Table 4.1-1 Online Monitoring Statistical Result of Boiler Flue Gas from 2010 to 2011
Monitoring data Online monitoring density of chimney 1
# (mg/m
3)
SO2 Smoke NOX
2008.01 805 119 147
2008.02 1167 134 135
2008.03 1115 148 142
2008.04 195 126 81
2008.05 419 158 90
2008.08 224 75 93
2008.09 481 85 119
2008.10 399 60 111
2008.11 486 51 163
2008.12 624 87 230
2009.01 486 74 203
2009.02 423 81 151
2009.03 610 120 221
2009.04 583 85 246
2009.05 749 91 152
2009.06 598 108 160
2009.07 630 116 164
2009.08 742 100 208
2009.09 388 144 160
2009.10 486 59 210
2009.11 483 44 176
2009.12 372 67 228
Standard value 1200 200 800
2010.01 319 64 199
2010.02 283 59 178
2010.03 274 75 213
2010.04 329 89 244
2010.11 411 67 280
2010.12 414 67 279
Standard value 800 100 400
Note: 1: The first time interval standard of the Emission Standard of Air Pollutants for Thermal Power
Plants (DB37/664-2007) shall apply for boilers 1~3#.
4Discharge of Main Pollutants and Measures for Prevention and Control
Weihai Environmental Protection Research Institute Co., Ltd.
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Table 4.1-2 Online Monitoring Statistical Result of Boiler Flue Gas Pollutants
Monitoring date Boiler Density (mg/m
3)
Smoke SO2 NOX
Oct. 7, 2008
Boilers
1#~3
#
Measured
value 100.11 599 283.9
Standard
value 200 1200 800
Boiler 4#,
boiler 5#
Measured
value 43.3 383.4 253.5
Standard
value 50 400 400
Mar. 13, 2009
Boilers
1#~3
#
Measured
value 73.2 538.3 356.9
Standard
value 200 1200 800
Boiler 4#,
boiler 5#
Measured
value 45.8 390.2 241.4
Standard
value 50 400 400
Dec. 3, 2010
Boilers
1#~3
#
Measured
value 141.2 672.9 267.5
Standard
value 100 800 400
Boiler 4#,
boiler 5#
Measured
value 47.5 118.5 244.5
Standard
value 50 400 400
Boiler 6#
Measured
value 32.34 109.08 400
Standard
value 50 400 400
Note: 1: The first time interval standard of the Emission Standard of Air Pollutants for Thermal Power Plants (DB37/664-2007) shall be applied for exhaust gas discharged by boilers 1~3
#. The second time
interval grade B of the Emission Standard of Air Pollutants for Thermal Power Plants (DB37/664-2007)
shall be applied for exhaust gas discharged by boilers 4~5#. The third time interval standard shall be applied
for boiler 6#.
2: Boiler 6# will be built in Dec. 2012. Its flue gas discharge density shall refer to the Environmental Impact
Report of New Boiler and Desulfuration Project (2010) of Botong Thermoelectricity.
According to table 4.1-1 and table 4.1-2, boilers 1~3# meet the first time interval standard of
the Emission Standard of Air Pollutants for Thermal Power Plants (DB37/664-2007). Boilers
4~5# meet the second time interval grade B of the Emission Standard of Air Pollutants for
Thermal Power Plants (DB37/664-2007). Boiler 6# meets the third time interval standard of
the Emission Standard of Air Pollutants for Thermal Power Plants (DB37/664-2007).
3. Total quantity indicator of atmospheric pollutants
Total flue gas pollutants discharged by boilers of Botong Thermoelectricity from 2008 to 2010
meet total quantity control indicator requirement of Weihai City. See table 4.1-3 for details.
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Table 4.1-3 Total Quantity of Pollutants Discharged by Botong Thermoelectricity from 2008 to
2010 (t/a)
Pollutant SO2 NO2 Smoke
2008 Annual discharge 944.2 697.88 137.7
Total quantity control indicator 2811.43 — —
2009 Annual discharge 1116.65 827.55 163.08
Total quantity control indicator 2811.43 — —
2010 Annual discharge 645.51 948.56 133.7
Total quantity control indicator 2811.43 — —
4.1.2 Dust pollution prevention and control
1. Dust setting measures for fuel storage and transportation system
Strictly control the loading capacity of coal handling trucks, control loading height less than
carriage height and control truck speed, cover the trucks with tarpaulin, follow the specified
route, forbid coal handling trucks to enter the downtown, in order to control the impact of dust
to the surrounding environment, try to lower the fall when loading and unloading coal so as to
reduce dust, apply semi-closed coal yard for coal storage inside plant, in order to eliminate dust;
coal belt conveyor gallery applies closed design; the transfer stations are provided with
waterpower cleaning facilities to eliminate coal dust and prevent the secondary pollution of
coal dust; the transfer stations, coal breakers, etc. with a large fall will be provided with cloth
bag dedusting device with the efficiency above 99% to eliminate coal dust pollution.
2. Measures for the prevention and control of limestone powder dust
Limestone powder will be transported by airtight trucks which can avoid dust to plant and be
delivered to limestone silo through pneumatic force. The top of limestone powder silo is
provided with cloth bag dirt catchers with dedusting efficiency above 99%. The grain size of
collected dust is larger than 10um. Therefore, the dust collection efficiency can be further
guaranteed and improved.
Boiler slag is large and it will not produce dust during the transportation.
3. Measures for the prevention and control of dust produced by ash silo and temporary slag
yard
An ash and slag separation system is applied. The coal powder ash is delivered to the ash silo
of Botong Building Materials by pneumatic force for comprehensive utilization; the airtight
pipeline system can product little dust despite of the fine grain size. Therefore, the impact to
the surrounding environment and sensitive objectives is little.
Monitoring result of dust measured at the boundary of Botong Thermoelectricity in 2009 is
detailed in table 2.2-13.
Table 2.2-13 Monitoring result of dust measured at the boundary (Unit: mg/m3)
Date Time Item East boundary West
boundary
South
boundary
North
boundary
3.10
8:00 TSP 0.191 0.166 0.113 0.115
10:00 TSP 0.130 0.179 0.107 0.189
14:00 TSP 0.243 0.146 0.171 0.142
16:00 TSP 0.189 0.196 0.254 0.168
3.11 8:00 TSP 0.188 0.156 0.195 0.301
4Discharge of Main Pollutants and Measures for Prevention and Control
Weihai Environmental Protection Research Institute Co., Ltd.
4-5
10:00 TSP 0.198 0.176 0.157 0.150
14:00 TSP 0.103 0.169 0.139 0.201
16:00 TSP 0.146 0.149 0.121 0.188
According to the table, the density of dust at each boundary can meet the monitoring
density requirement (1.0mg/m3) of disorganized emission of particulate matters in table 2 of
the Integrated Emission Standard of Air Pollutants (GB16297-1996).
Semi-closed coal yard Coal belt conveyor gallery
Cloth bag dirt catcher at the top of limestone
powder silo
Ash silo of Botong Building Materials
4.1.3 Summary
As a power plant put into production starting from 2001, Botong Thermoelectricity has
continuously improved measures for atmospheric pollution prevention and control, such as
desulfuration facilities improvement, building of wind shielding and dust suppression wall, etc.,
which greatly reduced the discharge of pollutants and meets environmental protection
requirements in pollutant discharge, making contributions to the local environment.
4.2 Wastewater discharge and measures for prevention and control
The wastewater discharged by the current project can be divided into water treatment
wastewater, boiler wastewater, circulating water sewage, domestic sewage, other wastewater,
etc.
The chemical water system applying reverse osmosis and electric desalting produces
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wastewater with high slat content and little organic pollution. Some wastewater is used for
sprinkling, coal handling, etc., while others is used by Botong New Building Materials Co., Ltd.
The circulating tower with high content of suspended matters in circulating water does not
discharge other pollutants directly;
In the desulfuration system, the wastewater flows from gypsum swirler will be pumped to the
wastewater treatment system, where the wastewater will enter the purified water tank after
neutralization, sedimentation, flocculation, condensed purification, etc. Most of the purified
water will be used for recycling. Little waste water will be used by Botong New Building
Materials Co., Ltd. for ash mixing.
The domestic sewage is discharged after being treated by septic-tank. In 2010, the plant
discharged wastewater of 0. 1064 million t/a. The wastewater will flow through urban sewage
pipe network to Weihai Zhongrong Anxin Water Resource Development Co., Ltd. Sewage
Treatment Plant for treatment and discharge.
The quality of wastewater discharged by current project is detailed in table 4.2-1.
Table 4.2-1 Quality of Wastewater Discharged by Current Project
Item PH
SS
(mg/L)
CODCr
(mg/L)
BOD5
(mg/L)
Ammonia
nitrogen
(mg/L)
Sulfide
(mg/L)
Petroleum
(mg/L)
Volatile
phenol
(mg/L)
wastewater 7.30 <20 51 8 1.5 Not
detected
Not
detected
Not
detected
Wastewater
Quality
Standards for
Discharge to
Municipal
Sewers
(CJ343-2010)
GRADE B
6.5~9.5
400 500 350 45 1.0 20 1.0
According to table 4.2-1, the quality of drained water meets the Wastewater Quality Standards
for Discharge to Municipal Sewers (CJ343-2010) GRADE B.
The common supervision and monitoring results of Weihai Zhongrong Anxin Water Resource
Development Co., Ltd. sewage treatment plant from 2008 to 2010 are detailed in table 4.2-2.
According to table 4.2-2, the quality of water discharged by Weihai Zhongrong Anxin Water
Resource Development Co., Ltd. from 2008 to 2010 can meet the Discharge Standard of
Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002) first class B. The
wastewater produced by current project can be accepted steadily.
Table 4.2-2 Common Supervision and Monitoring Results of Weihai Zhongrong Anxin Water
Resource Development Co., Ltd. Sewage Treatment Plant in 2010
Year Indicator COD BOD5 SS pH Petroleum Animal and
plant oil Hexavalent chromium
Ammonia nitrogen
Total arsenic
2008
Measured
value 54 11 17 7.41 0.150 0.09 Not detected 2.82
Not
detected
Standard
value 60 20 20 6~9 3 3 0.05 8 0.1
Indicator Total lead Total
mercury
Total
chromium
Total
cadmium
Anion
biosurfactant Fecal coliform Total nitrogen
Total
phosphorus —
Measured
value
Not
detected
Not
detected Not detected
Not
detected 0.235 7900 16.3 0.23 —
Standard
value 0.1 0.001 0.1 0.01 1 10000 20 1 —
2009
Indicator COD BOD5 SS pH Petroleum Animal and
plant oil
Hexavalent
chromium
Ammonia
nitrogen
Total
arsenic
Measured
value 52 12 15 7.60 Not detected 0.494 Not detected 2.88
Not
detected
Standard 60 20 20 6~9 3 3 0.05 8 0.1
4Discharge of Main Pollutants and Measures for Prevention and Control
Weihai Environmental Protection Research Institute Co., Ltd.
4-7
value
Indicator Total lead Total
mercury
Total
chromium
Total
cadmium
Anion
biosurfactant Fecal coliform Total nitrogen
Total
phosphorus —
Measured value
Not detected
Not detected
Not detected Not
detected 0.169 5400 14.9 0.34 —
Standard value
0.1 0.001 0.1 0.01 1 10000 20 1 —
2010
Indicator COD BOD5 SS pH Petroleum Animal and
plant oil
Hexavalent
chromium
Ammonia
nitrogen
Total
arsenic
Measured
value 49 11 13 7.29 0.360 1.03 Not detected 5.31
Not
detected
Standard value
60 20 20 6~9 3 3 0.05 8 0.1
Indicator Total lead Total
mercury
Total
chromium
Total
cadmium
Anion
biosurfactant Fecal coliform Total nitrogen
Total
phosphorus —
Measured
value
Not
detected
Not
detected Not detected
Not
detected 0.263 6900 15.1 0.30 —
Standard
value 0.1 0.001 0.1 0.01 1 10000 20 1 —
Note: 1: Detection limit: Petroleum 0.02mg/L, hexavalent chromium0.004mg/L, arsenic 0.007mg/L, lead
0.01mg/L, mercury 0.00005mg/L, total chromium 0.004mg/L, cadmium 0.005mg/L;
2: Observe the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918—2002) grade 1 B.
