10 boiler ash removal system commissioning...

Boiler Ash Removal System Commissioning Procedure

Compiled by:

Reviewed by:

Approved by:

2014

Qingdao Huachen Weiye Electric Power Technology Engineering Co., Ltd.

Catalogue

31. overview

32. main equipment technique specification

73.commissioning basis and standard

84.commissioning purpose

85.commissioning range

86.commissioning condition and checking content

117.commissioning process and method

118. commissioning quality and assessment standard

129.Environment, occupational health and safety control procedure

1210. organization and division

1511.Appendix

Boiler Ash Removal System Commissioning Procedure1.

Overview ZMTP 2150MW2510t/h

The project is Zambia ZMTP 2150MW coal fired power plant, located at Maamba coal mine, Sinazongwe, Southern Province. The boiler is produced by Dongfang Boiler Company, which is 2*510t/h high temperature, super high pressure circulating CFB boiler. Here the procedure is for the boiler ash removal system commissioning.2.

Main equipment technique specification2.1

Boiler specificationZambia MCL 2150MW Coal Fired Power Plant2510t/h150MW

Zambia MCL 2150MW Coal Fired Power Plant is provided with two sets of 510t/h super high pressure, natural circulating CFB steam drum boilers, which is single furnace, single medium reheating, thermal isolation cyclone separator, tube-type air preheater, balanced draft, end part double flue, suspension structure, half-unsheltered layout, solid state deslagging, complete steel structure, matched with 150MW condense turbine-generator. The boiler adopts CFB combustion and limestone desulfurization technique that low pollution and high efficiency.Boiler main parameter sheet

Item

Unit BMCRBECR

Main steam flowT/H510485.73

Main steam pressure MPa14.3214.32

Main steam temp. 540540

LP RH inlet pressure MPa2.852.85

LP RH inlet temp.334334

HP RH inlet pressureMPa2.72.7

HP RH inlet temp.540540

RH flowT/H420.42400.4

Feed water temp. 248248

Feed water temp. exclusive all HP171

#1

Feed water temp. exclusive #1 HP228.6

#2

Feed water temp. exclusive #2 HP207.3

(LHV)

Boiler guaranteed efficiency (LHV)90

Boiler desulfurization efficiency 92.3

Coal quality analysis:

DescriptionRange of Coal AnalysisCoal Analysis

PerformanceWorst

ProximateAnalysis(ADB)

Ash%45.3 to 53.2748.353.27

Volatile Matter (ADB)%19.6 to 18.0518.818.08

Fixed Carbon (ADB)%33.7 to 27.4731.5527.44

Inherent Moisture (ADB)%1.4 to 1.211.351.21

Total Moisture%1.9 to 2.11.92.1

Normal Heating ValueKcal/kg4059 to 299035003110

UltimateAnalysis(as received basis)

Carbon (C)%42.8 to 37.0637.533.26

Hydrogen (H2 )%n2.81 to 2.332.452.33

Nitrogen (N2)%0.93 to 0.720.850.72

Oxygen (O2)%6.45 to 6.086.206.34

Sulphur (S)%1.0 to 2.01.7*1.7*

Moisture (H2O)%1.43 to 1.241.902.1

Ash%45.3 to 53.2549.453.55

Gross calorific value (as received basis)Kcal/kg4039 to 319135803191

Hard grove indexHGI595959

Ash Analysis

Silica (SiO2)%61.7 to 61.1361.0861.13

Alumina (A12O3 )%31.0. to 30.8930.5230.89

Iron Oxide (Fe2O3)%4.8 to 3.634.103.63

Titanio (TiO2)%3.00 to 3.443.13.44

Phosphoric Anhydride(P2O5)%0.50 to 0.370.430.37

2.2Ash removal system regulation and main equipment technique data2.2.1

Ash removal system regulation:

