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SOUTHCOSOUTHCO

PRESENTATIONPRESENTATION

ON SAFETY MEASURESON SAFETY MEASURES

= = = = = = = = = = = = = = = = == = = = = = = = = = = = = = = = =

BEFORE HON’BLE BEFORE HON’BLE

OERCOERC

DATE 02ND MAY’ 2009

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A. GIST OF PREVENTIVE ACTION TAKEN BY SOUTHCO

1. SOUTHCO IS MAKING DUAL EFFORTS FOR PREVENTING ACCIDENTS & IMPROVING SAFETY OF THE WORKMEN AS WELL AS PUBLIC

2. BESIDES PROVIDING SAFETY EQUIPMENTS, ON SIGHT TRAINING IS ALSO BEING PROVIDED TO THE WORKMEN

3. TE TRAINING PROGRAM NOT ONLY COVERS TRAINING MANUAL BUT ASLO THE SET OF QUESTIONARIES, DO’S & DONT’S

4. THE TOPICS COVERED IN THE TRAININGS ARE AS FOLLOWS

- Fundamentals of Electrical Hazards

- Safe Practices in Power Distribution

- Safety measures & First Aid

- Accidents and Reporting

- Minimum Statutory Electrical Clearance

- Myths & Misconceptions

- Electrical Safety

- Summary of Hazards and Protections

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More than 3 mapainful shock

More than 10 mamuscle contraction “no-let-go” danger

More than 30 malung paralysis- usually temporary

More than 50 mapossible ventricular fib. (heart dysfunction, usually fatal)

100 ma to 4 ampscertain ventricular fibrillation, fatal

Over 4 ampsheart paralysis; severe burns. Usually caused by >600 volts

Fundamentals of Electrical HazardsFundamentals of Electrical Hazards

SOUTHCO

INTRODUCTION

A considerable number of electrical installations is coming up every year by way of village electrification (MNP, RGGY, PMGY, Biju Gramina yojna) and pump set energisation under different REC schemes as well as deposit works

The number of Electrical accident is increasing day by day due to

• Non observance of safety provisions under I.E. rules and

• Carelessness and negligence in Maintenance work

• Non observation of traffic rules by general public

• Non-ordination of different Govt departments in execution of Projects

• It has been noticed that our employees although aware of the risks and safety precautions to be taken; do not observe them due to over confidence and familiarity with the lines and equipments

SAFE PRACTICES IN POWER DISTRIBUTION

SOUTHCO

• The General safety precautions to be adopted for different electrical installations has been envisaged in chapter IV of the I.E rules 1956

• In addition, some more safety precautions have also been provided under rule 61, 67, 90 and 91 of the I.E rules

• The Central Electricity Board (Ministry of Irrigation & Power, New Delhi) has published a “Model code” for safe operation and Maintenance of Transmission and Distribution systems

• The REC, New Delhi has also brought out a safety manual” REC MANUAL/ 1974 covers the safety procedures and precautions to be observed by the employees of the electricity undertakings in the prevention of accidents

SAFETY MEASURES AND FIRST AIDSAFETY MEASURES AND FIRST AID

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SOUTHCO

ACCIDENTS & REPORTING

MAIN CAUSE LEAD TO AN ACCIDENT

• Bypasses fuses, MCB (Miniature Circuit Breaker), etc

• Use of re-wirable fuses

• Earthing defects and Accessible live parts

• Electrical rubber mat

• Wrong identification of equipment/ Feeders

• Defective electrical portable tools

• Interlocks provided for multiple power sources

• Is the interlocking system in place

• Operational clearance as per IER 56

• Tripping hazards due to loose cabling / Cords, etc

• Adequacy of illumination in electrical rooms/ around panels, DBs etc

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SOUTHCO

ACCIDENTS & REPORTING

ELECTRICAL FIRE HAZARDS

• Storage of combustible materials near electrical equipment/ Fuse units

• Proper cable joint procedures as per manufacturer

• Earthing defects

• Use of non standard fuse wires

• By passing of protection devices

• Deteriorated insulation

• Sealing of cable passes, openings, baffle walls (Inactive fire protection)