4.3 Noise pollution prevention and control
4.3.1 Noise level at each noise source and measures for prevention and control
Turbine generator, coal breaker, boiler air blower, draught fan, air compressor, cooling tower,
etc. are the noise sources of current project. The noise source intensity is detailed in table 4.3-1.
Table 4.3-1 Noise level of main devices for current project and measures for
prevention and control
Equipment name Noise level
(dB) Treatment measures Position
Boiler body 85 Sound insulation, vibration
attenuation
Turbine generator set 85~90 Add acoustical enclosure Main power
house
Boiler steam exhaust 100 Add steam exhaust
silencer Boiler
Blower 97 Foundation vibration
attenuation and silencer Outdoor
Draught fan 92 Add silencer
Coal breaker 95
Add sound insulating
wallboard and apply single
room arrangement
Main transformer 80
Desulfuration system 95
Sound insulation, vibration
attenuation, noise
reduction
Air compressor 90 Add silencer and apply
single room arrangement
Main power house
Water pump 93~96
Foundation vibration
attenuation, apply single
room arrangement
Cooling tower 83 Apply isolated
arrangement Outdoor
Blowpipe noise 130 Streaming water spray
dilatation silencer
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 4-8
The monitoring result at plant boundary of current project on Mar. 13, 2010 is detailed in table
4.3-2.
Table 4.3-2 Noise monitoring result
Monitoring point Daytime (dB) Night (dB)
1#
northwest corner boundary 56.2 52.7
2#
north boundary 54.0 51.7
3#
east gate 55.3 52.6
4#
southeast boundary 61.4 57.9
5#
south boundary 55.4 52.7
6#
west boundary 58.6 54.4
Grade 3 standard of the Emission
Standard for Industrial Enterprises Noise at
Boundary (GB12348-2008)
65 55
7#
Songjiawa 54.3 42.9
Grade 1 standard of the Emission
Standard for Industrial Enterprises Noise at
Boundary (GB12348-2008)
55 45
According to the monitoring result, the noise source at each boundary except 4#
meets the
Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008) grade 3; the
noise at 4#
exceeding the standard is resulted from the openness of southeast boundary and the
improper maintenance of boiler fans of 4# and 5
#; monitoring point 7
# meets the Environmental
Quality Standard for Noise (GB3096-2008) grade 1; the acoustic environment is good.
In order to solve the noise problem at night at the southeast boundary, Botong
Thermoelectricity installed a hydrodynamic coupling between the fan and the electromotor to
reduce the intake resistance and afforested the inner side of the enclosure at southeast
boundary.
4.3.2 Noise level after treatment measures are applied
Table 4.3-3 indicates the monitoring result of noise. According to the monitoring result, the
measured value at the boundary in daytime and night after Botong Thermoelectricity has
applying the above noise prevention and treatment measures can meet the requirements of the
Standard of Noise at Boundary of Industrial Enterprises (GB12348-90) grade 3.
Table 4.3-3 Noise monitoring result
Monitoring point Daytime (dB) Night (dB)
1#
northwest corner boundary 55.1 51.1
2#
north boundary 53.2 50.6
3#
east gate 53. 5 51.9
4#
southeast boundary 60.8 54.2
5#
south boundary 54.9 52.0
6#
west boundary 57.7 54.1
Grade 3 standard of the Emission
Standard for Industrial Enterprises Noise at
Boundary (GB12348-2008)
65 55
4Discharge of Main Pollutants and Measures for Prevention and Control
Weihai Environmental Protection Research Institute Co., Ltd.
4-9
Generator acoustical enclosure
4.4 Solid waste discharge and measures for prevention and control
The solid waste of current project can be divided into domestic garbage and solid production
waste (ash and desulfurized gypsum).
The slag produced from the burning in hearth will be cooled down by slag cooler and be sent to
slag pool for cooling; the electrostatic dust collected by electrostatic precipitator will be sent to
ash silo by the pneumatic conveying system and be used by Botong New Building Materials
Co., Ltd.
The desulfurized gypsum will be recycled by Botong New Building Materials Co., Ltd. as the
raw material for processing aerated concrete and flyash brick.
The current project produces 76.5t domestic garbage annually, which will be collected to
Weihai Landfill Site.
The solid production waste produced by the power plant from 2008 to 2010 is detailed in table
4.4-1.
Table 4.4-1 Output and Comprehensive Utilization of Ash from 2008 to 2010
Output
Year Gypsum output (10,000 t/a) Ash output (10,000 t/a)
2008 — 6.62
2009 — 7.35
2010 1.05 10.42
According to above analysis, the density of emitted boiler exhaust gas meets the Emission
Standard of Air Pollutants for Thermal Power Plants (DB37/664-2007); the quality of water
discharged by the current project meets the Discharge Standard For Municipal Sewerage
System (CJ343-2010)B and the water will enter Weihai Zhongrong Anxin Water Resource
Development Co., Ltd. Sewage Treatment Plant for treatment; In order to solve the noise
problem at night at the southeast boundary, Botong Thermoelectricity installed a hydrodynamic
coupling between the fan and the electromotor to reduce the intake resistance and afforested
the inner side of the enclosure at southeast boundary. After treatment, the boundary noise can
all meet the Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008)
grade 3. The domestic garbage of current project will be collected to Weihai Landfill Site by
sanitation department. The ash will be used by Botong New Building Materials Co., Ltd.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 4-10
4.5 Analysis of energy conservation potential and improvement plan
4.5.1 Operating temperature of boiler
1. Existing problems
Boilers 1#~4
# and the three matching turbines (1
#~3
#) of Botong Thermoelectricity can meet the
requirements for safe operation under 5.29Mpa, 480℃ . However, they are operating under
5.29Mpa, 450℃ and can not achieve the best energy conservation effect.
2. Improvement plan
The improvement is made to boiler outlet through controlling the flow rate of water with
reduced temperature, increasing the heating area of some superheaters, etc. while not changing
coal type, water cooled wall and air preheater. The particular improvement plan is listed below.
(1) Remove all the outer shields from hearth outlet to economizer;
(2) Remove all the high and low temperature superheater pipelines;
(3) Apply 42*4, 15CrMoG pipe for high temperature section, ∮ 42*4, 20G pipe for
low temperature section; keep the number of pipes unchanged, the number of
header unchanged; do not change header for the original superheater and 2-stage
header for water with reduced temperature; adjust the position of header properly;
the number of beams at the top of boiler shall be increased according to the position
of header;
(4) Increase superheater for high and low temperature section in depth; increase 7%
respectively for low temperature section and high temperature section;
(5) Replace spring hanger for main steam pipeline, thicken the thermal insulation;
(6) Replace low temperature section pipeline, change the exhaust gas side of low
temperature section pipe to enamel while keeping the pipe diameter, quantity,
channel, tube plate unchanged.
4.5.2 Turboset operating performance and efficiency
1. Existing problems
The through-flow for turbosets 1#~3
# of Botong Thermoelectricity was designed according to
the level of 1950s to 1960s. As a result, the actual power performance of turboset falls far
behind the current advanced level. The major factors affecting through-flow are:
1. The blade shaped line is designed by the Soviet Union from 1950s to 1960s, which
features poor pneumatic heating power performance, large profile loss, low
efficiency and poor variable working condition.
2. The distribution of some speed ratios and enthalpy drop is irrational. As a result, the
heating power characteristic parameter deviates from the best value and the
efficiency is low.
3. The meridian plane of through-flow is not smooth. The gallery takes the shape of
step, which causes flow separation easily and increases the loss of through-flow.
4. The rotating blades do not match properly with the static blades. The incoming flow
attach angle of blade is large and it increases the loss of attach angle.
5. The top of rotating blades at some stages is not provided with shroud ring, thus
increasing leakage loss and streaming loss.
6. The application of biserial regulating stages with low efficiency affects the heating
4Discharge of Main Pollutants and Measures for Prevention and Control
Weihai Environmental Protection Research Institute Co., Ltd.
4-11
power performance of unit.
The above factors lead to the intrinsic defects and deficiency of such unit, affect the economic
benefits and cause energy waste.
2. Improvement plan
In order to improve the performance and efficiency of unit, Botong Thermoelectricity will
improve the unit with the following implementation plan after argumentation in different
aspects.
The improvement to the through-flow will replace all the rotating blades and static blades. The
new clapboard and rotor will apply the following advanced technologies:
(1) New generation “loading” efficient static blade with the following features:
① The maximum pneumatic load of blade surface is placed to the rear of blade
grid passageway (traditionally, the maximum pneumatic load of blade surface is
placed to the front).
② Suction surface and pressure surface are composed of high order continuous
smooth curve.
③ The small circle radius of blade front edge is small with a better flow line shape.
The low loss feature of blade grid can be kept when incoming flow direction
(attack angle) changes in a large scope.
④ The small circle radius of blade trailing edge is small and such feature can
reduce trailing edge loss.
⑤ The maximum thickness of blade profile is large and it can strengthen blade
rigidity.
(2) Crankle coupling three-dimensional molding static blade grid.
(3) Regulating stage meridian plane shrinkage.
(4) Shunt static blade grid for big and small blades.
(5) The rotating blades all apply shroud ring whole circle coupling structure to reduce
vibration stress and strengthen blade.
(6) Increase the number of seal tooth to the excircle of rotating blade top to reduce steam
loss.
(7) All the clapboards are changed to welded clapboards. The high welding precision can
guarantee the pneumatic heating power performance of static blade grid, strength
clapboard rigidity and service life.
Another important principle of the improvement plan is to remain the parameters for safe
operation such as rotor weight, thrust behind axle, etc. unchanged to keep the features of axle
unchanged. Meanwhile, the rotating blade whole circle coupling will be applied to greatly
improve the safety of rotating blade. In addition, the rigidity of loaded new blade profile is far
better than that of the original blade. The rigidity of clapboard is also strengthened. Therefore,
the safety of improved unit is far better than that of previous one.
4.5.3 Frequency control speed regulation device for matching fan of boiler
1. Existing problems
Frequency control speed regulation device is not mounted to high pressure motors of nine fans
matching to boilers 4#~6
# of Botong Thermoelectricity.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 4-12
2. Improvement plan
Mount frequency control speed regulation device to high pressure motors of nine fans
matching to boilers 4#~6
# of Botong Thermoelectricity and regulate fan through controlling the
rotate speed of frequency converter.
4.5.4 Effect of energy conservation and emission reduction after improvement
After completing the above improvements by Botong Thermoelectricity, the effect of energy
conservation and emission reduction is detailed in table 4.5-1.
Table 4.5-1 Effect of energy conservation and emission reduction
Item Current project After
improvement
Increase and
decrease
Remarks
Coal (standard coal,
10,000 t/a)
22.94 22.25 -0.69 Standard coal
Limestone (10,000
t/a)
1.18 1.16 -0.02
Water (10,000 m3/a) 183.6 183.6 0
Power consumption
(10,000 kW·h)
3420.00 2835.01 -584.99
SO2 (t/a) 645.51 630.5 -15.01
Smoke (t/a) 133.7 118.7 -17.0
NOX (t/a) 948.56 913.56 -35.0
CO2 (10,000 t/a) 57.19 55.47 -1.72
The improved economic and technical norms are detailed in table 4.5-2.
