TITLE:

ES&H Manual

 

DOCUMENT ID:

6200 Appendix T2

Electrical Personal Protective Equipment (PPE) Selection Procedure

 

 

1.0             Purpose

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.

2.0             Scope

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).

3.0             Responsibilities

NOTE:     Management authority may be delegated to a task qualified Jefferson Lab employee at the discretion of the responsible manager.

3.1              Everyone at Jefferson

·         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.

·         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.

4.0             Process Steps

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.

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.

5.0             References

·         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

 

 

ISSUING AUTHORITY

TECHNICAL POINT-OF-CONTACT

APPROVAL DATE

REVIEW DATE

REV.

 

 

ESH&Q Division

Tim Fitzgerald

01/31/20

01/31/23

0.5

 

This document is controlled as an on line file.  It may be printed but the print copy is not a controlled document.  It is the user’s responsibility

to ensure that the document is the same revision as the current on line file.  This copy was printed on 2/12/2020.