MCR230%1Ash removal system adopts positive pneumatic dense phase ash conveying system, which the conveying capacity is not less than 230% ash discharging quantity under MCR working condition. Dust precipitator is single channel ESP, each hopper of precipitator and APH is provided with one set of pneumatic pump. 271422120m331.8mPrecipitator hopper is provided with gasification air system, matching with gasification air fan, electric heater and hopper gasification plate. 2 public ash silos are matched for two boilers, and each boiler is provided with 7 ash pipes, total 14 for two boilers. Each ash pipe can be converted between two ash silos through change-over valves on silo top. The design can satisfy two boilers operation simultaneously, or single boiler operation, and two boilers ash removal systems will not affect each other and guarantee the output. Volume of reinforced concrete ash silo is 2120m3, with top height of 31.8m. /~25%

Gasification device is installed at bottom of ash silo, and ash removal box, exhaust filter (bag dust collector), pressure vacuum release valve, level gauge and other equipment are installed on ash silo top. Two ash removal mode are used under each ash silo with three dumping outlets, in which the first outlet to discharge dry ash to tank truck to outside users; the second to discharge dry ash to humidification mixer to produce wet ash with 25% water content, which is also used by outside user; the third is standby. 1234Pneumatic ash removal system including following sub-system: (1) precipitator (including APH) fly ash conveying system; (2) control air usage system; (3) system of top discharging, exhaust and level indication; (4) control system of pneumatic system. 2.2.1.1

Precipitator fly ash conveying system

()

Precipitator fly ash conveying system (including APH) is designed as one boiler as a unit, from under outlet flange of precipitator and APH hopper to inlet flange of silo top discharging box, including silo and pump assembly (pressure conveying device), pneumatic conveying pipe, pipe change-over valves, pipe expansion joints, pipe blowing devices, etc.

2.2.1.2

Control air usage and bag pulse cleaning air usage system

Used air by pneumatic elements and bag pulse cleaning of top exhaust filter is from compressed air center of the plant for instrument system.

2.2.1.3

System of silo discharging, exhaust and level indication

Including silo top discharging box, silo top exhaust filter (bag dust collector), pressure vacuum releasing valve, silo top pipe change-over valves, level gauge and other equipment and accessories.

2.2.1.4PLC

Control system of pneumatic ash removal system (except PLC control cabinet)

All magnetic valves box and monitoring instrument required by the entire pneumatic ash removal control system. All equipment can be controlled locally by auto and manual, also controlled in control room by remote, and local control can lock the other control modes.

Ash and slag quantity

Coal category

Unit capacity (t/h)

Ash quantity per hour

(t/h)

Ash

Slag

Ash and slag

Design coal 115044.0244.0288.04

215088.0488.04176.08

Checking coal 115053.5953.59107.18

2150107.18107.18214.36

1. 50%50%

Note: slag quantity is calculated as per proportion of 50% of total ash and slag, as well as ash. 2. q4 4.27%

Mechanical imperfect combustion loss: q4 4.27%

3. 3%

Sulfur ARB: 3%Ash quantity of single boiler with two precipitators

Discharging point

Hopper quantity

Ash quantity of each hopper by design coal

Ash quantity of each hopper by checking coal

Precipitator I electric field 226.47 4=25.889.266 4=37.064

Precipitator II electric field221.731 4=6.9242.48 4=9.92

Precipitator III electric field220.4556 4=1.8220.6525 4=261

Precipitator IV electric field220.2734 4=1.09360.3915 4=1.566

Precipitator V electric field220.1367 4=0.54680.1958 4=0.7832

Precipitator VI electric field220.04556 4=0.18220.06525 4=0.261

APH hopper

40.911 4=3.6441.305 4=5.22

2.2.2

Main equipment technique data of ash removal system

APH pressure conveying device

Type 6.0E/8

Inlet diameter DN200

Capacity per set 0.20 M3

Outlet diameter DN100

Silo and pump assembly height

Including compensator, rectangle-circle connector, manual pneumatic valves

Design pressure 1.0 MPa

Working pressure 0.35 MPa

Device weight 610 Kg

Output 6.003t/h

Working temperature 400

Usage temperature range 0-380

Material

Ductile cast iron

/

Transmitter inner diameter/wall thickness 0.58m/18mm

Pump thickness 18mm

Manufacturer

Clyde

Pressure conveying device of electric field fly ash (filling for various fields)