Table 4.5-2 Improved economic and technical norm
No. Item Unit Qty.
1 Saving of standard coal
per year
t 6930
2 Total investment RMB 10,000 Yuan 1806
3 Fixed assets
investment
RMB 10,000 Yuan 1806
4 Saving of coal cost per
year
RMB 10,000 Yuan 693
5 Increased cost per year RMB 10,000 Yuan 344
6 Increased economic
benefit per year
RMB 10,000 Yuan 349
7 Payback period Year 3.53
8 Financial internal rate
of return
% 26.34
9 Net present value of
investment
RMB 10,000 Yuan 1375
According to table 4.5-1 and table 4.5-2, great economic benefits and environmental benefits
can be obtained after apply three improvement measures regarding boiler operating
temperature, turboset operating performance and efficiency and frequency control speed
regulation device for matching fan of boiler.
5 Environmental Management and Monitoring
Weihai Environmental Protection Research Institute Co., Ltd.
5-1
5 Environmental Management and Monitoring
Environmental management and environmental monitoring are vital for enterprise management.
The establishment and improvement of environmental protection organization, strengthening of
environmental management, environmental monitoring and supervision inside plant and
inclusion of environmental management into production management are very important for
reducing the discharge of pollutants, promoting rational utilization and recycling of resources
and improving economic benefits and environmental benefits.
Botong Thermoelectricity has established a complete environmental management system with
high environmental management level since 1998.
5.1 Environmental management
5.1.1 Environmental management organization
The environmental management of Botong Thermoelectricity will be performed by Weihai
Environmental Management Bureau. Weihai Environmental Management Bureau is
responsible for implementing laws and standards related to environmental protection,
formulating regulations related to environmental management, understanding environmental
situation of project, setting the targets for environmental quality, proposing treatment measures
and reporting to the superior environmental protection department and related departments.
The specific works will be done by Botong Thermoelectricity.
According to environmental protection requirement of power plant, the company has
established an environmental protection team with the general manager as headman and the
production department manager as deputy headman, and members including principals of
related workshops. The office of environmental protection team is arranged in production
technology department. The production department manager is responsible for environmental
management. A technical supervision network will be formed at plant, department and
workshop (team) level. The production technology department is an authority for technical
supervision of environmental management for the whole plant and is responsible for organizing,
implementing and monitoring the daily environmental management. One full-time technical
supervisor for environmental management will be assigned. Each workshop will be provided
with several part-time environmental controllers.
威海市环保局
世行环办
威海博通热电股份有限公司
最高环境管理机构
日常环境管理机构
环境管理执行机构
最高环境管理机构 Higest environmental management organization
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 5-2
日常环境管理机构 Daily environmental management organization
环境管理执行机构 Environmental management organization
威海市环保局 Weihai Environmental Management Bureau
世行环办 Work Bank Environmental Office
威海博通热电股份有限公司 Weihai Botong Thermoelectricity Limited
Liability Company
Figure 5.1-1 Sketch map of environmental management organization
Figure 5.1-2 Sketch map of environmental management organization of Botong
Thermoelectricity
5.1.2 Specific duties and authority
1. General Manager: Top principal for environmental protection, fully responsible for
environmental protection of whole plant, undertake environmental protection tasks for the
superior and the local government, bring environmental protection into objective of term of
service and economic contract and implement the tasks of environmental protection.
2. Production Department Manager: Coordinate the relationship between environmental
protection department, production and construction department, operation and management
department, etc., examine annual plan and long-term plan of environmental protection, decide
technical environmental treatment plan and implementation measures, deal with serious
environmental pollution accident or issue.
3. Production Technology Department: Be responsible for daily environmental management
supervision and management, supervising the operation and monitoring of environmental
protection facilities, controlling the discharge of “waste gas, waste water, industrial residue),
proposing environmental management plan, collecting environmental management data, doing
well in statistics, archiving, reporting environmental management statements to the superior
regularly, turning over drainage charge to the superior, participating in environmental
management design examination, pre-acceptance of environmental management, completion
acceptance, organizing environmental pollution accident investigation and analysis and
Pro
du
ction
techn
olo
gy
dep
artm
ent
Ma
inten
an
ce Dep
artm
ent
Ea
ch p
os
Ma
terials S
up
ply
Dep
artm
ent
Bo
ton
g N
ew B
uild
ing M
ateria
ls Co
., Ltd
.
Op
eratio
n
Dep
artm
ent
General Manager
Production Department Manager
5 Environmental Management and Monitoring
Weihai Environmental Protection Research Institute Co., Ltd.
5-3
environmental quality evaluation, organizing the promotion of advanced experience and
technology for environmental management.
4. Operation Department: Be responsible for burning adjustment, operation examination of
vibration attenuation and noise reduction devices, contacting the maintenance workshop if any
problem is found; be responsible for normal operation of gas desulphurization system,
rationally balancing water consumption, guaranteeing 99% wastewater recycling and
utilization.
5. Maintenance Department: Be responsible for equipment maintenance and ensuring the
safe and stable operation of each device.
6. Materials Supply Department: Be responsible for the supervision, management and
maintenance of coal handling and unloading facilities, establishing related regulations to
eliminate coal pollution; be responsible for fuel transportation, loading and unloading
management, establishing related regulations to eliminate oil pollution; be responsible for
controlling of the coal quality and ensure the ash content and sulphur can meet the
environmental management requirement.
7. Botong New Building Materials Co., Ltd.: Be responsible for the comprehensive
utilization of ash.
5.2 Environmental monitoring
The environmental monitoring of Botong Thermoelectricity will be undertaken by Weihai
Environmental Monitoring Station. Chimneys 1#, 2
# will be mounted with exhaust gas online
monitoring systems.
5.2.1 Exhaust gas online monitoring
Shandong Province is a major province of energy mainly generating electricity with coal. At
present, above 99% of the total generating units with installed capacity of more than 40 million
KW are thermal power generating units. The thermal power generation causes serious sulfur
dioxide pollution while ensuring power supply for economic development and the society.
According to Shandong Provincial Protection Department, each thermal power plant is
required to mount online exhaust gas online monitoring device for assisting exhaust gas
pollution source supervision and management and reducing environmental air pollution. The
online monitoring data will be delivered to the automatic environmental monitoring center as
the basis for environmental management.
Botong Thermoelectricity mounted exhaust gas online monitoring instrument on chimney 1# in
Nov. 2007, exhaust gas online monitoring instrument on chimney 2# in Dec. 2010. The
monitoring is performed strictly following the Specifications for Continuous Emissions
Monitoring of Flue Gas Emitted from Stationary Sources (HJ/T75-2001).
Monitoring instrument: NSA-3080 flue exhaust gas continuous analyzer.
Monitoring method: Non-dispersion infrared spectrophotometry.
5.2.2 Routine monitoring by Weihai Environmental Monitoring Station
Weihai Environmental Management Bureau applies strict online monitoring system. The door
to control room can be opened by two persons each of which holding one key, so as to ensure
the reality and reliability of online monitoring data.
Main monitoring items and frequency
The environmental monitoring plan of Botong Thermoelectricity is detailed in table 5.2-2.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 5-4
Table 5.2-2 Monitoring plan
No.
Enviro
nment
al
factors
Monitoring point Monitoring item Monitoring frequency Client
Entit
y
perfo
rmin
g the
monit
oring,
super
visio
n
Cost
(RM
B
10,00
0
Yuan
/a)
Exhaust gas online monitoring
1 Exhau
st gas
Chimney discharge
outlet SO2, smoke
All-weather
continuous
monitoring
Monitoring
by NSA-3080
flue gas
continuous
analyzer
6
Routine monitoring by Weihai Environmental Monitoring Station
1 Exhau
st gas
Coal boiler flue
outlet SO2, smoke, NO2
4 periods/year, 1
day/period, if boiler
operates normally
Boton
g
Therm
oelectr
icity
Moni
torin
g by
Weih
ai
Envir
onme
ntal
Moni
torin
g
Statio
n,
super
visio
n
by
envir
onme
ntal
mana
geme
nt
burea
u
2
2 Waste
water
Drain outlet of this
project COD, BOD5, NH3-N, sulfide, petroleum, volatile phenol
4 periods/year, 1
day/period 2
Outlet of Weihai
Zhongrong Anxin
Sewage Treatment
Plant
COD, BOD5, SS, pH, petroleum, animal and plant oil, hexavalent chromium, ammonia, total
arsenic, total lead, total mercury, total chromium, total cadmium, anionic surface active
agent, fecal coliform, total nitrogen, total phosphorus
1 period/year, 1
day/period
Routi
ng
monit
oring
date
to be
provi
ded
by
Weih
ai
Envir
onme
ntal
Moni
torin
g
Statio
n
3 Noise 1m outside
boundary Leq
4 periods/season,
1/period respectively
for daytime and night
1
Monitoring by monitoring station inside plant
1 Solid
waste Plant area Solid waste name, output, disposition Count monthly 0.5
5.3 Summary
Botong Thermoelectricity can basically meet the requirements of the Environmental
Management System for environmental management.
1. Botong Thermoelectricity has established a complete environmental management system
starting the commissioning in 2001.
2. Botong Thermoelectricity has established an environmental protection team headed by
the general manager.
3. Weihai Environmental Monitoring Station will regularly monitor the main pollution
sources of Botong Thermoelectricity for understanding the discharge of pollutants.
6 Power Plant Safe Production Management
Weihai Environmental Protection Research Institute Co., Ltd.
6-5
6 Power Plant Safe Production Management
6.1 Safe production management status quo
In order to strengthen safe production management, fully implement Law of the People’s
Republic of China on Work Safety, carefully execute the safety instructions and regulations
issued by the State Electricity Regulatory Commission and the State Administration of Work
Safety, prevent and reduce production accident, ensure the long-term safe and stable operation,
life and property safety, Botong Thermoelectricity has established related management systems
and carried out safe production inspections to continuously improve the safe production
management and reduce safety accident.
6.2 Related safety management system
In order to carefully implement “safety first, prevention crucial” policy, regulate the
supervision work and improve the safe production level, Botong Thermoelectricity fully
implements the safety supervision system and production responsibility system.
In order to strengthen and regulate safe production management, the enterprise has established
strict and detailed safe production management system, such as work order system, operation
order system, regular inspection system, outsourcing project safety management system, etc.,
strengthened the study of the Safe Production Management System, carried out regular
examinations and determined salary according to marks.
The Safe Production Management System has 15 clauses and mainly covers the following: ⑴
safety education management system; ⑵ safety inspection system; ⑶ safe production rewards
and punishment system; ⑷ safety practices, labor protective measures, accident prevention
measures management system; ⑸ safety evaluation management system; ⑹ hazardous
chemicals safety management system; ⑺ low voltage temporary power supply and earth
leakage protective device management system; ⑻ regulations for implementing “two-order”
system; ⑼ specially skilled workers safety management regulation; ⑽ outsourcing projects
safety management regulation; ⑾ accidents (difficulties) investigation, analysis and reporting
regulations; ⑿ special equipment safety management regulation; ⒀ management regulation
for the use of safety equipment; ⒁ management regulation for the use of electric equipment;
⒂ management regulation for safety facilities at production site. The management systems are
detailed in table 6.2-1.
6.3 Implementation of safe production management system
Botong Thermoelectricity carried out “winter inspection activity”, “safe production month”, etc.
in 2010.
These activities summarized problems found out in safe inspection, matters to be further
improved, including the following contents:
⑴ Carefully implement the documents issued by the State Electricity Regulatory
Commission on strengthening equipment management and preventing accident.
⑵ Strengthen hazardous source management.
⑶ Improve emergency management.
⑷ Special instrument management.
⑸ Works regarding peak consumption in summer and prevention of atrocious weather.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 6-6
⑹ Flood prevention and control.