• Unused openings in live panels, etc

• Possibility of ground fault / Short circuit

• Mechanical protection to cables

• Loose terminations due to improper supports, crimping

• Improper gland installation, wrong lug size

• Over rated fuses wrongly set protection relays etc

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MINIMUM STATUTARY ELECTRICAL CLEARANCES

Sl No

CATEGORY OF CLEARANCES

Unit LV MV 11 KV 33 KV 66 KV132 KV

220 KV

400 KV

Remark

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Clearance if Overhead Electrical Lines across the street Mtr 5.8 5.8 6.1 6.1 6.4 7.015 7.33 9.5

Rule 77 I.E. Rule 1956

2 Along the street Mtr 5.5 5.5 5.8 5.8 6.4 7.015 7.83 9.5 -do-

3 Else where Mtr 4.6 4.6 4.6 5.5 5.805 6.415 7.33 8.9 -do-

4Minimum clearance between Conductor & Tree Mtr     2.6 2.8 3.4 4.0 4.6 5.5

I.S., 5613

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Clearance to Ground at crossing with tram Way / Trolley Mtr 1.2 1.2 2.44 2.44 3.05 3.85 3.57  

Rule 78 of I.E. Rule 1956

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Clearance to Ground at crossing with telecom lines

Mtr         2.44 2.75 3.05  

I.S.-5613 (part-S/S- 1) 1985

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Clearance to Ground at railway crossing. (Board/Narrow/Meter gauge) line inside the Station Mtr     13.25 13.25 13.59 14.20 15.11  

I.S. 5613 (part-2) sec-2 1985

8Outside the Station

Mtr     11.28 11.28 11.59 12.2 13.11   -do-

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Clearance to ground at electrified Railway (Board/Narrow/Meter gauge) line inside the Station Mtr     15.28 15.28 15.59 16.2 18.66  

-do-

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Sl No

CATEGORY OF CLEARANCES

Unit LV MV 11 KV 33 KV 66 KV132 KV

220 KV

400 KV

Remark

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Outside the Station

Mtr     13.28 13.28 13.59 14.215.1

1  

-do-

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Vertical clearance of over-head electrical line, from any flat roof, open, saicony, verandah rood of any building Mtr 2.5 2.5 3.7 3.7 4 4.6 5.4 7.04

Rule-79 & 80 of I.E. Rule, 1956

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Horizontal clearance of over-head elect. Line from any flat-room, open balcony varandah roof and lean to roof of any building. Mtr 1.2 1.2 1.2 2.0 2.3 2.9 3.7 5.34

Rule-79 & 80 of I.E. Rule, 1956

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Ground clearance in out door sub-station

Mtr     2.75 3.7 4.0 4.6 5.5 8.0

Rule-64-2 (a) (ii) of IER' 56

14Sectional clearance in out-door sub-station Mtr     2.6 2.8 3.0 3.6 4.3 5.57

-do-

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Minimum clearance from live conductor of power line to earthed metal parts

Mtr       0.33 0.915 1.33 2.13  

I.S. 5613 (part-2/ Sec-1) 1995

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Clearance of live parts to earthed metal parts of out-door switch-gears. Mtr     0.12 0.32 0.63 0.9 1.3  

IS-10118 (part-III) 1957

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Sl No

CATEGORY OF CLEARANCES

Unit LV MV11 KV

33 KV

66 KV

132 KV

220 KV

400 KV

Remark

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Phase to phase clearance of over head line

Mtr     0.4 0.4 0.751.35

to 1.6

2.3 to

2.7

3.4 to

5.2IS-5623

18Phase to phase clearance inside sub-station Mtr     0.4 0.4 0.75 1.35 2.3 3.4

-do-

19Phase to phase clearance inside switch-gear Mtr     0.12 0.32 0.63 1.3 1.5 2.4

-do-

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Clearance of Right-of-way width

Mtr     7 15 18 27 35 52

IS-5613 (part-2/sec-2) 1985

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Mid-span clearnce between earth wire and power conductor of transmission line. Mtr       1.5 3.0 6.1 5.5  

-do-

22Clearance between lines when crossing each other Mtr     2.44 2.44 2.44 3.05 4.58  

-do-

Myths and MisconceptionsMyths and Misconceptions

Electricity takes the path of least resistance.

Electricity wants to go to ground.

If an electric tools falls into a sink or tub of water, the item will short out.

Myths and MisconceptionsMyths and Misconceptions

AC reverse polarity is not hazardous.

It takes high voltage to kill; 120 volts is not dangerous.

Double insulated power tools are doubly safe and can be used in wet and damp

locations.

