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6200 Appendix T2 Electrical Personal Protective
Equipment (PPE) Selection Procedure |
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Jefferson Lab requires the use of appropriate electrical protective equipment to protect the worker from harm while work is being performed. This procedure complies with the requirements of NFPA 70E – Standard for Electrical Safety in the Workplace regarding personal protective equipment (PPE) requirements for when work is performed within a shock and/or an arc flash protection boundary.
This document provides guidance to ensure that the
appropriate electrical PPE, for the assigned task, is selected
and used while performing electrical work.
PPE is the last line of defense in protecting from an
electrical hazard before an incident happens and therefore ranks as the lowest
level of control for reducing the risk. The most effective way to reduce the
risk associated with an electrical hazard is elimination (working on
de-energized systems).
NOTE: Management
authority may be delegated to a task qualified
Jefferson Lab employee at the discretion of the responsible manager.
·
Be aware of the electrical hazards in your workplace. Stay clear
of electrical hazard boundaries that are identified by
red with white stripe tape.
3.2
Qualified Individuals
·
Establish and monitor 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.
- Do not wear any fabric underlayers
next to the skin that are considered to be metable fibers such as acetate,
nylon, polyester, polypropylene, and spandex while performing work inside
the arc flash boundary.
- Ensure PPE is inspected, tested, and cared for in
accordance with manufacturer’s instructions before each use:
·
Any
damaged PPE shall be discarded and replaced.
·
Any
PPE found outside its maximum test interval date shall not be
used and replaced with PPE that is within its testing interval date.
·
When
arc-rated clothing is cleaned, manufacturer’s
instructions shall be followed.
o
An
employee can self-launder their arc rated clothing or make
arrangements with the Electrical Safety Engineer to have it cleaned at a
commercial laundry site.
3.3
Electrical
Safety Engineer (ESE)
·
Provide
an electrical PPE evaluation, upon request, for
shock and arc flash hazards.
·
Provide
electrical PPE upon request/need to lab employees.
·
Administer
the lab-wide electrical rated glove change out every six months.
·
Provide
a means for cleaning/laundering arc-rated clothing.
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 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:
Refer
to the equipment specific arc flash and shock hazard label on the equipment to be worked on. If the equipment does not have a label, go to Step 6.
Step 3:
Determine
the Approach Boundaries for shock protection with using the nominal system
voltage as displayed on the arc flash and shock hazard label. Refer to table
130.4(D)(a) for alternating current systems &
table 130.4(D)(b) for direct current systems for the approach boundaries to
energized electrical conductors or circuit parts for shock protection.
·
Establish
shock and/or arc flash boundaries at correct distances with ES&H approved
boundary tape.
·
When
crossing the limited approach boundary, where circuit parts greater than 50
volts are exposed, then shock protection PPE shall be worn; the PPE rating
shall be equal to or greater than the exposed voltages.
Step 4:
Determine
the Approach Boundary for arc flash protection by referring to the calculated
distance displayed on the arc flash and shock hazard label.
·
When
crossing the arc flash boundary where the calculated incident energy is greater
than 1.2cal/cm^2 then arc rated clothing shall be
worn; the arc flash rating of the PPE shall be equal to or greater than the
incident energy rating (cal/cm ^2) displayed on the arc flash and shock hazard
label.
Step 5:
Go
to Step 9.
Step 6:
Determine
the Approach Boundaries for shock protection with using the nominal system voltage of the
equipment. Refer to table 130.4(D)(a) for alternating
current systems & table 130.4(D)(b) for direct current systems for the
approach boundaries to energized electrical conductors or circuit parts for
shock protection.
·
Establish
shock boundary at the correct distance with ES&H approved boundary tape.
·
When
crossing the restricted approach boundary, where circuit parts greater than 50
volts are exposed, then shock protection PPE shall be worn; the PPE rating
shall be equal to or greater than the exposed voltages.
Step 7:
Determine
the arc flash PPE category of the work task being performed.
Refer to table 130.7(C)(15)(A)(b) for arc-flash hazard
categories for alternating current systems and table 130.7(C)(15)(B) for
arc-flash hazard categories for direct current systems.
Step 8:
Refer
to table 130.7(C)(16) for a list and rating of the PPE
to be worn for each arc flash PPE category.
Step 9:
Inspect
and don the appropriate PPE.
·
Meltable fibers such as acetate, nylon,
polyester, polypropylene, and spandex shall not be permitted
in fabric underlayers (underwear) next to the skin.
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NOTE: PPE is the last line of
defense in protecting an employee from an electrical hazard before an
incident happens. The potential electrical hazards are electrical shock, arc
flash, arc blast, and burns from hot electrical equipment. Electrical PPE
does not protect against arc blast and thermal burn hazards. |
· NFPA 70E – Standards for Electrical Safety in the Workplace
· NFPA 70 – National Electric Code
·
OSHA
Regulation 29 CFR 1910 and 29 CFR 1926
·
DOE Electrical Safety
Handbook
6.0
Revision Summary
Revision 0.5 – 01/31/20 – Updated Responsibilities and Process Steps 3 and 6 to include establishing shock boundaries at the correct distance per CATS#NE-2019-05-04-01and CATS#NE-2019-05-08-01
Revision 0.4 – 11/14/18 – Developed process for laundering arc rated PPE per CATS#STR-2017-12-04-02; deleted reference to NFPA-70E (2004 edition) per CATS# STR-2017-12-06-01; updated 3.0 Responsibilities; updated 4.0 Process Steps; updated 5.0 References
Periodic Review – 10/05/16 – No changes per TPOC
Revision
0.3 – 11/03/14 – Edits
per T.Kujawa with no substantive changes
Revision 0.2 – 11/14/13
– Changed review
required date from 07/31/16 to coincide with review date of main chapter.
Revision 0.1 – 07/31/13
– Periodic Review; clarified
purpose, scope, responsibilities, and process steps; added new responsibility
for Facilities Management Electrical Engineer; updated references; added note
and revision summary.
Revision
0.0 – 10/01/09 – New
content written to reflect current laboratory operations
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ISSUING
AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW DATE |
REV. |
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ES&H Division |
01/31/20 |
01/31/23 |
0.5 |
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