CESU Safe Practice in Power Distribution

7/28/2019 CESU Safe Practice in Power Distribution

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Safe Practice in Power

Distribution

Swapan Dasgupta, CEO, CESU


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Why The Subject Is Important

India

Almost 12 people die due to electrocution every

day .

42 % of total fires occur due to electrical

sources.

8% deaths that occur in factories are due toelectricity


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SAFETY OF PUBLIC

Road Crossing

Tree Touching

Ground Clearance

Building Clearance

Consumer Installations

Unauthorized Connections.

Easy Access Of Public To Utilitys Installations.


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Stealing Directly From Transformer


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SAFETY OF EMPLOYEES

At The Time Of Construction

At The Time Of Operation

At The Time Of Attending Breakdown

At The Time Of Routine Maintenance


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SAFETY OF LINES AND EQUIPMENTS

Relays And Protection Devices

Setting Of Relays

Hot Spot Detection

Line Diagrams: Reliability And Smart Updation

Oil Testing

Logging Operational Parameters

Annunciation System Checking

Earthing


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Why Accidents happen?

Accidents generally happen due to lack of

maintenance, lack of Supervision, lack of knowledge,

over confidence and negligence. Accidents may also

happen due to one or more of the following reasons:

Using improper tools

Improper/non usage of protective devices

Lack of proper instructions and supervision

Mental/physical condition of the employee Poor Judgment


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Continued-

Unsafe condition: The conditions with potential ofcausing injury to a person or damage to equipmentare called Unsafe Conditions.

Examples

Unguarded machines. Defective machine.

Unsafe design/construction.

Improper illumination.

Poor house-keeping. Lack of proper tools.

Slippery floor.


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Indirect Causes Of Electrical

Accidents

a) Lack of

knowledge and

skill:-

Incorrect

knowledge

Incomplete

knowledge.

Unskilled/lowdegree of skill.

Misunderstanding

job instructions.

b) Improper

Physiological/Anatomica

l characteristics.

This relates topersons of:-

Poor eye-sight.

Hard of hearing.

Over-age.

IllnessAllergic.

Intoxication

Improper Psychological

Characteristics.

c) Persons who

are:

Arrogant.

Lazy.

Fearful.

Nervous.

Egoistical.

Absent-minded.

Over-confident.

(Contributing causes which give rise to direct causes)


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Cost of Accidents

Direct Cost-

Cost of medical treatment, Compensation for loss of earning capacity/ permanent

disability/fatality

Indirect Cost-

Production loss, Transportation charges, Time loss by co-workers, Idle time ofmachine.

Damage to equipment, Loss of morale of workers in unit, Loss of time supervisory

personnel in submitting report/accident analysis, Loss of efficiency of injured persons

after reporting for duty, Administrative expenses, Legal/Court expenditure,

Company/s reputation at stake.

Cost of training the substitute employee, Investigation by statuary authorities,Business interruption/failure to meet schedule, Penalties imposed by statuary

authorities

All injury cases, weather minor or major, result in financial loss to the organization. In

addition to irreparable loss for the family members in case of fatal accident.

Total Cost of Accidents = Direct Cost + Indirect Cost

Indirect Cost usually varies from 5 to 11 times that of direct cost


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Safety Awareness In Use Of Electricity

Electrical energy is the most commonly used form ofenergy.

One cannot imagine the life without electricity in modernsociety.

Using electricity is very simple, but, little does one know

about how electricity really works. Such a situation is not good because electricity is a good

servant but a very bad master.

It can cause instantaneous death, life long disability due

to severe burns or devastating fires turning crores ofrupees worth assets to ashes.

It is, therefore, absolutely essential that one should knowwhat precautions to take while using electricity.


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SAFETY EDUCATION & AWARENESS

Analysis Of Electrical Accidents

Sharing The Case Study Report Of Each Accident Among TheWorlmen Regularly.

Documentation Of Each Accident

Building Up Of Knowledge Bank On Electrical Accidents.

Regular Training To Field Staff

Awarding Employees For Exhibiting Safety Sense And Norms In WorkPlace.

Conducting Quizes On Safe Practices Among Discom Employees.


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Continued-

Unauthorized persons shall not attempt replacement oftransformer fuses

Other than utility employees shall not try to replace streetlights or set right service wires

Inform nearest utility office if loose or hanging wires arenoticed

While drilling bore wells ensure that the casing pipes donot touch live wires while they are being lifted up.

Do not go near the Distribution transformers

Do not touch low lying or snapped conductor Do not lean against electric poles

Do not stand beneath overhead lines while heavy windsare blowing


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Electrical Safety Work Practices

Some of the important electrical safety work practices are given below:

Ensure that operating procedures are up to date and appropriate for conditions.

Evaluate circuit information drawings.

Determine degree and extent of risks involved.

Comply with minimum clearances when working around electrical power lines orother exposed conductors.

Always wear safety glasses and a hard hat when working on live circuits.

Use electrically insulated tools.

Use electrically insulated gloves.

Test dates for integrity of equipment and protective clothing - independent safetylab.

Wear required personal protective clothing (i.e., long sleeve shirt and long pants)-flame resistant materials for clothing (different weights for protection dependent on

fault levels and clearing times)


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Your hands are your most valuable tools. Protect them by wearing appropriate safety gloves.Before using, inspect the gloves for signs of wear and tear and other damage.

Evaluate personnel qualifications.

Use ladders with nonconductive side rails if there is any possibility the ladder could contactexposed energized parts.

Follow lock-out tag-out procedures.

Inspect all extension chords for wear and tear.

Never drape electrical chords over heat sources.

Never store flammable liquids near electrical equipment, even temporarily.

Be aware of special training requirements.

Motors with thermal protection can restart without warning, always lockout the motor beforeworking on it.

Only qualified personnel should perform maintenance, inspection and repairs on any electricalequipment.

Electrical Safety Work Practices


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SAFETY ITEMS FOR

EMPLOYEES


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CESUS INITIATIVE ON SAFETY

CESU is insisting for AB cable for LT extension

Insisting Linemen to use Helmet, Safety Shoes andGloves while on work.

High voltage detectors have been provided to fieldmaintenance teams.

Over loaded transformers are upgraded or additionaltransformers are installed promptly in order to ensuresafety of equipments.

All the Divisional Engineers are instructed to visit the33/11 kv sub stations at least once in a week to ensure

safe operation and maintenance of the sub stations. House keeping competition has been initiated among the

Divisional Engineers to ensure quality and safe operationof Sub stations.


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Documents

CESU Safe Practice in Power Distribution