Conveying pump

I field

II field

III field

IV field

V field

VI field

Type 80/880/89/88.0/88.0/88.0/8

Inlet diameter DN200DN200DN200DN200DN200DN200

Capacity per set 2.502.500.330.300.300.30

Outlet diameter DN150DN150DN150DN150DN150DN150

1.0MPa1.0MPa1.0MPa1.0MPa1.0MPa1.0MPa

Design pressure 0.350.350.350.350.350.35

Device weight 1300Kg1300Kg750Kg710Kg710Kg710Kg

Output 85.24t/h22.81t/h6.003t/h3.602t/h1.801t/h0.6t/h

Working temperature 150150150150150150

Usage temperature range 0-1500-1500-1500-1500-1500-150

Material 16MnR16MnR16MnR

Ductile cast iron

Ductile cast iron

Ductile cast iron

Service life of pump (pressurized components) (considering abrasion)30

30 years 30

30 years30

30 years 30

30 years30

30 years 30

30 years

Gasification plate material of transmitter

No

No

No

No

No

No

Gasification plate service life of transmitter

No

No

No

No

No

No

/

Transmitter inner diameter/wall thickness 8mm8mm6mm15mm15mm15mm

Pump thickness 8mm8mm6mm15mm15mm15mm

Manufacturer

Clyde

Clyde

Clyde

Clyde

Clyde

Clyde

Quantity 888888

120.06t/h

System output for each boiler: (system output: 120.06t/h)

Hopper conveying pipe output of I field 85.24th

Hopper conveying pipe output of II field22.81-85.24th

Hopper conveying pipe output of III field6.003-22.81th

Hopper conveying pipe output of IV field3.602-6.003th

Hopper conveying pipe output of V field1.801-3.602th

Hopper conveying pipe output of VI field0.6003-2.401th

Hopper conveying pipe output of APH6.003th

120.06t/h

Average proportion of conveying ash and air (system output: 120.06t/h)

Proportion of conveying ash and air of I field 39.7 kgkg

Proportion of conveying ash and air of II field39.7 kgkg

Proportion of conveying ash and air of III field31.7 kgkg

Proportion of conveying ash and air of IV field31.7 kgkg

Proportion of conveying ash and air of V field31.7 kgkg

Proportion of conveying ash and air of VI field31.7 kgkg

Proportion of conveying ash and air of APH field30.1 kgkg

Proportion of conveying ash and air of each boiler38.2 kgkg

Expansion joint under hopper

I field

II field

Fields of III, IV, V and VI

APH

Mode and type

Flexible joint

Flexible joint

No

No

Quantity 88

Specification DN200DN200

Design pressure

Normal pressure

Normal pressure

Temperature tolerance 200200

Material

Stainless steel

Stainless stee

Compensation 40mm40mm

Manufacturer

Clyde

Clyde

Transition rectangle-circle connector

I field

II field


APH

Quantity 888/

8 per field 4

Specification 200x200-DN200200x200-DN200200x200-DN200200x200-DN200

Material Q235Q235Q235Q235

Manufacturer

Clyde

Clyde

Clyde

Clyde

Pneumatic dome valve

I field

II field


APH

Mode and type





Specification DN200DN200DN200DN200

Driving mode

Pneumatic

Pneumatic

Pneumatic

Pneumatic

Valve body material

Ductile cast iron

Ductile cast iron

Ductile cast iron

Ductile cast iron

Valve plate material

Ductile cast iron

Ductile cast iron

Ductile cast iron

Ductile cast iron

Seal ring material

Special rubber

Special rubber

Special rubber

Special rubber

Seal ring type DN200DN200DN200DN200

Manufacturer

Clyde

Clyde

Clyde

Clyde

Quantity 888/

8 per field 4

Silo pump discharging valve

I field

II field

III field

Fields of IV, V and VI

APH

Mode and type

No

No

No


No

Specification DN150

Driving mode

Pneumatic

Valve body material

Ductile cast iron


Ductile cast iron

Seal ring material

Special rubber

Seal ring type DN150

Manufacturer

Clyde

Quantity 6

Pneumatic air admission valve, including silo pumps various valves and components (including air admission components on main ash conveying pipe and discharging pipe)