ELECTRICAL SAFETY

1. Advice from Virginia Power

A. If you are in a vehicle and Power Lines fall on

vehicle - stay inside (If you are driving continue to

drive away from line.)

B. If you are outside the vehicle - Stay Away.

C. It’s wise to be overly cautious.

2. It is not unusual in a disaster for more people to

be killed by carelessness in the aftermath than were

killed by the event itself.

3. Watch for submerged transformers.

ELECTRICAL SAFETY

4. If you discover downed power lines - Note Location

(i.e. Street, Address & Approx. Distance to nearest Cross Street.)

5. If possible, obtain Pole Number or the Pole Number closest to downed wires.

6. Do not drive through standing water if there are downed lines in the water.

Summary – Hazards & ProtectionsHazards• Inadequate wiring• Exposed electrical parts• Wires with bad insulation• Ungrounded electrical systems

and tools• Overloaded circuits• Damaged power tools and

equipment• Using the wrong PPE and tools• Overhead power lines• All hazards are made worse in

wet conditions

Protective Measures• Proper grounding• Use GFCI’s• Use fuses and circuit

breakers• Guard live parts• Lockout/ Tagout• Proper use of flexible

cords• Close electric panels• Training

• One training center of SOUTHCO is located at Ambagada Grid S/S colony where the new entrants in the level of junior manager / Asst Manager / Junior Accountants are being given training by the senior level officers regarding regulation, Act, Safety measures , financial training and consumer services etc.

• On Site training programme was conducted at Circle/ Division and sub-division level for employees to know the safety measures and accident prevention procedure while working in live line. The details of trainings provided during the FY 2008-09 is as follows.

• ALL THE SUB-DIVISIONS WILL BE AGAIN COVERED IN THE CURRENT FY 2009-10

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Sl No Date Name of the Circle/ Div/ Sub-Divn.

1 6.1.2008 Jeypore Circle

2 7.1.2008 Rayagada Circle

3 4.2.2008 Bhanjanagar Circle

4 8.4.2008 Chatrapur Sub-Division

5 9.4.2008 Rambha Sub-Division

6 10.4.2008 Khallikote Sub-Division

7 11.4.2008 Hinjilicut Sub-Division

8 14.4.2008 Aska Sub-Division

9 15.4.2008 Kabisurya Nagar Sub-Division

10 16.4.2008 Polosara Sub-Division

11 17.4.2008 Digapahandi Sub-Division

12 18.4.2008 Chikiti Sub- Division

13 9.5.2008 Paralakhemundi Sub-Division

14 23.5.2008 Purusottampur Sub-Division

15 9.8.2008 Berhampur Electrical Division No-I

16 11.8.2008 Berhampur Electrical Division No- II

17 15.12.2008 Rayagada, Paralakhemundi and Gunupur Sub-Divisions

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On dated 10.9.2008 in the officer chamber of Conservator of Forest, Berhampur Circle, Berhampur, a co-ordination meeting was held to conduct a joint verification of transmission lines (under Gajapati, Ganjam, Phullabani & Boudh) to rectify the deficiency therein to avoid accident to animals Hence 19 forest ranges were jointly surveyed and the deficiency observed under 7 nos forest ranges have already been rectified

Such as shifting of lines , erecting of intermediate poles and providing ‘T’ clumps to maintained correct ground clearanceThe rectification works under 4 forest ranges are under progress. The deficiencies in the balance 8 forest ranges will be complied immediately on receipt of the estimate which are under progres

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ITEM DETAILSMAINTENANCE 2008-

09ACTION PLAN 2009-10

BY JULY' 10

Maintenance of Lines

33 KV LINES 2741.77 KMS 2583 KMS FULL

11 KV LINES 14337.62 KMS 10210 KMS FULL

LT LINES 10241.60 KMS 4300 KMS 8000 KMS

Replacement of damanged Stays Procured Utilised 2008-09 Planed 2009-10

Insulators 200 50

HT Stay 1600 350

LT Stay 781 250

Stay Wire 10080 KG 3000 KG

Repair of Tilted Poles 2377 Nos 800 Nos ALL TILTED POLES

Replacement of Cross Arms 800 Nos 300 Nos

Restringing of ConductorsHT 50 KMs/ LT 90 KMS

B. PREVENTIVE STEPS TAKEN BY SOUTHCO AS PER LETTER OF CEI (T&D) 1924 DATED 16.07.08 AND 769 DATED 31.03.09

READ WITH OERC LETTER NO. 885 DATED 24.04.09

ALL THE DAMAGED STAY

SETS WHICH WILL BE REPLACED

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ITEM EXISTINGMAINTENANCE 2008-