⑺ Follow the principle of “control in four aspects” and strictly implement information
report system.
Problems found in inspection including:
⑴ Some valves and pipeline directions are not marked and they should be marked;
⑵ Along with the operation, the protective devices of phase I project is becoming unstable;
⑵ Workers for some posts can not meet safe production requirements;
⑶ The marks and rails are not recovered after maintenance;
The enterprise is preparing solutions for above problems according to the actual situation.
6.4 Summary
In order to prevent the occurrence of accident, Botong Thermoelectricity has established
effective safe production management systems, prepared an emergency plan and strictly
implemented monitoring alarm measures for timely finding out accident potential, applying
effective countermeasures and ensuring the safety of employees and production.
For the purpose of further avoiding the occurrence of accident and reducing the rate of
equipment failure, it is recommended to further strengthen safety education to the employees,
carry out safe production inspection, prepare detailed improvement measures for existing
problems and implement the measures practically.
6 Power Plant Safe Production Management
Weihai Environmental Protection Research Institute Co., Ltd.
6-7
Table 6.2-1 Summary of safe production management system of Botong Thermoelectricity
No. Item Topic and scope of application Detailed contents
1 Safety education
management system
Specifies safety education
methods, content, examination
management, etc.; applicable
for safety education
management.
① The production staff, production managers
and leaders at all levels must carefully study and
implement various laws and provisions issued by
the state and ministries. ② The safe production
committee of the company must train the
employees regularly in different ways and
organize the examination on the Safety Code of
Electric Power Industry.
2 Safety inspection system
Specifies content and
requirement of safety
inspection, applicable for each
department
① Each department shall organize regular or
irregular special safety inspection and
improvement according to the actual situation
and with the consideration of accident rule. ②
The emphasis of safety inspection lies in the
inspection of problems in safety management,
inspection of leaders, thoughts and
implementation of regulations, equipment
defects, hidden troubles, violation of rules and
disciplines, improvement and implementation.
③ Safety inspection, including joint inspection,
professional inspection and seasonal inspection.
3 Safe production rewards
and punishment system
Specifies rewards and
punishment content for safe
production; applicable for each
department
① The company will implement a safe
production objective management system and
promote the three-level control of safe
production, award the departments and
individuals making great contributions to the
realization of safety objective and punish the
departments and persons responsible for
accidents.② A rewards and punishment system
integrating spiritual encouragement and material
reward, spiritual education and administrative
punishment.
4
Safety practices, labor
protective measures,
accident prevention
measures management
system
Specifies the preparation,
implementation and inspection
of safety and prevention plans;
applicable for production
department and related
departments
Safety and prevention plans are important
measures for proactively carrying out accident
prevention activities, eliminating accidents and
ensuring safe production. The objective of
preparing safety and prevention plans is to
improve the working environment and labor
conditions, ensuring the OHS, preventing
casualties and systematically eliminating
accidents according to plan with emphasis.
5 Safety evaluation
management system
Specifies organization
measures for safety evaluation,
duties, procedure, work
content, improvement of
measures, inspection,
assessment, etc.
① Safety evaluation is an important way for
conducting safety diagnosis, finding out hidden
troubles and hazards; the application of safety
evaluation can help understanding the current
safety level and lay the foundation for safe
production. Safety evaluation is the indication of
“prevention first” in safety management and
changing “afterwards management” to
“beforehand management”. ② In general, safety
evaluation is performed in April and October, of
which the former one will emphasize inspection
and supervision of safety evaluation items and improvements and the latter one will conduct an
all-around evaluation.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
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No. Item Topic and scope of application Detailed contents
6
Hazardous chemicals
safety management
system
Specifies the purchase,
transportation, storage, use,
management, etc. of hazardous
chemicals; applicable for
flammable, poisonous,
hazardous and corrosive
chemicals those may hurt or
damage the personnel,
facilities and environment.
① The works related to hazardous chemicals
must follow the Chemical Dangerous Goods
Safety Management Regulations issued by the
State Council and other regulations. The
emergency plan shall be implemented for
accidents. ② The serious hazardous sources of
hazardous chemicals must be monitored and
periodically evaluated to eliminate hidden
troubles and apply effective measures to prevent
serious accidents. ③ Specify the requirements
on workers and transportation staff related to the
handling of hazardous chemicals. ④ Specify the
storage and use requirements of hazardous
chemicals. ○5 Apply automatic burning and
safety control measures; correctly maintain the
safety control devices of boilers; observe the
regulations on starting and stopping vehicles to
maximize the explosion risk of suspending high
temperature particles during driving (for
instance, particles inside coal grinder, coal mill
and cyclone separator); regularly clean worship
to prevent coal dust accumulation (on the
ground, breast board, crossbeam and equipment
surface); spread to cool down the
high-temperature region of coal pile (resulted
from spontaneous combustion), do not send high
temperature coal into coal dust fuel system; use
thermodetector or carbon monoxide sensor, etc.
to monitor solid fuel storage area, timely find out
fire disaster incurred from spontaneous
combustion and identify high risks.
7
Low voltage temporary
power supply and earth
leakage protective device
management system
Further strengthen and
improve safe production
equipment management,
improve the safety protection
awareness, prevent electric
shock and fire disaster;
applicable for all the staff in
production and non-production
area.
① The work applying low voltage temporary
power supply must comply with the conditions
of the system. ② Power and lighting distribution
cabinet must comply with the conditions of the
system. ③ The earth leakage protective device is
used for preventing electric shock and ensuring
personal safety. Therefore, the low voltage
power equipment must be mounted with earth
leakage protective device and strictly follow
corresponding regulations. ④ Provide warning
lamps in enclosed site of power equipment;
workers entering enclosed site of power
equipment must using voltage sensors; when
working on or nearby electric equipment and
transmission lines, the electricity must be cut off
or the equipment must be properly grounded
according to laws and operation regulations; the
workers working on or nearby exposed power
circuit must be trained particularly covering
basic theory, safe operation regulations,
awareness of danger and identification, proper
use of personal protective equipment, correct locking/hanging of plates, emergency (including
heart-lung recovery), correct rescue procedure
and regular training.
6 Power Plant Safe Production Management
Weihai Environmental Protection Research Institute Co., Ltd.
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No. Item Topic and scope of application Detailed contents
8
Regulations for
implementing
“two-order” system
Each department must
implement “two-order” system
in order to ensure safe
production, prevent accident,
eliminate defects, and perform
maintenance and installation.
① The Production Technology Management
Department is responsible for managing work
orders and related safety systems. The Operation
Management Department is responsible for
implementing operation order and managing
related safety systems. The workshop is
responsible for implementing “two orders”. The
principals in charge of Operation Management
Department and workshop operation are liable
for implementing the operation order system and
statistics; the principals in charge of Production
Technology Management Department and
maintenance are liable for implementing the
work order system and statistics, the Safety
Supervision Department is responsible for
supervision and assessing the implementation of
“two orders”. ② Leaders at all levels shall
strictly implement the “two orders” and
authentically report the failures caused by “two
orders”. The problems shall be carefully
analyzed despite of the nature and result and be
controlled in “four aspects”.
9
Specially skilled workers
safety management
regulation
Specifies the scope of
specially skilled workers,
matters related to evidence
taking, reexamination,
training, etc.; applicable for
boiler pressure vessel
operation, electrician, hoisting,
welders, motor vehicle
driving, erection at height,
water treatment workers,
refrigeration workers, etc.
① Special works refer to those may cause
casualties easily and lead to serious damages to
the operators, others and the surrounding
facilities. The workers involving in special
works are called as specially skilled workers.②
The specially skilled workers must strictly
observe the national regulations and operational
procedure of special equipment. The workshop is
responsible for managing the specially skilled
workers. The Personnel Department is
responsible for training. The Safety Supervision
Department is responsible for supervision. All
the specially skilled workers must be certified
(with Special Work Certificate). The
qualification of specially skilled workers must be
reviewed twice a year.
10
Outsourcing projects
safety management
regulation
Specifies the safety
management regulations for
outsourcing projects;
applicable for all the
outsourcing projects.
① Do not subcontract outsourcing projects
instead of management; the principal at each
level is totally responsible for safe production
and the safety affairs of outsourcing projects. ②
The Safety Supervision Department is
responsible for production management and is
responsible for safety management of
outsourcing projects. ③ Examine the
qualification of contractors of outsourcing
projects. ④ Assess the safety of outsourcing
projects. ⑤ Assess the contract awarding
department or equipment owners and project
principals for safety.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
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No. Item Topic and scope of application Detailed contents
11
Accidents (difficulties)
investigation, analysis and
reporting regulations
Specifies the preparation of
accidents (difficulties)
investigation, analysis and
reporting regulations, and
ways for accidents
(difficulties) investigation,
analysis and reporting;
applicable for each production
department and related
departments.
① Accidents (difficulties) investigation, analysis
and reporting are vital for observing the principle
of “control in four aspects”, careful
investigation of accidents, drawing lessons from
accidents, carrying out activities for accident
prevention, eliminating hidden troubles those
may hurt the people or damage equipment, and
ensuring safe production. ② The objective of
preparing accidents (difficulties) investigation,
analysis and reporting is to find out the causes of
accidents, emphasize prevention, improve the
working environment and labor condition, ensure
the safety and health of employees, prevent
personal casualties and eliminate accident
systematically as scheduled and with emphasis.
③ The accidents (difficulties) investigation,
analysis and reporting shall follow the Code of
Investigation for the Electric Power Production
Accidents DL558-94 issued by the Ministry of
Power Industry, the State Interim Provisions on
Investigation Procedure of Serious Accidents,
technical regulations on power industry issued
by the superior, working regulations on power
safety, directions for accident prevention and
safe production bulletins.
12 Special equipment safety
management regulation
Specifies the purchase,
installation, use and checking
(inspection), maintenance, etc.
of special equipment;
applicable for boilers, pressure
vessels, pressure pipelines,
hoisting equipment, motor
vehicles inside plant, etc.
① Special equipment include boilers, pressure
vessels, pressure pipelines, hoisting equipment,
motor vehicles inside plant which may endanger
people’s life. The hoisting equipment will be
checked twice a year. The special equipment not
checked is not allowed to be used. The safety
accessories of special equipment must be
checked regularly. ② The use of special
equipment must strictly follow the Safe
Production Law and the Regulations on Safety Supervision for Special Equipment. A perfect
management system and a responsibility system
must be available. The operators must be
certified. The accident must be reported to the
Safety Supervision Department timely and be
handled according to the emergency plan. ③ The
workshop with special equipment or teams
working with special equipment must be
provided with full-time or part-time managers. In
addition, safety documents of special equipment
shall be archived. ④ Ventilation measures shall
be applied for the working area to reduce
temperature and humidity. ⑤ Shorten the
working time in high temperature environment,
ensure drinking water supply. ⑥ The surface
closely contacting high temperature equipment
shall be protected, including generating
equipment, pipeline, etc. ⑦ Warning signs shall
be available nearby the high temperature surface.
Proper personal protective equipment including
heat insulating gloves and shoes, etc.
6 Power Plant Safe Production Management
Weihai Environmental Protection Research Institute Co., Ltd.
6-11
No. Item Topic and scope of application Detailed contents
13
Management regulation
for the use of safety
equipment
Specifies the purchase, use,checking, maintenance, etc. of
safety devices; applicable for
safety helmets, shock-proof
devices, fall-proof devices,
climbing tools, earth leakage
protective devices, high
voltage electroscopes,
grounding wires, etc.
① The purchase, use and discarding as useless
of safety devices must be reported to the Safety
Supervision Department for approval. ② The
workshops and working teams must archive the
safety devices, check, test regularly according to
regulations, and archive the test results and use
records. ③ The safety devices (shock-proof
devices, fall-proof devices, climbing tools,
insulating tools, etc.) must be checked and tested
regularly. ④ The safety helmets must be
selectively checked annually within the specified
term.