I field

II field


APH

Mode and type

Pneumatic butterfly damper




Quantity 4482

Driving mode

Pneumatic

Pneumatic

Pneumatic

Pneumatic

Specification DN65DN65DN50DN50

Valve body material

Cast steel

Cast steel

Cast steel

Cast steel


Cast steel

Cast steel

Cast steel

Cast steel

Seal surface material

Hard seal

Hard seal

Hard seal

Hard seal

Manufacturer

Clyde

Clyde

Clyde

Clyde

Pneumatic exhaust valve, including various valves and components of silo pump exhaust components, classified by use in different ESP and filled as per different pipe diameter and pressure.

I field

II field


APH

Mode and type



No

No

Quantity 88

Driving mode

Pneumatic

Pneumatic

Specification DN80DN80

Valve body material

Ductile cast iron

Ductile cast iron


Ductile cast iron

Ductile cast iron

Seal ring material

Special rubber

Special rubber

Service life of valve body and plug2000020000

Manufacturer

Clyde

Clyde

Silo pump discharging pipe isolation valve

I field

II field

III field

Fields of, IV, V and VI

APH

Mode and type

Damper valve

Damper valve

Damper valve

Damper valve

Damper valve

Quantity 2222/

2 per field 2

Driving mode

Manual

Manual

Manual

Manual

Manual

Specification DN150DN150DN150DN150DN125

Valve body material

Cast iron

Cast iron

Cast iron

Cast iron

Cast iron


Cast iron

Cast iron

Cast iron

Cast iron

Cast iron

Seal ring material ----------

Manufacturer

Clyde

Clyde

Clyde

Clyde

Clyde

Discharging valve

I field

II field

III field

Fields of, IV, V and VI

APH

Mode and type

Ball valve

Ball valve

Ball valve

Ball valve

Ball valve

Quantity 44222

Driving mode

Pneumatic

Pneumatic

Pneumatic

Pneumatic

Pneumatic

Specification DN50DN50DN50DN50DN50

Valve body material

Cast steel

Cast steel

Cast steel

Cast steel

Cast steel


Cast steel

Cast steel

Cast steel

Cast steel

Cast steel

Seal surface material

Alloy steel

Alloy steel

Alloy steel

Alloy steel

Alloy steel

Seal ring material

No

No

No

No

No

Manufacturer

Clyde

Clyde

Clyde

Clyde

Clyde

3.

Commissioning basis and standard

3.1DL/T5437-2009

Code for Fossil Power Construction Project from the Unit Commissioning to Completed Acceptance by NationalEnergy Administration DL/T5437-20093.2DL/T5190.2--2012

The Code of Erection and Acceptance of Electric Power Construction Section of Steam Boiler Set (DL/T5190.22012)3.31996[1996]111

Standard for Quality Inspection and Evaluation on the Commissioning of ThermalPower Plant (1996 version)3.41996[1996]40

Regulations on the Start-up Commissioning of Thermal Power Plant Projects (1996 version)3.5[2006]

ThermalPowerProduction Evaluation Standards by Power Construction Association3.6DL612-1996

Supervision Code for Boiler and Pressure Vessel of thePowerIndustry (DL612-1996)3.7DL5009.1-2002

Code of Safety Operation inPowerEngineering Construction Part 1: SteamPowerPlantsby ElectricPowerIndustry Standard3.8[2002]49

Health Safety and environment Management Regulation for Power Construction by State Power Corporation [2002]493.9DL/T852-2004

Guide for Boiler Start-Up Commissioning Test byNDRC DLT852-20043.10[1998]179

Performance Test Code of Thermal Power Plant Startup and Acceptance [1998]1793.11[2000]589

Twenty-five Key Requirements to Prevent Serious Accident and Failure in ElectricPowerOperation State Power [2000]5893.12

Relevant contracts, design drawings, manufacture introduction, technique agreement and other documents3.13

Relevant regualtion and rules of state and industry

3.1 4 MCL 2150MWCommissioning outline of Zambia MCL 2150MW coal fired power plant project4.

