safety while working in electrical system

1. 1
Safety standards: Prevention of
Accidents/Reporting Procedures
Presented By: Amarnath Sadafal
Assistant Engineer
(M&BM) Cell,O/o MD
Govindpura Bhopal

2. 2
• What Does Safety Mean?
Safety means the state or condition of
freedom from danger or risk. Safety can also
be termed as freedom of persons from injury
and of property from damage.
• Development Of Safety
The year 1789 is of great historical
importance. It saw the outbreak of French
Revolution and also ushered in the era of
Industrial Revolution. The philosophy of that
time was that accidents are an inevitable by-
product of industrialization and that worker
is responsible for his own safety. However, in
the year 1833, world’s first Factory’s Act was
enacted in UK. It was an important milestone
in the evolution of the safety. The first
successful Workmen’s Compensation Law was
enacted in the USA in 1911 which was another
leap forward for mankind. The Factory’s Act
and Workmen’s Compensation Act constitute
the first phase of safety.

3. 3
•Safety Provision In Use Of
Electricity
Electrical energy is the most commonly
used form of energy. One cannot
imagine the life without electricity in
modern society. 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 of rupees worth assets to ashes.
It is, therefore, absolutely essential
that one should know what precautions
to take while using electricity.

4. Effect of Current
ELECTRIC SHOCK AND ITS EFFECTS
 In the event of passing of current through the body of a
person, the body tissues / muscles get vibrations and
experience severe pain. The phenomenon is called "Electric-
shock”.
 The resistance of a normal person's body between two hands
is about 1000 ohms, but if both the hands are in wet
condition, then the resistance becomes 150 ohm only. In
case if hands are wet with salt or salty water, then the
resistance becomes 50 ohms only.
 Therefore, in Bathroom or at wet places or during rainy
season, the electric shock will be severe and can cause
fatality.
4
Reasons of Electric Shock :
 Flowing of Electric Charge through the body.
 Electric Voltage.
 The portion of body coming into contact of live wire. (Area
thereof)
 Resistance of human / animal body.
 Period of Contact. Higher the portion or area comes into
contact of Electric Wire, the Electric shock will also be of
that magnitude.

5. Electrical accidents (incoming-Outgoing wounds)
5

6. Types of Accidents
Non-Electrical Accidents Electrical Accidents
6

7. 7
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Classification of Electrical/Non Electrical Accidents

8. 8
STATISTICS OF FATAL ELECTRICAL ACCIDENTS IN MPCZ
0
50
100
150
200
250
18
6
14 14 12 15
9 9
120
97
90
95
152
143
125 129
185
137 133
115
135
237
147
166
Departmental
Employees
Outsiders
Animals

9. 9
STATISTICS OF NON FATAL ELECTRICAL ACCIDENTS
0
10
20
30
40
50
60
70
80
90
52
29
34
45
30
39
36
44
32
42
46
48
67
73
82
60
5
8
6
9
1
8
2 2
Departmental
Employees
Outsiders
Animals

10. 10
10
2
28
40
33
4
10
47
5
0
22
27
22
2
18
42
0
5
10
15
20
25
30
35
40
45
50
Departmental Contractual Outsourced Total Departmental Contractual Outsourced Total
Fatal Non Fatal
2016-17
2017-18
STATISTICS OF FATAL /Non Fatal ELECTRICAL ACCIDENTS IN MPCZ

11. www.mpcz.co.in
11
Safety Manual
Safety Policy of the Company

12. Why, I should not neglect any of the
precaution, before execution of work?
o Negligence while taking permit.
o overhead line crossing to each other.
o Inverter used by LT consumers.
o Misfortune!! Lightening on the
conductor.
o Fault on the transmission line,
inducted in subtansmission line.
o Misfortune!! Bird fault.
o Poor earth resistance, common mesh
earthing, reflected through the
operator
12
Answer: Because , Charge can transit
from any of the unknown situations.
Treat everything as live