14
Management regulation
for the use of electric
devices
Specifies the purchase, use,
checking, maintenance,
management, etc. of electric
devices; applicable for
hand-held electric devices,
mobile electric devices, etc.
① The electric devices must be provided with
corresponding earth leakage protective device,
isolation transformer and protective facility. ②
All power boxes, temporary power supplies,
temporary sockets or temporary low voltage
electric devices, test instruments, hand-held
electric devices, etc. must be earth leakage
protective. ③ The electric devices can be
checked by high voltage working team with
electrical workshop semiannually. ④ The
electric devices shall be managed by the
workshop and the working team.
15
Management regulation
for safety facilities at
production site
Specifies the use,
maintenance, checking,
governing, etc. of safety
facilities; applicable for
gridding boards, handrails,
guard boards, stairs, platforms,
passageways, etc.
① The safety facilities must be kept compete
and mounted firmly while meeting the safety
requirements. The operators are responsible for
daily examination. The maintenance staffs are
responsible for periodical examination, daily
maintenance and replacement. The unusual
situations must be notified to the maintenance
staffs. ② When dismantling and changing the
safety facilities temporarily, temporary fences
and warning signs shall be provided and some
persons shall be assigned to wait here. The
facilities shall be recovered at the end of work.
③ The erection of temporary facilities and
drilling on structures must be approved in
advance.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 6-12
No. Item Topic and scope of application Detailed contents
16 Traffic safety
management regulation
Specifies that all the staff must
follow traffic rules when
heading to and leaving the
workplace and operating
equipment on free roads or
public roads. The safety
measures for controlling traffic
casualty shall protect project
workers and road users,
including easily injured
persons.
① Emphasize the training to drivers on safety
rules; � improve driving technology; all the
drivers must be certified; restrict driving time
and arrange shifts to avoid fatigue;
② Avoid dangerous roads and prevent driving in
dangerous time to reduce the possibility of
accident;
③ Mount speed control devices (speed
controllers) on trucks and perform remote
supervision of drivers; maintain trucks regularly
and use approved parts to avoid equipment
failure and serious accident.
④ Try to prevent the use of road simultaneously
by pedestrians and construction vehicles;
cooperate with the local communities and
authority in charge to improve road sign and
visibility, and further improve the overall safety,
in particular the roads nearby schools and
playgrounds of children. Perform traffic
education and safety education together with the
local community (such as carrying out publicity
campaign at schools);
⑤ Cooperate with emergency processing staff to
ensure timely first aid;
⑥ Try to purchase materials from the local
market to shorten the transportation distance,
build related facilities (employee dorms) nearby
the project site, and transport workers with buses
to reduce traffic flow; apply traffic safety control
measures and warn workers and vehicles through
road signs and signalmen.
7 Profile of Occupational Health
Weihai Environmental Protection Research Institute Co., Ltd.
7-1
7 Profile of Occupational Health
7.1 Occupational disease prevention and control
Botong Thermoelectricity has established a safety network covering the whole company
following the Law of the Peoples Republic of China on Prevention and Control of
Occupational Diseases in order to prevent, control and eliminate occupational disease, do well
in occupational disease prevention and control, protect the health and lawful rights of labors
and promote the harmonious development of society; the Personnel Department is responsible
for labor safety and occupational health management. In addition, with the supervision of labor
union, the company has established a perfect labor safety and occupational health management
system. The daily poisoning prevention, dust, chemical injury will be entrusted to local
environmental protection monitoring station.
7.2 Measures for occupational disease prevention and control
Dust, noise and ionizing radiation are major occupational hazards of power plant.
(1) Dust
Dust hazard exists in coal handling, storage, supply, grinding and ash disposal system. At
present, following measures are mainly applied for dust prevention:
① The chute of coal handling system with a large fall shall be mounted with airlock
baffle plate. The coal guiding and acceptance trough at coal dropping point shall be
lengthened. In order to prevent coal dropping and for the convenience of recycling,
the distance between material dropping point and rotary drum at the end shall be
enlarged and the end of coal guiding trough shall be provided with cover plate for
accepting coal.
② The height between rotary drum and ground shall be enlarged. A coal wiper will be
mounted for cleaning the coal dust adhered to non-working surface of belt. These
measures are favorable for cleaning coal dust and preventing the dropping of coal
dust.
③ Independent sprinkling and dust prevention devices shall be available at coal yard
and be used for sprinkling coal pile in non-freezing season to prevent coal dust
dispersion, environmental pollution and reduce coal loss.
④ Workers must wear dust masks, dustproof work clothes, gloves, etc.
(2) Noise
Various fans, water pumps, coal crushing machineries, turbine generator sets, boilers, etc. are
noise sources of a thermal power plant. Presently, following measures are adopted for noise
prevention:
① Mount silencers to boiler steam discharge pipe, reheater ignition steam discharge
pipe, main steam safety valve steam discharge pipe, reheater outlet safety valve,
forced draught blower, etc.
② Mount sound-proof housing to coal mill, provide sound-proof housing to exciter
carbon brush; thermal insulation material wrapped at turbine head can be used for
sound insulation; silencers will be mounted to indoor air conditioners; sound
insulation compartments shall be provided to coal mill, high pressure water supply
pump, air compressor, etc.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
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③ Provide sound insulation control rooms with noise less than 60 dBA; apply
sound-absorptive decorative materials.
④ Follow related occupational noise regulations in designing the generator;
⑤ Identify and divide high noise zones; wear personal noise protective equipment when
working in high noise zones (area with noise above 85dB).
(3) Ionizing radiation
The workers in a power plant will have to get close to generators, power distribution and
transformation equipment, high voltage transmission lines. Therefore, the contact is
electromagnetic field is more frequently than common persons. An electromagnetic safety
system comprising following contents shall be established to prevent or minimize the
occupational contact to electromagnetic field. Presently, the measures applied for ionizing
radiation prevention and control include:
① Identify the potential contact at workplace, including the measurement of contact
objective, use of personal monitoring equipment during working;
② Train the workers for identifying occupational electromagnetic field contract and
hazard;
③ Divide safety area, identify area exceeding the public contact standard and area not
exceeding the standard; only the trained staff is allowed to enter the area exceeding
standard;
④ Apply implement plans if the contact may or has gone beyond the standard of
ICNIRP, IEEE, etc.
⑤ The set warning value of personal electromagnetic contact monitoring equipment
shall be lower than the reference limit of occupational contact (for instance, 50% of
the reference limit. The improvement plan may include: Arrange shifts for working,
restrict contact time, increase the distance between electromagnetic radiation source
and workers, or apply electromagnetic shielding materials.
(4) Field rescue for occupational disease
The patient burnt by chemical substances shall be immediately cleaned with clean water on site.
The sunstroke patient shall be moved to a ventilating place, rub down with cold water, fed with
cold drink containing salt. Meanwhile, invite medical personnel or send the patient to hospital.
7.3 Outlay for occupational disease prevention and control
The annual outlay of Botong Thermoelectricity for occupational disease prevention and control
is about RMB 0.35 million Yuan, including:
⑴ RMB 0.2 million Yuan for labor protection.
⑵ RMB 0.1 million Yuan for physical examination (once a year).
⑶ RMB 50,000 Yuan for protective equipment and facilities.
7.4 Implementation of occupational health prevention and control
After years of efforts, Botong Thermoelectricity meets various prevailing regulations and
standards for labor safety and industrial sanitation. At present, no person has suffered from
occupational disease.
7 Profile of Occupational Health
Weihai Environmental Protection Research Institute Co., Ltd.
7-3
7.5 Summary
Botong Thermoelectricity has proactively applied various prevention measures and done a lot
in regulated management, engineering control, employee training, medical supervision,
personal protective utilities, dust monitoring, etc. considering the features of power plant,
various unsafe, unsanitary factors in production process, and thus effectively ensuring the
safety and health.
8Risks and Measures for Prevention and Control
Weihai Environmental Protection Research Institute Co., Ltd.
8-1
8 Risks and Measures for Prevention and Control
8.1 Physical risk identification
The hazardous substnaces to be used in this project include diesel, ammonia water,sodium
hydroxide, muriatic acid, whose phasycial paramters and emergency treatment mehtods are
detailed in table 8.1-1~ table 8.1-4.
Table 8.1-1 Physical paramters and emergency treatment mehtods of diesel
Physical and
chemical
properties
It is a mixture mainly comprising alkanes, alkenes, cycloalkanes, aromatic hydrocarbons,
polycyclic aromatic hydrocarbons, a small amount of sulfur (2~60g/kg), nitrogen
(<1g/kg) and additive. It is slightly sticky brown liquid with melting point of -18℃ ,
boiling point of 282~338℃ , relative density of (water=1) 0.87~0.9, flashing point of
38℃ , ignition temperature of 257℃ . It is used as the fuel for diesel engine.
Flammable, irritant; the contact with open fire, high temperature or oxidant may lead to
burning and explosion. The high temperature may increase the pressure inside vessel and
lead to cracking and explosion.
Toxicological
data and
environmental
behavior
Skin contact is the major way of absorption, which may lead to acute kidney damage.
Diesel may lead to contact dermatitis or oily acne. The absorption of fog drop or liquid
may lead to aspiration pneumonia. It can enter into fetal blood through placenta. Diesel
exhaust gas may irritate eyes, nose and cause swirl and headache.
Table 8.1-1 Physical paramters and emergency treatment mehtods of ammonia water
Physical and
chemical
properties
Colorless transparent liquid with strong irritant stink; relative density of (water=1) 0.91.
Dissolve in water, alcohol, used in pharmacy industry, gauze cover industry,
photoprinting, fertilizer, etc.
Toxicological
data and
environmental
behavior
Decompose to release ammonia, the decomposing speed increases along with the increase
of temperature, explosive atmosphere can be formed, the vessel under high temperature
may crack and explode, burning (decomposing) output: ammonia.
The absorption of ammonia water into nose, throat and lung may lead to couth, short
breath, asthma, etc.; death by suffocation may be caused by throat edema; pulmonary
edema will be caused and lead to death. The ammonia water splashing into eyes may
cause serious damage and even bind; skin contact may lead to burning.
Emergency
treatment
methods
(1) Leakage emergency treatment
Evacuate the personnel in leakage area to safe places, forbid irrelevant personnel to enter
the polluted area; the emergency treatment staff shall wear self-contained respirator and
chemical protective cloths. Do not contact leaked chemicals directly, block the leakage
when ensuring safety. Wash with massive water and discharge the diluted water into
waste water system. Absorb with sandy soil, vermiculite or other inert materials, then add
few to massive water and adjust to neutral before discharging into wastewater system. The
leakage of huge quantity shall be enclosed with diking and then collected, transferred,
recycled or treated before abandoning.
(2) Protective measures
Respiratory system protection: Wear gas mask if the steam may be contacted. Wear
self-contained respirator at emergency rescue or escape.
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Eye protection: Wear chemical safety protective glasses. Protective clothes: work clothes.
Hand protection: Wear chemical resistance gloves.
Others: Forbid smoking, eating and drinking at workplace. Take a shower and change
clothes after working, keep good health habits.
(3) Emergency measures
Skin contact: Immediate wash with water for at least 15min. Go to hospital if burnt.
Eye contact: Life eyelid, wash at least 15min with flowing clean water or normal saline,
or wash with 3% boric acid, go to hospital immediately.
Inhalation: Immediately leave the site and go to a place with fresh air, keep the respiratory
tract smooth, perform oxygen therapy if difficult in breathing, conduct artificial
respiration if the breathing stops, then send to the hospital.
Ingestion: Immediate rinse the mouth, take dilute vinegar or lemon juice, go to hospital.
Fire extinction: Vaporific water, carbon dixodie, sandy soil.