Commissioning purpose4.1

Check all equipment manufacturing and erection quality of boiler ash removal system.4.2

Check electric and I&C protections interlock and signal devices, and confirm the action reliability.4.3

Check system and equipment operation, test system performance, check out and eliminate the possible failures.

4.4

Guarantee all equipment in normal condition and safe, stable and economic operation through ash removal system commissioning. 5

Commissioning range

Ash removal system commissioning including: valves open/close check, static interlock protection test and alarm test of equipment, equipment dynamic interlock protection test, system interlock protection test, equipment static and dynamic startup/shutdown test, ash removal program test, ash removal system tightness test, dynamic operation of ash removal system

6.

Commissioning condition and checking content1

Before system commissioning, the provided condition as per content of (appendix 1: condition checking list before integral startup) shall be checked completely by commissioning staffs, with recording.7.

Commissioning process, procedure and method7.1Commissioning procedure of ash removal system

Commissioning flow chart

7.2Commissioning procedure and method of ash removal system

7.2.1

Open/close test of actuators

7.2.2 PLCOpen/close or change over ash removal valves through PLC to confirm local action correction and flexibility. Channel check for important I&C signal points.

7.2.3

Gasification air system test of ash hopper:11

Operation mode: one in operation and one in standby

Electrical heater startup condition: gasification air fan in operation

Gasification air fan shutdown condition: electrical heater shutdown

Gasification air fan trip, interlock shutdown electrical heater

When operating air fan trip caused by failure, interlock open standby air fan outlet motor valve and alarm, start standby air fan.

7.2.4

Gasification air system of ash silo:

21

Operation mode: 2 in operation and 1 in standby

Electrical heater startup condition: gasification air fan in operation

Gasification air fan shutdown condition: electrical heater shutdown

Electrical heater trip, interlock shutdown Gasification air fan

When operating air fan trip caused by failure, interlock open standby air fan outlet motor valve and alarm, start standby air fan.

7.2.5

Ash removal air compressor system

102


10

If pressure is low when 10 in operation, interlock start standby air compressor.

7.2.6

Cold dryer system

62


6,

When six sets in operation and one is trip by failure, interlock standby cold dryer (firstly open outlet motor valves).

7.2.7

Ash removal startup

a.:startup procedure of ash removal system

20

20 hours before boiler firing, put electrical heater of precipitator hopper; 72100

72 hours before ash silo receiving ash, put ventilation to dry and open all gasification valves of ash silo to maintain gasification air temperature at 100 by put one set of gasification air fan and one heater into operation.

Check that lube oil, cooling water, dryers and other parts of air compressor system shall conform to startup requirement; reversely operate air conveying system as per regulated sequence, firstly start one cold dryer and then start air compressors one by one.

Filers and gas tanks of started air compressors shall be cleaned up without deposited water.

Air source pressure of conveying and control systems shall be regulated to satisfy pressure of ash silo pump and pipe operation, and gas tank pressure shall meet design requirement.

Put bag filter of ash silo, air source and bag vibration shall be checked and normal.

All hoppers, ash silo pumps, level gauges and heaters shall be checked, which shall be at auto control position.

