Electrical Hazards

1. Nova Scotia Power Inc.
Electrical Hazards Presentation
General Presentation
Presenter: Paul Breski

2. 2
Why is this session
important? ……

3. 3
……… For Your Safety!

10. Effects of Current Flowing
Through the Human Body
• Milliamps Amps Result
• 1 0.001 Tingling Sensation
• 1-10 0.001 – 0.010 Sensation of Shock
• 5-25 0.005 – 0.025 Painful Shock /
Muscular Contraction
• 25 PLUS 0.025 PLUS Severe Muscular Contraction
/ Breathing Problems
• 50 – 200 0.050 – 0.20 Ventricular Fibrillation
• 200 0.20 Heart Stoppage

15. NS Regulations
15
•OVERHEAD
POWER LINES
•126 NO PERSON
SHALL CARRY OUT
WORK THAT MAY
BRING A PERSON OR
OBJECT CLOSER
THAN 6.0 M TO AN
OVERHEAD
ENERGIZED POWER
LINE OR POWER LINE
EQUIPMENT WHERE
THE VOLTAGE OF THE
OVERHEAD
ENERGIZED POWER
LINE IS NOT KNOWN
TO THE PERSON
CARRYING OUT THE
WORK.

16. Underground Power Lines
153 (1) In this Section,
(a) “utility line” means underground electrical,
water, telephone, gas or other
utility line or piping; and
(b) “physical limit” means the general location
on the utility line where the
utility’s responsibility for the utility line ends.
(2) Where the location of any utility line is likely
to endanger a person at a workplace,
an employer must ensure that before beginning
an excavation or trench the utility that owns
or operates the utility line is contacted in
order to have the utility clearly locate and
mark the utility line to the physical limit of the
utility line.
16
NS Regulations

17. 17
25000v Duct Bank
Contact

18. Customer Owned
Secondary
18
•153(5) WHERE A
UTILITY STOPS
LOCATING AND
MARKING A UTILITY
LINE BECAUSE IT HAS
REACHED THE
•PHYSICAL LIMIT OF
THE UTILITY LINE BUT
THE UTILITY LINE
CONTINUES, THE
EMPLOYER MUST
ENSURE THE
REMAINDER OF THE
UTILITY LINE IS
LOCATED AND
MARKED BY A
COMPETENT PERSON.

20. 20
Safe Clearance Report

21. 21
Safe Clearance Report

26. Emergency Procedures
for Contacts
26
STAY IN YOUR VEHICLE
AND CALL FOR HELP -
911(YOU ARE SAFE FROM
ELECTROCUTION)
KEEP CO-WORKERS AND
THE PUBLIC AWAY FROM
YOUR VEHICLE
IF YOU MUST EXIT THE
VEHICLE BECAUSE OF
OTHER CIRCUMSTANCES:
- JUMP CLEAR WITH BOTH
FEET TOGETHER NOT
TOUCHING ANY OTHER
PART OF THE VEHICLE
- SHUFFLE WITH BOTH FEET
TOGETHER AWAY FROM
THE SCENE UNTIL YOU ARE
AT LEAST 20 METRES AWAY

27. Emergency Procedures
for Vehicle Contacts
27
TIRES ARE NOT INSULATORS
HIGH VOLTAGE ELECTRICAL
CONTACT MAY CAUSE
SEVERE INTERNAL AND
EXTERNAL BURNING OF THE
RUBBER. THE TIRE COULD
FAIL IMMEDIATELY, ONE HOUR
LATER OR AFTER SEVERAL
DAYS, DEPENDING ON THE
TYPE OF DAMAGE DONE
ALLOW TIRES TO COOL FOR
AT LEAST 1 HOUR BEFORE
INSPECTION BY A QUALIFIED
TIRE FACILITY
INSPECT THE VEHICLE’S
HYDRAULIC & COMPUTER
EQUIPMENT., ETC.
DO NOT DRIVE THE VEHICLE
BEFORE HAVING IT
THOROUGHLY INSPECTED BY
A COMPETENT SERVICE
PROVIDER!

30. End of Presentation
• Questions or Discussion