Table 8.1-3 Physical paramters and emergency treatment mehtods of sodium hydroxide
Marks Molecular formula: NaOH, Chinese standard No.: 82001, molecular weight 40.01; danger
mark: 20 (alkaline corrosive)
Physical and
chemical
properties
Appearance and character: White opaque solid, easily air slaking
Toxicological
data and
environmental
behavior
Acute toxicity: LD504820mg/kg (rat per os)
Hazardous features: This product will not burn. It releases massive heat when meeting
water and steam and forms corrosive solution. Then, it neutralizes with acid and release
heat. This product is strongly corrosive.
Burning (decomposition product): Hazardous toxic smog may be produced.
Emergency
treatment
methods
1 Leakage emergency treatment
Isolate and set warming signs around the polluted area; the emergency treatment staff
shall wear respirator and chemical protective cloths. Do not contact leaked chemicals
directly, collect into dry and clean vessel with cover with a clean shovel, add few to
massive water and adjust to neutral before discharging into wastewater system. The
leakage of huge quantity shall be collected, recycled or treated before abandoning.
2 Protective measures
Respiratory system protection: Wear gas mask if necessary.
Eye protection: Wear chemical safety protective glasses.
Protective clothes: Work clothes (made of anticorrosie materials)
Hand protection: Wear rubber gloves.
Others: Take a shower and change clothes after working, keep good health habits.
3. Emergency measures
Skin contact: Immediate wash with water for at least 15min. Go to hospital if burnt.
Eye contact: Life eyelid, wash at least 15min with flowing clean water or normal saline, or
wash with 3% boric acid, go to hospital immediately.
Inhalation: Immediately leave the site and go to a place with fresh air, perform oxygen
therapy if difficult in breathing, conduct artificial respiration if necessary, then send to the
hospital.
8Risks and Measures for Prevention and Control
Weihai Environmental Protection Research Institute Co., Ltd.
8-3
Ingestion: Immediate rinse the mouth, take dilute vinegar or lemon juice, go to hospital.
Fire extinction: Vaporific water, sandy soil.
Table 8.1-4 Physical paramters and emergency treatment mehtods of muriatic acid
Marks Molecular formula: HCL, Chinese standard No.: 81013, molecular weight 36.46; danger
mark: 20 (acid corrosive)
Physical and
chemical
properties
Appearance and character: White or slightly yellow fuming liquid, with pungent acidity
Toxicological
data and
environmental
behavior
Acute toxicity: LD50900mg/kg (rabbit per os); LC503124ppm, 1h (rat inhalation)
Hazardous features: This product can reacts with some active metal powders and releases
hydrogen. Virulent hydrogen cyanide gas can be produced when meeting cyanide.
Neutralization reaction happens when meeting alkalin, during which process massive heat
can be released. This product is strongly corrosive.
Burning (decomposition product): Hydrogen chloride
Emergency
treatment
methods
I. Leakage emergency treatment
Evacuate the personnel in leakage area to safe places, forbid irrelevant personnel to enter
the polluted area; the emergency treatment staff shall wear self-contained respirator and
chemical protective cloths. Do not contact leaked chemicals directly. Do not sprinkle
water to the leakage. Do not allow water to enter the packed vessel. Mix with sandy soil,
dry limestone or soda ash and then collect the waste disposal site. Wash with massive
water and discharge the diluted water into waste water system. The leakage of huge
quantity shall be enclosed with diking and then collected, transferred, recycled or treated
before abandoning.
2 Protective measures
Respiratory system protection: Wear gas mask or air supply helmet if contacting the steam
or smog. Wear self-contained respirator at emergency rescue or escape.
Eye protection: Wear chemical safety protective glasses.
Protective clothes: Work clothes (made of anticorrosie materials)
Hand protection: Wear rubber gloves.
Others: Take a shower and change clothes after working, place the polluted clothes
independently, keep good health habits.
3. Emergency measures
Skin contact: Immediate wash with water for at least 15min or wash with 2% sodium
bicarbonate solution. Go to hospital if burnt.
Eye contact: Life eyelid, wash at least 10min with flowing clean water or 2% sodium
bicarbonate solution.
Inhalation: Immediately leave the site and go to a place with fresh air, keep the respiratory
tract smooth, perform oxygen therapy if difficult in breathing, inhale 2-4% atomized
sodium bicarbonate solution, then send to the hospital.
Ingestion: Immediate rinse the mouth, drink milk, egg while, plant oil, etc., do not urge
the emesis, immediately go to hospital.
Fire extinction: Vaporific water, sandy soil.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
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8.2 Equipment and production equipment hazard analysis
(1) Pressure equpiment
The equipment boilers, turbines, etc. involved in power generation and heat supply devices are
usually pressure vessles and pipelines. Under following conditions such as design,
manufacturing defects, strengthen reduciton due to fatigue or corrosion, improper operation
and operation against rules which leading to over temperature, over pressure, reduced ductility
of pressure vessel of reactor due to long term high temperature and high pressure operation,
creepage failure, the pressure equipment suffering stress higher than the bearing capacity may
lead to vessle expolision, casulties, equipment damage and environmental pollution.
(2) Heat exchanger
Under high temperature, pressure and affected by heating exchanging medieum, the joint
between tube nest and tube plate may easily leak. The pipewall may become thin due to
medium flushing, which lead to internal leakage of heat exchanger. The medium leaked into
circulating water system may cause fire and explosion.
(3) Pumps
① If the exposed operating parts of mechanical rotating equpiment such as fans, pumps
involved in production process are not provided with protective covers or the
protective covers are damaged, or the maintenance, inspection violate the rules, or
the electricity is not cut off or the equipment is started accidently due to improper
supervision, the operating parts may cause mechanical injury; if the workers do not
wear protective articles, the operating parts may also cause mechanical injury.
② The improper sealing of pump transmitting flammable liquid and the connecting
pipelines, valves, flanges, pressure gauge nozzles, etc. or flushing corrosion may lead
to the leakage of flammable liquid and thus causing fire.
③ Machines and pumps are major noise sources those may damage the operators. The
noise may affect the hearing capacity and even deaf, or lead to neurasthenia,
cardiovascular disease, alimentary system disease, etc. In addition, the noise may
influence information communication and affect safe production. The operating
pumps are noise sources those may cause diseases to people.
(3) Electric equipment
① The overloading or short circuit of transformer, oil leakage of transformer may lead
to a fire disaster; transformer failure may cause power cut.
② The electric equipment not grounded properly, the damaged insulation, the damaged
power transmission and distribution line, improper supervision of electrical works, or
operation againest rules, etc. may cause electric shock.
③ The damage to protective lead sheath of power cable or the damage to insulation,
long-term overload operation of cable, loose crimping of joint in the middle of cable
junction box, improper welding or selection of joint materials, wet cable terminal,
improper insulation treatment of outgoing line or too short distance, external fire and
heat source may lead to a fire.
④ The operation of entire production system is ensured by electricity. The sudden
failure of electricity may stop the operation of all machines and pumps, cause
irregular reaction and stop, over pressure or leakage of flammable materials and thus
resulting a fire or explosion.
(4) Troubleshooting
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① When inert replacement is not performed properly during troubleshooting of
equipment and pipeline, or the machine is started against rules, the mixed gases may
explode.
② Troubleshooting tools, accessories, etc. not properly used or not firmly placed may
lead to strike injury.
③ The equipment platform or ladder without guardrail and anti-skidding step, or the
platform, guardrail, ladder and anti-skidding step are corroded, fall accident may be
caused.
④ The vehicles transporting auxiliary materials may be damaged due to failure, driving
against rules or improper operation, etc.; motor vehicles without flash hider may
cause a fire or explosion when entering dangerous areas.
8.3 Human factors, management factors and external environmental factors
(1) Human factors
According to the statistics and analysis of accidents, most of the accidents are caused by human
factors. The fatigue and wrong operation caused by long-term overload working, disease or
drunken operation and direction, involvement in taboo works, mental abnormality, intentional
mistake or identification defect may lead to accidents.
(2) Management defects
No corresponding administration organization is established or the organization is not set
rationally; the management systems are not complete or the management measures are not
implemented; the production staff have no rule to follow and they act recklessly; no system of
rewards and penalties is available; the workers are not enthusiastic and active; the routine
inspection is not timely and not careful; the handover is not clear; no perfect safety operation
regulations are prepared; no training system is available; the operators are not trained in three
levels and on skills; the workers not trained are allowed to work and they can not make
judgments correctly; the safety problems are not emphasized and the problems are not solved
timely; the supervision and inspection systems are not implemented strictly; wrong direction or
even direction against rules; no replacement plan or maintenance system for equipment and
facilities; the troubleshooting system is not strict enough to find out problems. The
management defects may lead to accidents. The major principal and other safety managers not
trained may not able to prevent accident. What is more, the accident may become worse.
(3) Working environment, temperature impact
The project is located in an area with distinct four seasons, where is cold in winter and hot in
summer. If no anti-freezing measure is applied properly in winter, the water supply system may
block or broken. The freezing of fire water system will affect fire extinguishing and worsen the
fire accident. In summer, the volatilization of flammable liquid may be facilitated due to the
high temperature and thus increasing the danger of fire disaster. In addition, the high
temperature may cause sunstroke or wrong operation.
Insufficient light at workplace may cause visual fatigue, wrong operation and accident.
8.4 Identification of fire, explosion hazards
The diesel and other flammables in power plant are explosive. The enterprise shall apply
various safety measures to prevent accidents. For instance: ① Prepare perfect regulations and
operation procedures according to the state, ministerial and industrial standards; ② Mount
flammable gas alarming device in working area; ③ Provide water supply system and fire
equipment for fire fighting.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
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8.5 Toxicity identification
The toxicity will be determined according to the Occupational Exposure Limit for Hazardous
Agents in the Workplace (GBZ2-2002). See table 8.1-5 for details.
Table 8.1-5 Evaluation standards of main toxic substances (mg/m3)
No. Item Evaluation standard Remarks
1 Muriatic acid 7.8 Max. allowable density
2 Sodium hydroxide 2 Max. allowable density
The hazard indicator will be determined according to the following formula:
Hi=Qi/C0i
Wherein:Hi-hazard indicator of toxic substance i;
Qi-processing or storage quantity (kg) of substance i, see table 8.1-6 for details;
C0i-allowable density of substance i (mg/m3).
Table 8.1-6 Storage and transportation quantity of main toxic substances
No. Toxic pollutants Storage and transportation quantity (t/a)
1 Muriatic acid 15
2 Sodium hydroxide 15
The hazard indictors of major substances for the project are detailed in table 5-9.
Table 5-9 Hazard indictors of major substances
No. Toxic pollutants Hazard indicator Hi
1 muriatic acid 1.9×103
2 sodium hydroxide 7.5×105
According to the above table, sodium is the primary and muriatic acid is the secondary toxic
materials in production process of Botong Thermoelectricity.
8.6 Product device risk identification
The risks of boiler device, turbine device, distribution system, chemical water device not
considering any other safety measures are high. The enterprise shall strictly follow the national
laws, regulations and standards in equipment design, manufacturing, installation, acceptance
and use, strengthen explosion proof design, process control, interlocking device and safety
operation procedure, arrange the separation space strictly, implement measures for emergency
treatment, alarming, etc., prepare scientific and detailed emergency plan, train the operators
regularly, organize periodical emergency rescue rehearsal in order to prevent the occurrence of
serious accident.
8.7 Summary
Coal and water are raw materials for Botong Thermoelectricity. The production involves diesel,
ammonia water, sodium hydroxide, muriatic acid, etc. Due to the little quantity, the toxic effect,
fire and explosion risk are not apparent if preventive measures are applied.