Manual butterfly valve of ash hopper shall be checked at closing position, put positive pressure ash conveying system compressed air blowing into operation; each group of ash silo pump shall be blown one time by manual, and then put auto ash cleaning program into operation, after at least three circulation, then into ash conveying operation. I/,

Open manual butterfly valve of ash hopper, and put ash silo pump into operation; as per principle of firstly less ash and then more ash, put ash hopper pump of economizer, ash hopper pump of denitration, ash hopper pump of ESP I/II field and ash hopper pump of bag dust collector into operation.

When ash pumps into operation, check ash flow condition at all time, and hammer it when it is necessary; if ash blocking is appeared, close inlet ash valve and convert to compressed air blowing operation.

8Before silo ash storage, all gasification pipes shall be checked without blocking, and pipe temperature is a little hot; ash discharging shall be carried out after 8 hours continuous storage to prevent deposit at silo bottom; according to requirements of truck loading, put dry and wet ash discharging devices, and one wet pump shall be started firstly before wet ash discharging into operation. b.

Shutdown sequence of ash system

After boiler blowing out, shutdown ash pump one by one until all ash in hopper is completely evacuated according to ash deposit condition.

Deposit ash in silo shall be discharged completely.

60

If gasification air fan system is required to shutdown, firstly shutdown electrical heater to wait for temperature falling under 60, and then shutdown gasification air fan system.

Air compressors shutdown can be carried out as per system requirements.

8.

8.11996100%90%

Quality standard requirements of the system and equipment shall be satisfied according to Standard for Quality Inspection and Evaluation on the Commissioning of ThermalPower Plant (1996 version), with 100% qualified rate and 90% excellent rate, meeting the unit startup requirements.8.2

Commissioning professional and supervisor shall enforce check and control for key points of commissioning quality, and report to higher level leader when find out problems to coordinate and solve to ensure successful startup commissioning.9.

Environment, occupational health and safety control procedure9.1

The system shall be organized and commanded coordinately, any change by personnel is forbidden. The commissioning shall not affect unit safety, if any event that may affect the unit safety and stability, stop commissioning at once and recover stable operation of the unit. When the unit is confirmed in stable condition, restart commissioning again. The commissioning shall be organized and commanded under headquarter.9.2

All commissioning staff shall strictly carry out Safety Regulation and on-site relevant safety regulation to ensure the commissioning safety and reliability.9.3

If find out abnormal condition during commissioning, timely regulate and report to leader; if exists possibility that may endanger personnel and equipment, stop commissioning at once or shutdown the unit when it is necessary. 9.4

If abnormal situation happens during the commissioning, instantly adjust it and report it to headquarter.9.5

Professionals shall be on site during the commissioning to ensure the safety of running equipment and personnel.9.6When carry out equipment maintenance, relevant safety measures and working orders shall be necessary.

9.7 Before ash silo to store ash, it shall be dried completely. Before silo pump starting, ash hopper fluidization shall be checked to guarantee when ESP into operation, the fluidization device shall be followed into operation. 9.8 When ash silo in operation condition, working condition of bag filter shall be checked at all time to prevent deposit, which will cause high back pressure of ash silo to block ash conveying pipe. 9.9When system no-load, hopper blocking and other alarm signals does not work, timely change to manual control and check whether exist ash deposit in all units in order to handle. 9.10 When check and measure ash pipe and pumps, change to manual operation. 9.11Working staffs and operators engaged in startup commissioning shall be familiar with process flow and relevant technique standard of ash removal system. 10.

Organization and division10.1

Erection unit10.1.1

In charge of compiling commissioning report.10.1.2

In charge of the system isolation and closing.10.1.3

In charge of maintenance, overhaul and troubleshooting of commissioning equipment.10.1.4

Prepare necessary overhaul tools and material.10.1.5

Coordinate with the commissioning unit to carry out subsystem commissioning.10.1.6

In charge of check and acceptance after subsystem commissioning.10.1.7

10.2

Construction unit10.2.1

In charge of equipment startup, shutdown, operation control and accident elimination during the commissioning.10.2.2