13. Indian Electricity Act 2003
Section 53Various provisions in this Act in brief are given
below:
• Section 53 of the Act provides that “The Central
Electricity Authority may in consultation with the
State Government specify suitable measures for:-
 Protecting the public (including the persons engaged
in the generation, transmission, distribution or
trading) from dangers arising from the generation,
transmission, distribution or trading or use of
electricity supplied or installation, maintenance or use
of any electric line or electrical plant.
 Eliminating or reducing the risks of personal injury to
any person, or damage to property of any person or
interference with use of such property.
 Prohibiting the supply or transmission of electricity
except by means of a system which conforms to the
specifications as may be specified.
 Giving notice in the specified form to the
Appropriate Commission and Electrical Inspector, of
accidents and failures of supplies or transmissions of
electricity.
 Specifying action to be taken in relation to any
electric line or electrical plant, or any electrical
appliance under the control of a consumer for the
purpose of eliminating or reducing the risk of
personal injury, or damage to the property or
interference with its use.
 Section 73(c) relates to CEA specifying the safety
requirements for construction, operation and
maintenance electric plants and electric lines.
 Section 161 relates to reporting of accidents and
inquiry of accident.
 Section 162 deals with appointment of Chief
Electrical Inspector and Electrical Inspector.
 Section 185(1) is regarding repeal of the Indian
Electricity Act, 1910, the Electricity (Supply) Act,
1948 and the Electricity Regulatory Commissions Act,
1998.
 Section 185(2) (C) states that Indian Electricity
Rules, 1956 made under Section 37 of the Indian
Electricity Act, 1910 as it stood before such repeal
shall continue to be in force till the regulations under
Section 53 of this Act are made.
13

14. Creation of Safety Zone
14

15. Max. Value of Earth Resistance to be achieved
Equipment to be Earthed Max. Value of Earth Resistance
to be achieved in Ohms
Large Power Stations 0.5
Major Substations 1.0
Small Substations 2.0
Neutral Bushing 2.0
Service connection 4.0
LT LA 4.0
DT structure 5.0
LT Pole 5.0
Factories Substations 1.0
Lattice Steel Tower 3.0
Industrial Machine and Equipment 0.5
* The Earth Resistance depends upon the moisture content in the soil.

16. Electrical Safety
Basic Elements / Safety
Fundamentals:
• Co-operation of all co-
workers is essential to
avoid accidents.
• Unsafe worker is burden
on the Company, as he
may become the cause of
accident to self as well as
to others.
• Use of incomplete or
little knowledge is
dangerous and may invite
accident.
• Accident is the result of
unsafe working condition
and unsafe work.
16
Important Points In Safety
• Safety of the self
• Safety of the Co-workers.
• Safety of the Public
• Safety of the Company's
property
Before starting work, if the
working condition seems to be
unsafe or if there is confusion,
matter should be got clarified
and work taken up.

17. Electrical Safety
Precautions to be taken while working
on lines / equipment:
• Every Electrical line / equipment
should be switched off and line
clear / permit taken before taking
up the work.
• It is essential to get authorized
permit for working on
lines/equipment.
• If the line is under own authority,
then self-permit is to be taken.
• Switching off the feeder /
equipment and proper earthing is to
be ensured as noted in line clear
permit.
• Precautions to be taken while working
on lines / equipment(contd….):
• A.B. Switch should be opened and
locked. If possible watch / ward may
be provided.
• The AB Switch should not be opened on
load.
• After opening the AB Switch, It
should be ensured that the three
blades of AB switch are opened.
• While operating A. B. Switch or other
line equipment ,Hand gloves should
invariably be used.
• Line should be got discharged and
earthed by earth - rod at one pole
before and after the work place,
before starting the work on pole
17

18. Electrical Safety
• Precautions to be taken while
working on lines / equipment
(contd….):
• It should be ensured that:
- all men and material has safely
reached / climbed down to ground
after completion of work.
-No T&P is left on the line and
earth rods are removed
• Safety belt/rope or Zoola should
be used while working
• If one or more phases at
Distribution Box of DTR is made
direct, then working on it is
dangerous. Hence in such case, by
opening the D.O. link, supply to DTR
is switched off and work on LT side
taken up.
• Precautions to be taken while
working on lines /
equipment(contd….)
• If different groups are working at
different places on line at same
time, then clear communication and
understanding should be established
between them about the work.
• Work should not be carried out and
line should not be charged by fixing
some approximate time or by fixing
fictitious codes.
• All the three phases of line should
be made off even if one has to work
on single phase only.
18

19. Electrical Safety
• Precautions to be taken while working on
lines / equipment(contd…..)
• There is danger at place where two
different lines are in vicinity of each
other and permit is taken to work on one
of the lines, because there is possibility of
touching the conductor of live line. Hence
in such cases permit be taken on both the
lines.
• one should not climb on line even for
putting D.O. links or by climbing on
Distribution Box or using only half
operating rod.
• While working, one should not wear
wristwatch or chain (Metallic) on the neck.
• The spots of multiple feeding points or
common street light phase from 2 or 3
T/fs, should be fully known to workers.
while attending fuse off call complaints.
SAFETY T & P
Rubber Hand gloves:
Rubber handgloves are mainly of two types
and used for HT & LT Line respectively.
The handgloves meant for L.T. lines should
not be used for H.T. Line work. Handgloves
should invariably be used for following
works :
o For closing and opening of A.B.
Switches and isolators
o For discharging the HT & LT lines and
equipments using discharge rod and for
Earthing work
o For inserting and taking out of
Distribution box fuse and pole fuse
o For operating transformer D.O. and
Horn -gap fuse
o For mechanically closing and tripping of
circuit breakers.
19