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Each boiler, turbine, chemical water devices, etc. are highly risky. The operation against rules,
insufficient safety awareness, etc. are major factors causing accidents. During the production
process, the equipment shall be well maintained and repaired and the safety protection of key
parts and alarming measures shall be emphasized for finding out hidden troubles and applying
timely and effective measures to prevent accidents.
9 Emergency Plan
Weihai Environmental Protection Research Institute Co., Ltd.
9-1
9 Emergency Plan
9.1 Power plant emergency plan preparation
Botong Thermoelectricity has organized related production departments in preparing the
environmental emergency plan. The Production Technology Department is responsible for
auditing, amendment and coordination.
9.2 Power plant emergency plan overview
The emergency plan is divided into serious production accident plan and environmental
emergency plan.
9.2.1 Comprehensive emergency rescue plan for serious production accident
⑴ Preparation objective and function: Effectively control the occurrence and development
of emergency event, try to reduce the threat of accident to human and equipment, reduce the
loss to the minimum.
⑵ Preparation basis: Safety Production Law, Regulations on the Control over Safety of
Dangerous Chemicals, Temporary Provisions for the Prevention of Serious and Extremely
Serious Safety Accident and Emergency Treatment, 25 Important Requirements on the
Prevention of Serious Power Accident, Safe Power Working Regulation, Guide Rule for the
Preparation of Emergency Plan for Safe Production Accident of Production and Operation
Entities, etc.
⑶ This plan covers the production scope of the company.
⑷ Risk sources and risk analysis
Coal handling belts, cables, pressure vessels, traveling crane, fuel pump room, etc. are risk
resources, which may lead to firing, explosion, casualties, collapse, destructive earthquake,
flood prevention and control, power failure of whole plant, power grid accident, etc.
⑸ Early warning and prevention
① Early warning
Risk sources will be monitored by remote computers and persons on duty. The
abnormality will be reported immediately.
② Prevention
Conduct rational design and scientific management according to the 25 Important
Requirements on the Prevention of Serious Power Accident, eliminate risks and
hazardous factors intrinsically, carry out annual safety evaluation, identify risks and
hazardous factors, and perform corresponding improvements.
Follow the principle of early identification, early reporting, early disposal, predict
possible events, timely report the emergency control center and notify related
departments.
The preventive measures include material storage, emergency rehearsal, etc.
③ Early warning activity
Immediately report to the shift supervisor and the headquarters if finding out the
target. The headquarters will release emergency rescue order according to the actual
situation. If emergency risk avoiding, emergency response expansion and asking for
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
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Weihai Environmental Protection Research Institute Co., Ltd. 9-2
help are required, the headquarters shall require the office, guarding department, fire
fighting department, health department, etc. to make an emergency response.
⑹ Emergency response
① Response classification
The early warning can be divided into four classes: class I (very serious), class II
(serious), class III (relatively serious) and IV (common), indicating with red, orange,
yellow and blue in sequence.
Red class (I): Personal casualties, power failure of whole plant, destructive
earthquake, serious fire disaster, serious flood, flooding of dam, etc.
Orange class (II): Emergency above class II is about to happen and the event may
worsen.
Yellow class (III): Emergency above class III is about to happen and the event may
worsen. For instance: power grid accident, elevator catching fire.
Blue class (IV): Emergency above class IV is about to happen and the event may
worsen.
The emergencies will be classified according to above classes. The early warning
class will be detailed in the respective plan.
The commander in chief will firstly propose suggestions to early warning according
to the category of emergency and report to the emergency headquarters.
② Response procedure
Emergency procedure includes initial response, response procedure, emergency
expansion, emergency completion, information release, latter disposal, etc.
⑺ Training and rehearsal
① Training
The training of emergency knowledge skills will be contained in the annual work
plan. The Safety Education Department will organize rescue training and study at
least once a year. If necessary, experts will be employed to train the employees on
rescue knowledge and train the commander in chief, members of command party,
rescue workers, operators, other persons, self rescue, mutual rescue, etc.
② Rehearsal
The related plan shall be rehearsed at least once a year by each workshop, so as to
improve the direction level and rescue capacity. Schemes shall be prepared for
rehearsing the plan.
9.2.2 Special emergency rescue plan for serious production accident
The plan lists eight special emergency plans for ensure the operability of emergency plan. See
table 9.2-1 for details.
9 Emergency Plan
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Table 9.2-1 Profile of Special Emergency Rescue Plan for Serious Production Accident of
Botong Thermoelectricity
No. Item Department in
charge
Accident type and hazard level
identification
Emergency
class Emergency disposal
1
Emergency
plan for serious
production
accident of coal
handling belt
Coal handling
workshop
The belt under open flame,
electric welding slag, coal
powder spontaneous combustion,
electrical fire may catch a fire,
etc. According to the variety of
belt used by coal handling
system, the whole coal handling
system belt can be regarded as
the emergency rescue target. The
coal handling belt catching a fire
can endanger the neighboring
belt, cable inside trestle and
surrounding board region.
Class Ⅲ
Stop the operation of the belt catching a fire
to prevent the worsening of burning, cut off
the power supply to electric equipment to
prevent short circuit, use the water
sprinkling isolation facilities at the end of
coal handling belt and neighboring trestle to
prevent fire expansion, use the field fire
fighting water and dry-chemical fire
extinguisher for extinguishment, cover the
belt with sandy soil , close the doors and
windows, isolating channel gates at the
terminals of coal handling belt trestle
catching a fire to reduce air flow, avoid coal
powder flying, reduce burning speed and
provide rescue opportunities. The coal
handling belt support and coal handling
trestle structure threatened by fire can be
cooled down directly with water to prevent
deformation or collapse.
2
Emergency
rescue plan for
firing or
exploded fuel
pump room,
personal
casualties
Coal handling
workshop
The fuel pump room of coal
handling workshop is responsible
for fuel unloading, storage,
supply and effluent oil treatment.
0# light diesel will be used.
Sudden leakage, operation out of
control or natural disaster may
lead to the potential risk of fire
explosion, etc.
ClassⅠ
① Fire caught at oil unloading: Immediately
stop unloading, close the upper cover to
prevent oil evaporation, cut off the oil
pipeline to oil tank to prevent fire spreading,
take the oil tank car to a safe place, cool
down with fire-fighting lance. ② Fuel pump
room catching a fire: Cut off the power
supply if the electric motor catches a fire,
extinguish with carbon dioxide extinguisher.
The oil pump room catching a fire due to oil
gas accumulation shall be extinguished with
water, or foam, carbon dioxide, dry powder,
etc. ③ Oil tank catching a fire: Shut down
the sewer in tank area connecting to the
outside, the valves of valve well. If the
opening of tank top has caught a fire, use the
foam extinguishing system to inject foam of
above 200mm thick, cool down the external
wall of oil tank with cold water to isolate oil
and air.
3
Emergency
rescue plan for
serious fire
disaster of
cable
Electrical
workshop
Cable fire is one of the extreme
serious accidents and it may
cause serious loss, which is
difficult for rescue. The damage
to insulation, overload operation,
external environment, etc. may
cause the insulation breakdown
and short circuit. The electric arc
may lead to cable fire. The power
cable catching a fire may affect
the master control room,
surrounding areas, etc.
ClassⅠ
Stop the operation of equipment if the cable
catches a fire. Identify equipment name,
faulty point according to cable route and
feature, do well in protection, prevent
hazardous gas pickling, protect the fire site,
keep lighting, provide emergency lighting
and positive pressure respirator for entering
fire zone, follow fire fighting regulations in
extinguishing the initial fire, block the fire
doors at two ends of cable trench and other
parts to avoid air flow and facilitate fire
extinguishing, apply stifling method.
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No. Item Department in
charge
Accident type and hazard level
identification
Emergency
class Emergency disposal
4
Emergency
rescue plan for
serious
accidents of
traveling crane,
etc. and
personal
casualties
Engine and
boiler
workshop
Turbine house installed with big
traveling crane ClassⅠ
If the traveling crane or other hoisting
equipment is not functioning normally, the
finder of must immediately notify the shift
supervisor to cut off power supply and
evaluate the workers on site. Then, the
finder shall initially judge the scope of
accident and notify the maintenance
workshop. The maintenance staff arrived
shall firstly build safety guardrails to protect
the accident site and then check the
equipment under failure, identify the causes
and take necessary measures. If the persons
on traveling crane can not escape from
accident site, a latter of sufficient length
shall be provided to rescue them.
5
Emergency
rescue plan for
power failure of
whole plant
Electrical
workshop
The power failure of whole plant
can be caused by system
oscillation, tripping of 35KV
contact line, failure of 35KV bus,
wrong action of protection and
switch, refusal of action or power
failure of important equipment,
serious fire disaster of main
tunnel cable, etc. At a result, the
three units may dump load, the
turbine may trip, the main
throttle valve may close and the
boiler may stop burning, thus
causing insufficient power
generation and breakdown of
some systems.
ClassⅠ
After the power failure of 35KV bus, the
person on duty shall immediately check the
light words, signals, switches and protection
actions, etc. and immediately report to the
shift supervisor; cut off all the switches of
bus, check the equipment system and
immediately report if any problem is found;
check 35KV switch control pressure,
emergency lighting switching, ensure DC
bus voltage, report to the shift supervisor
detailed failure information. The person on
duty shall apply corresponding measures if
the main throttle valve is closed, generator
and system sectionalizing field suppression,
auxiliary power failure, 6KV, 380V bus
failure.
6
Emergency
rescue plan for
personal
casualties
caused by the
explosion of
pressure vessel
Engine and
boiler
workshop
During the operation process of
pressure vessel, the shell fissure,
raw material defect, bolt
breakage, overpressure of
medium, etc. will seriously
damage the pressure vessel and
endanger the staff and equipment
nearby. The accident of pressure
vessel may affect boiler steam
pocket platform and surrounding
boundary.
ClassⅠ
① The person finding that pressure vessel is
damaged or the person receiving alarm must
immediately notify the operator, whom is
required to take reliable measures to switch
the system normally while not endangering
equipment and personnel safety. ② The
operator and the maintenance staff shall
check casualties and damage of neighboring
equipment. Professional rescuers shall be
invited if there is any casualty and reliable
measures shall be applied for rescuing. If the
neighboring equipment is damaged, the
operator shall be contacted to switch
corresponding equipment and cool down the
steam gushed from pressure vessel to
prevent the worsening of accident. ③ The
professional technicians entering the
accident site shall confirm the causes to
failure, prepare perfect repair and
emergency plan with the workshop where
accident has happed. The professional
technicians are also required to provide list
of spare parts to the Materials Supply
Department for procurement according to
inventory. Ensure the successful completion
of rush to repair and dealing with
emergency.
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No. Item Department in
charge
Accident type and hazard level
identification
Emergency
class Emergency disposal
7
Emergency
plan for power
grid accident
and assuring
the power
supply to plant
Electrical
workshop
Abnormal maintenance of 35kV
bus or outgoing line for Weihai,
other line failures due to weather
and wrong action of protection,
which caused power failure of
35kV bus of the company, or the
system oscillation resulted from
the sectionalizing of Weihai
power grid and system, which
caused the power failure of our
company, or large area power
failure of Weihai.
Class Ⅲ
Firstly identify accident feature if the
normal operation of 35kV system is affected
and power system safety is threatened due to
power gird failure or equipment failure, then
process according to related regulations.
8
Special
emergency
rescue plan for
destructive
earthquake
Protection
Technology
Department
The earthquake intensity of plant
site in Weihai is 7 on Richter
scale.
ClassⅠ
① If an earthquake happens, the rescue
team of the company will immediately go to
the plant site to arrange guards and evaluate
people at any time. ② The staff of each
related department will check the steam, hot
water pipelines, water supply pipelines, ash
delivery pipelines, etc. on and under the
ground and apply isolation measures if they
crack. Meanwhile, the superior shall be
reported to apply emergency measures for
avoid the worsening of accident. ③ The
headquarters will notify each department to
implement safety prevention measures,
strengthen routine inspection, timely report
risks and give the order for stopping the
operation of unit.