In charge of formal mark for relevant systems and equipment.10.2.3

Prepare operation regulation, tools and record sheet.10.2.4

In charge of inspection and normal maintenance for commissioning equipment.10.3

Commissioning unit10.3.1

In charge of compiling commissioning procedure and technique handover.10.3.2

Prepare relevant measuring instrument, apparatus and tools.10.3.3

Engage in subsystem commissioning.10.3.4

In charge of test data recording and filing.10.3.5

Engage in check and acceptance after subsystem commissioning.10.3.6

In charge of compiling commissioning report.10.4

Supervisory unit

In charge of supervisory work during starting and commissioning as per the contract, supervise the procedure execution, engage in the commissioning, check and acceptance.11Appendix

1

Appendix 1: Checking list before commissioning condition

Checking list of commissioning condition

Class

No.

Item

Time

Result

Remark

machine1

Commissioning procedure has been compiled with complete approval procedure.

2()

Erection is completed; secondary grouting is completed; relevant pipes (including suspension) erection is completed.

3

Commission equipment is complete with necessary nameplates; system connection is complete.

4Cooling and sealing system are complete.

5

Lube oil quality is qualified with normal level.

6Auxiliaries (such as oil station and valves) commissioning of large rotation machines shall be qualified and approved.

7

System manual, motor and single commissioning shall be completed with approval sheet.

8Pipe blowing and flushing shall be completed, pipe pressure test shall be completed with approval sheet.

9,Calibration of safety valves and pressure release valves of system shall be correct with recording.

10

Coupling connection and protection shield of rotation machine shall be complete.

11No-load turning of rotation machine shall be flexible.

12Rotation machine centering shall be completed with recording.

13

If exist possibility of reverse running, if adopts reliable braking measures.

electrical 14

Electrical switch insulation shall be qualified and recorded.

15

Electrical switch driving test shall be completed and qualified with approval sheet.

16

Electrical erection, cable laying, blocking and connection shall be completed.

17

Cable and motor insulation test shall be completed, qualified and recorded.

18

The ground connection shall be qualified. The motor ground connection strap and bolt shall be qualified. The connection section area from strap to ground shall be qualified.

19

Electrical protection driving test shall be completed, with correct action and constant value, and recorded.

20

Confirm that electrical protection has been put into operation.

I&C21

I&C equipment, signal and instrument pipe shall be completed.

22

I&C measuring points shall be completed.

23

I&C, electrical measuring points driving shall be correct and recorded.

24

Instrument and meter calibration shall be completed, with correct measuring range, and recorded.

25

I&C logic and protection driving shall be normal with approval sheet.

26

All I&C protection constant value shall be correct with protection.

other27

Equipment and system temporary name plates shall be completed.

28

Commissioning tools and material shall be sufficient.

29

All professionals shall be on duty, safety and technique handover shall be carried out.

30

Commissioning communication facilities shall be complete with qualified communication.

31

Recording sheet shall be completed.

32

Environment shall be cleaned up; scaffold that may affect the commissioning shall be removed; ground and site shall be cleaned without sundries.

33

Commissioning passageway shall be unblocked with sufficient illumination.

34

Holes and ditches cover plate, platform, stair and handrails shall be completed.

35

Firefighting facilities in commissioning area shall be put into operation, or temporary facilities shall be provided.

Responsible person of commissioning unit:

Responsible person of supervisory unit:

Responsible person of production unit:

Responsible person of erection unit:

Responsible person of construction unit:

Date:

System pipe and equipment erection are completed, with complete recording.

I&C and electrical instruments erection are completed, calibration is qualified, and it can put into operation.

Single commissioning of system equipment is qualified.

Technique handover

Condition confirm before commissioning

System valve driving test

Air single protection test, cold dryer single protection test;

Ash hopper gasification air fan interlock protection test;

Ash cellar gasification air fan interlock protection test;

Ash removal water pump interlock protection test;

Startup/shutdown test of system equipment;

Static test of ash removal system

System dynamic and static interlock test

Tightness test by starting air compressor

Dynamic program commissioning

33

10 boiler ash removal system commissioning...

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