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6200
Appendix T3 Electrical
Personal Protective
Equipment (PPE) Selection Procedure |
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Jefferson Lab requires the use of electrical protective equipment to protect the worker from harm and appropriate for the work being performed. This procedure complies with the requirements of NFPA 70E – Standard for Electrical Safety in the Workplace regarding personal protective equipment (PPE) requirements when work is performed within a shock approach or arc flash protection boundary.
This document provides guidance to ensure that proper electrical PPE is selected and used while performing electrical work.
NOTE: Management authority may be delegated at the discretion of the responsible manager.
·
Is aware of the electrical hazards in your workplaces.
·
Is aware of shock approach and/or arc flash protection
boundaries.
- Select and use appropriate PPE
while exposed to electrical hazards.
- Wear no conductive articles of
jewelry or clothing that could present an electrical contact hazard.
- Maintained PPE in a
safe, reliable condition and visually inspect it before each use.
3.2 Electrical Safety Engineer (ESE)
· Provides an electrical PPE evaluation when requested, or deemed necessary.
· Administers the lab-wide electrical rated glove change out every six months.
· Determines shock approach and/or arc flash protection boundaries when requested, or deemed necessary.
Individuals follow the process
steps outlined below to determine the appropriate
electrical PPE to be worn in a shock approach or arc
flash protection boundary:
Step 1:
Determine the
Equipment and Task to be
performed and the specific equipment to be worked on (different PPE levels may
be required for different tasks on the same piece of equipment).
Step 2:
Read and
follow the equipment specific label. This will be field marked with the available
incident energy and/or required PPE
level. Go to Step 5.
Alternate
Step 2: If the equipment does not have a label
then follow the equipment label specific of the first upstream over-current
protective device that is providing power to the equipment to be worked
on. Go to Step 5.
SubAlternate
Step 2: If this equipment does not have a label or if
it is a transformer, go to Step 4 – Perform
calculations.
Step 3:
Perform
calculations. (Or contact the Electrical Safety Engineer,
for a field evaluation.)
·
For
systems less than 600 VAC use an Arc
Flash Boundary of four feet.
o
For
systems greater than 600 VAC an Arc
Flash Boundary must be calculated.
·
Refer
to table 130.2(C), of NFPA 70E, for the Restricted
Approach Boundary.
·
Refer
to table 130.7(C)(9), of NFPA 70E, to determine the hazard/risk category of the
work task being performed
·
Refer
to table 130.7(C) (10), of NFPA 70E, to determine the appropriate protective
clothing and personal PPE required to be used while performing the work task.
Step 4:
Don and use appropriate PPE.
If all of the following conditions exist then an Arc Flash Boundary need
not be established.
·
The circuit is rated 240 VAC or less;
·
The circuit is supplied by one transformer; and
·
The transformer supplying the circuit is rated less than
125KVA.
There is still a shock approach
boundary
for systems above 50 VAC or 60 VDC. Refer to NFPA 70E – Table 130.2(C) for the
shock approach boundary.
PPE is inspected, tested, and cared for in accordance with manufacturer’s instructions.
·
OSHA 29
CFR 1910 and 29 CFR 1926
· DOE Electrical Safety Handbook 1092
·
National Electric
Code, NFPA 70
· IEEE C2 NESC, National Electric Safety Code
·
Standards for
Electrical Safety in the Workplace, NFPA-70E
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ISSUING
AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW
REQUIRED DATE |
REV. |
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ESH&Q Division |
10/01/09 |
10/01/12 |
0 |
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