TITLE:

ES&H Manual

 

DOCUMENT ID:

6200 Appendix T5

Electrical Hazard Labeling

 

 

1.0          Purpose

 

Jefferson Lab recognizes that electrical equipment may require examination or diagnostics work (troubleshooting) while energized.  To ensure the safety of qualified workers authorized to perform such activities, these items are labeled to warn of their potential shock and electric arc flash hazards. 

 

This appendix provides the process steps for identifying equipment which needs labeling; clarifies Jefferson Lab’s labeling requirements; and gives examples of the most common labels used.

 

2.0          Scope

 

Jefferson Lab applies the following considerations to determine its electrical hazard labeling requirements:

·       NFPA-70E (2004) –  considers all potentials > 50Vac or 60Vdc to constitute a shock hazard.

·       NFPA-70E (2004) –  considers all circuits capable of producing an arc flash of incident energy > 1.2 cal/cm2 at normal working distance (18”) to constitute an arc flash hazard requiring Personal Protective Equipment (PPE).

 

3.0          Responsibilities

 

3.1            Anyone at Jefferson Lab

·       Request an electrical hazard evaluation for a piece of electrical equipment.

·       Request update, repair, or maintenance to an electrical hazard label.

 

3.2            Facility Management Electrical Engineering

·       Maintain the one-line and arc flash hazard analysis of the lab’s distribution system down to the lowest panelboard level or large utilization equipment if connected.

 

3.3            ESH&Q Electrical Safety Engineer

·       Provide electrical safety hazard analyses for unlabeled equipment upon request.

 

4.0          Process Steps

 

4.1            Electrical Hazard Evaluation

Anyone at Jefferson Lab may request an electrical hazard evaluation for a piece of electrical equipment.   New equipment requiring labels should be coordinated well in advance of installation so proper labeling can be evaluated and prepared.

 

Contact the Electrical Safety Engineer and provide the location of the electrical hazard/equipment needing review.

o   If it is determined that the equipment requires a hazard label the Electrical Safety Engineer will proceed with this activity.

 

4.2            Update or Replacement of Label 

Anyone at Jefferson Lab may request update or replacement to an electrical hazard label.

 

Contact the Facility Management Electrical Engineer and provide the location of the electrical hazard/equipment needing review, or submit a Facilities Management service request via Work Request System.

o   If it is determined that the label is defective/inferior the Facility Management Electrical Engineer will rectify the situation.

 

4.3            Example of Arc Flash Hazard Identification labels at Jefferson Lab

 

 

  

Field marked label to warn qualified persons of potential shock hazard.

 

 

 

 

Field marked label to warn qualified persons of potential electric arc flash and shock hazards.

 


 

This label’s information includes arc flash boundary distance, incident energy level, Hazard Risk Category for PPE, electrical glove class, voltage level, shock approach boundaries, equipment identification name and the equipments feed source.  If a hazard analysis label is not present, and work is to be performed on the equipment, then refer to ES&H Manual Chapter 6200 Appendix T3 Electrical Personal Protective Equipment (PPE) Selection Procedure for further guidance or contact the ESH&Q ESE.

 

 

5.0          Reference

 

·       Standards for Electrical Safety in the Workplace, NFPA-70E (2004)

 

6.0          Revision Summary

 

Revision 1.4  11/14/13 Changed review required date from 08/01/16 to coincide with main chapter review date.

Revision 1.3  08/01/13 Periodic Review; no substantive changes required.

Revision 1.2  01/30/13 Added video link to Electrical Hazard Identification Label.

Revision 1.1  12/10/12 Added sample “Caution” Label.

Revision 1.0  05/10/12 Updated to reflect current laboratory operations.

 

 

ISSUING AUTHORITY

TECHNICAL POINT-OF-CONTACT

APPROVAL DATE

REVIEW REQUIRED DATE

REV.

 

 

ESH&Q Division

Todd Kujawa

05/10/10

10/31/16

1.3

 

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 11/14/2013.