20. Electrical Safety
SAFETY T&P
Safety Precautions for Keeping &
Handling Hand gloves
• Hand gloves are to be used
wherever required.
• Hand gloves should not be folded /
stored with other material.
• T & P or any material should not be
kept inside hand gloves.
• Hand gloves are to be kept clean
and dry. Boric Acid Powder to be
used inside and outside.
• Hand gloves are to be carefully
inspected for any cut or leakage,
etc. before use.
SAFETY T&P
Bamboo-ladder/Insulated ladder:
• Bamboo - ladder to be used for
climbing the pole.
• Ladder shall be of 6 meters length.
• The ladder shall be varnished so as
to keep safe from rain / water.
Metallic colours should never be
used for the ladder.
• Metal - ladder should not be used
unless permitted.
• Only one person shall climb and
work at a time on ladder.
• Damaged ladder to be discarded
20

21. Electrical Safety
SAFETY T&P
Discharge /Earthing Rod:
• The discharge rod shall be used to
discharge the static and induction
charge of the power line after
opening it.
The use of discharge rod safeguards
from all types of back feeding cases /
eventualities such as :
• The line is charged by some
mischievous or unknown person not
having adequate knowledge.
• The area of DTR may be under
shutdown due to some fault, the L.T.
line under DTR is charged from
other source.
Safety T&P:
Maintenance of Discharge Rod
• The rod should not be kept in wet
condition.
• It is to be ensured that the
continuity of all wires of discharge
rod is intact.
• Carbon deposited on Hook of the
rod to be cleaned regularly.
• The continuity of wires to be tested
regularly.
21

22. Electrical Safety
Safety T&P
Method of using Discharge – Rod
• Cleanliness of the wire ends/lugs to
be ensured before use.
• Firm connection of wires with earth
point should be made by nut-bolt.
• Confirmation of the continuity and
good condition of earthing is a must.
• Hand gloves shall be used while
discharging the line by
discharge/earth rod.
• While working on L.T. Line, the
neutral is to be first discharged and
then phases. .
22

23. Electrical Safety
Safety T&P
• The rods shall be kept on line till the
work is completed.
• After completion of work and
climbing down the pole, discharge
rods should be removed one by one
using hand gloves invariably. After
removing all rods, earth connection
shall be removed.
• If it is noticed that some work is
still balance or some T&P, etc. is
left on the line, the workman should
not climb the line unless the line is
discharged again. Any eventuality
may occur within seconds. Hence no
risk should be taken and never do
any work in haste.
Safety T&P:
Insulated T&P:
It is to be ensured that the
insulation of T&P is intact before use.
Insulated T&P means screwdriver, pliers,
tester, etc
Zoola:
Zoola should be always used while
working on pole or D.P. etc. It is to be ensured
that the rope of zoola, thimble, hook, etc. are
in good condition before starting the work.
Safety - Rope:
Sometimes the zoola may break and
worker fall on the ground. Hence while
working on zoola, the worker must use a
safety rope on waist. It is to be ensured that
the knot is tight and other end of this rope
should be wrapped tightly with the pole to
avoid any mishap. The rope must be in good
condition, quality and size.
23

24. Electrical Safety
Safety T&P
• Crash - Helmet:
While working on pole or on D.P., the
nut bolt, clamp, spanner, pliers and other
T&P may fall accidentally on ground on
head /body of the worker working on
ground. Hence the worker should use the
crash helmet as a safety precaution.
• Gumboots:
The gumboots must be used while
patrolling, particularly in the night or rainy
season to safeguard from snakebite
/reptile etc. Also, it shall be used while
operating D.O. Switch / A.B.Switch, etc.
along with handgloves.
24

25. Ist Information of Accident
Departmental Information
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25

26. 2nd Information of Accident
 Performa report
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26

27. 3rd Information of Accident
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27
Detail report Enclosures

28. 28
What is expected from You?
Supervise your line staff in a particular frequency.(Safety Audit)
Facilitate subordinates with T&P, Safety appliances
Knowledge of geographical electrical infrastructure within your jurisdiction .
Reporting of Electrical accidents in proper manner.
Educate outsiders about electrical hazards by various camps.
Maintenance of infrastructure according to regulatory Authority.

29. Thanks
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