09ACTION PLAN 2009-10

BY JULY' 10

Maintenance of Sub-stations

33/11 KV 123 123 FULL

11/0.4 KV 11583 4300 8000

Replacement of Damanged Stays 50

Repair/ Replacement of AB Switchs 80 Nos 30/5

Checking/Replacement of Jumpers All 33/11 KV SS All

Operation of Breakers at 33/11 KV SS

We have procured 18 nos 33KV and 55 Nos of 11KV VCBs during FY

2007-08 and 2008-

7 Nos New/25 Nos Old Breakers

Repaired & brought into servcie

25 Nos New & 80 Nos old

Upkeeping of Registers at 33KV SS

Periodical Inspction of Lines & SS Twice in a year once before Moonsoon & during Winter Season

PREVENTIVE STEPS TAKEN BY SOUTHCO AS PER LETTER OF CEI (T&D) 1924 DATED 16.07.08 AND 769 DATED 31.03.09

READ WITH OERC LETTER NO. 885 DATED 24.04.09

Inturruption Report, Line Clearance, Transformers & Breakers Records Maintained

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•THE MEASURES TAKEN BY SOUTHCO INCLUDES INSTALLTAION OF GOOD NUMBER OF 33 AND 11 KV VCBs, REPLACEMENT OF AB SWITCH, HG FUSES, RENOVATING EARTHINGS IN THE PRIMARY SS FOR SAFE OPERATION

• LINE MAINTENANCE, TRIMMING OF TREES, ETC

• T-CLAMP, F-CLAMP, PG CLAMP ARE REPLACED INCLUDING NEW JUMPERING AND REPLACEMENT OF HIGHER SIZE BUS-CONDUCTOR IN ALL 33/11 KV SS

• TILTED POLES AND CROSS ARMS OF ALL THE LINES AND SS AFTER INSPECTION ARE PLANNED TO BE RECTIFIED BY 2009-10

• COMOUND WALLS /BARBED WIRE FENCING ARE COMPLETED FOR 32 (100) NOS OF SS AND PLANNED FURTHER TO PROVIDE IN ALL THE SUB-STATIONS. BARBED WIRE FENCING IS PROVIDED TO 55 (100) NOS OF SS

• WE HAVE PROCURED EARTHING DEVICE 1904 NOS, EARTHING COIL 1665 KVS & GI FLAT 8039 KGS AND STARTED RENOVATING EARTHINGS IN THE EXISTING DISTRIBUTION & PRIMARY SS INCLUDING HT LINE EARTHING. TOTAL RENOVATION COMPLETED SO FAR IS 329 NOS

• SOUTHCO HAS PURCHASED 2400 NOS LA & REPLACING ALL THE DEFECTIVE ONE TO AVOID SNAPING OF CONDUCTOR & FAILURE OF TRANSFORMERS

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• SOUTHCO HAS PURCHASED 9000 NOS KIT-KAT FUSES FROM 63 AMPS TO 400 AMPS AND PUTTING IN DTS FOR SAFETY

• SOUTHCO HAS PURCHASED FUSE WIRES FROM 2.5 AMPS TO 200 AMPS A TOTAL OF 5000 KG

• DISTRIBUTION BOXES OF DIFFERENT CAPACITIES ARE INSTALLED ALONG WITH THE NEW SS PROPOSED UNDER SI SCHEME

• 156 NOS OF HELMETS AND 932 NOS OF SAFETY HAND GLOVES HAVE BEEN PROVIDED TO LINE STAFF

• WE ARE PROCURING 200 NOS OF FIRST-AID BOX SHORTLY AND THE TENDER PROCESS COMPLETED

•OUR OFFICERS FROM CORPORATE OFFICE ARE VISITING TO FIELD FOR MONITERING THE QUALITY OF THE CONSTRUCTION AND MAINTENANCE

• 108 NOS OF DISCHARAGE RODS AND 237 NOS OF EARTHING DEVICES HAVE BEEN PROVIDED TO FIELD UNITS FOR SAFETY

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THANK YOU