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
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9.3 Summary
Botong Thermoelectricity has prepared the Environmental Emergency Plan according to
requirements, which can be used to effectively prevent the occurrence and development of
emergency, eliminate the threat to personnel and equipment and minimize the loss.
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10 Social Impact
10.1 Relationship between enterprise and employees
The development of an enterprise lies on the development of employees. Botong
Thermoelectricity has applied a series of measures to improve personnel system, working
environment, welfare, training, etc. to establish a good trustworthy relationship between
enterprise and employees.
10.1.1 Personnel system
(1) Personnel structure
Age structure-At present, Weihai Botong Thermoelectricity Limited Liability Company holds
281 employees, including 95 employees under the age of 30, accounting for 34% of the total,
106 employees aged between 31 and 40, accounting for 38% of the total, 63 employees aged
between 41 and 50, accounting for 22% of the total, 17 employees above the age of 50,
accounting for 6% of the total.
Education background-12 employees of junior high school education and under, accounting for
4.3% of the total, 46 employees of senior high school education, accounting for 16.4% of the
total, 104 employees of technical secondary school and technical school education, accounting
for 37% of the total, 70 employees of junior college education, accounting for 24.9% of the
total, 48 employees of undergraduate course education, accounting for 17.1% of the total, one
employee of postgraduate education, accounting for 0.3% of the total.
Gender structure-281 employees in total, including women of 107 (of which six are cadres),
accounting for 38% of the total, 16 cadres (of which six are women) of medium level and
above. Women cadres of medium level and above account for 30% of the total.
(2) Employee’s participation in decision making, management, promotion and competition
mechanism
Botong Thermoelectricity under the supervision and direction of plant labor union has built a
relative perfect plant affair publication, government affair publication system, a management
system, a labor protection system, a supplementary medical insurance system, etc., which are
related to the long-term development of enterprise and the interests of the employees.
Important decisions must be approved by employee representative meeting before
implementation.
The promotion and competition of posts shall be guided by the principle of “open, fair and
justice”, Work Standard, Management Standard, Post Condition, etc. and be implemented in
many aspects.
10.1.2 Employee training
Botong Thermoelectricity attaches great importance to employee training in the process of
development and carries out training according to specialty. The enterprise will arrange
training to department with environmental protection related posts based on the annual training
plan.
(1) Post training
Gradually train competent maintenance staff according to the requirements of “be expert in one
thing and good at many”; the staff for major posts shall gradually realize full competent
working; all the staff for operation posts shall be trained in turn; cadres and managers of
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 10-2
medium level shall be trained regularly for management knowledge, laws and provisions.
(2) Environmental protection training
Botong Thermoelectricity performed environmental protection training covering following
aspects in 2010 according to 2010 Environmental Protection Training Plan:
① Organized cadres of medium level and above to study the newest environmental
potection laws and provisions through the Internet.
② Train the employees to understand the production process, safety knowledge,
important environmental factors, etc. before they taking up posts.
③ The department requiring posts involving in important environmental factors shall
arrange the training according to the annual training plan, for instance, understand
the important environmental factor of post, master operation procedure and related
documents of post, get familiar with the objective, indicator, management plan of
post, impact of behavior violating operation procedure, etc.
④ Perform training to desulfurization staff for practice.
10.2 Relationship between enterprise and the local residents
As a new rising thermal power enterprise, Botong Thermoelectricity highlights the relationship
with the surrounding residents. Botong Thermoelectricity had conducted a series of energy
conservation, capacity expansion and environmental improvement from 2004 to 2010 based on
scientific progress, in order to realize sustainable development.
(1) Building of new sweetener to reduce pollutant discharge
The enterprise invested RMB 20 million Yuan in desulfuration improvement of boilers 4#, 5
#
with external limestone-gypsum desulfuration technology. Such project was commended in
June 2010. After completion, the desulfuration efficiency can be larger than or equal to 90%.
The project can greatly reduce SO2 emission and improve the regional environment.
(2) Unit heat supply improvement
Along with the improvement of living standard in Weihai City, the demand of urban residents
on heat supply is also increasing. To meet the increasing demand, Botong Thermoelectricity
improved the extraction condensing turbine while not building new boiler, expanding boiler
and increasing atmospheric pollution and applied circulating water in heat supply, which
increased heat supply area of 1.19 million m2.
10.3 Relationship between enterprise and society
The sustainable development of an enterprise must be supported by the local society. Botong
Thermoelectricity, while proactively carrying out environmental protection training to the
employees, functions as an enterprise citizen to get the trust and support from society.
10.4 Summary
Botong Thermoelectricity has applied a series of measures to improve personnel system,
working environment, welfare, training, etc. to establish a good trustworthy relationship
between enterprise and employees and lay a solid foundation for the sustainable development.
Meanwhile, in order to realize the sustainable development of enterprise, Botong
Thermoelectricity attaches with great importance to the relationship with the surrounding
residents and the society. On the one hand, Botong Thermoelectricity carried out a series of
energy conservation, capacity expansion, environmental technology improvement based on
10 Social Impact
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scientific progress to provide a good living environment; on the other hand, Botong
Thermoelectricity fully functions as an enterprise citizen through proactively organizing and
participating in social environmental protection and volunteer activities, etc. to get the trust and
support from society.
11Auditing Conclusion
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11 Auditing Conclusion
The auditing team has made the following conclusion according to auditing assessment,
verification, evidence taking and auditing result.
11.1 Conclusion
1. Project profile
Weihai Botong Thermoelectricity Limited Liability Company (hereinafter referred to as
Botong Thermoelectricity) is a state-owned energy enterprise engaging in heat supply and
power generation established in June 1998, mainly undertaking the task for providing industrial
steam and civil heat supply to Weihai Economic and Technical Development Zone. The
Company now boasts six boilers, three generator sets, with the installed capacity of 60MW and
boiler capacity of 705t/h, 281 employees, total assets of RMB 597 million Yuan, including net
assets of RMB 160 million Yuan. In 2010, the Company supplied heat of 449.81×104GJ/a,
generated electricity of 16152.72×104KWh/a and consumed standard coal of 0.2294 million
t/a.
2. Pollution prevention and control
(1) Exhaust gas
Boilers 1#~3
# apply internal calcium spray desulfuration, with desulfuration efficiency above
50%; three-electric field electrostatic precipitation will be applied for flue gas with dedusting
efficiency of 99.4%; boiler 4#
applies recirculating fluidized bed boiler+limestone-gysum wet
method desulfuration with the efficiency≥90% and three-electric field electrostatic
precipitation with the design dedusting efficiency of 99.4% and comprehensive dedusting
efficiency as 99.78%; boilers 5#, 6
# apply recirculating fluidized bedboiler+limestone-gysum
wet method desulfuration the efficiency≥90% and three-electric field electrostatic precipitation
with the design dedusting efficiency of 99.6% and comprehensive dedusting efficiency as
99.8%.
The first time interval standard of the Emission Standard of Air Pollutants for Thermal Power
Plants (DB37/664-2007) shall be applied for exhaust gas discharged by boilers 1~3#. The
second time interval grade B of the Emission Standard of Air Pollutants for Thermal Power
Plants (DB37/664-2007) shall be applied for exhaust gas discharged by boilers 4~5#. The third
time interval standard shall be applied for boiler 6#.
(2) Wastewater
The wastewater discharged by the current project can be divided into water treatment
wastewater, boiler wastewater, circulating water sewage, domestic sewage, other wastewater,
etc. The chemical water system applying reverse osmosis and electric desalting produces
wastewater with high slat content and little organic pollution. Some wastewater is used for
sprinkling, coal handling, etc., while others is used by Botong New Building Materials Co., Ltd.
The circulating tower with high content of suspended matters in circulating water does not
discharge other pollutants directly; the domestic sewage will be discharged after being treated
by the septic-tank; the wastewater meting the Discharge Standard for Municipal Sewerage
System (CJ343-2010) will flow through urban sewage pipe network to Weihai Zhongrong
Anxin Water Resource Development Co., Ltd. Sewage Treatment Plant for treatment and
discharge.
(3) Noise
Environmental Auditing Report on Technical Transformation for Energy Efficiency Improvement of Weihai Botong
Thermoelectricity Limited Liability Company
Weihai Environmental Protection Research Institute Co., Ltd. 11-2
After mounting a hydrodynamic coupling between the fan and the electromotor to reduce the
intake resistance and afforesting the inner side of the enclosure at southeast boundary, the
measured value of noise at each boundary in daytime and night can meet the Standard of Noise
at Boundary of Industrial Enterprises(GB12348-90) grade 3.
(4) Solid wastes
The solid waste of current project can be divided into domestic garbage and solid production
waste (ash and desulfurized gypsum).
The slag produced from the burning in hearth will be cooled down by slag cooler and be sent to
slag pool for temporary storage; the electrostatic dust collected by electrostatic precipitator will
be sent to ash silo by the pneumatic conveying system and be used by Botong New Building
Materials Co., Ltd. The desulfurized gypsum will be recycled by Botong New Building
Materials Co., Ltd. as the raw material for processing aerated concrete and flyash brick. The
domestic garbage will be collected to Weihai Landfill Site.
3. Environmental management
Botong Thermoelectricity has formulated a complete management system, Environmental
Management System with high environmental management level starting from 2001.
4. Safe production management
The power plant has prepared the Safe Production Management System and is proactively
carrying out safe production examination, self examination and improvement, continuously
improving the safe production management and reducing accidents.
5. Occupational disease prevention and treatment
The power plant has prepared the Occupational Disease Prevention, Treatment and
Implementation Plan and is proactively carrying out prevention, control and elimination of
occupational disease, doing well in occupational disease prevention and treatment, protecting
labor health and the lawful rights.
6. Risk and measures for prevention and control
The power plant has prepared risk and measures for prevention and control to strengthen and
regulate the safety management of hazardous chemicals, ensure the safety of life and property
and the protection of environment.
7. Emergency plan
The power plant has prepared the Environmental Emergency Plan to control the occurrence
and development of emergency, eliminate the threat to personnel and equipment and reduce the
loss to the minimum.
8. Social impact
Botong Thermoelectricity has established a trustworthy relationship with the employees and
will build itself into a environmental-friendly energy base.
9. Total conclusion
According to the environmental auditing analysis in above aspects, Botong Thermoelectricity
prepared detailed pollution prevention and control measures and various regulations, which can
basically meet the requirement of environmental management.
11.2 Measures and suggestions
1. The enterprise shall do well in environmental management according to the requirements
of environmental. Meanwhile, the enterprise is required to regularly carry out environmental
11Auditing Conclusion
Weihai Environmental Protection Research Institute Co., Ltd.
11-3
auditing, continuous improvement of environmental management level.
2. Strengthen the management of environmental protection facilities, ensure the normal
operation and processing efficiency of environmental protection facilities, and qualified
discharge of various pollutants.
3. Strengthen the environmental protection education to employees, implement various
labor protective measures, improve the awareness of safety and environmental protection,
ensure the safety and health of employees.
4. Apply mature and effective risk prevention measures, establish accident emergency plan,
strictly implement monitoring measures, prevent or reduce accidents, personal injury and
environmental pollution. Actively carry out safe production month activity, seasonal safety
inspection, strengthen safety management of production, traffic, important projects,
outsourcing projects, implement safety measures, eliminate wrong management practice,
hidden trouble, avoid the occurrence of accident, realize the control of safety production.
5. The enterprise shall strengthen the communication with the regional society based on the
industrial feature and possible environmental impact, and publicize the enterprise profile,
measures for energy conservation and pollutant discharge to the society regularly.