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Title: Lessons Learned "Establishing an Electrically Safe Work Condition" Specifically related to Racking Electrical Breakers

Abstract

During low voltage electrical equipment maintenance, a bad breaker was identified. The breaker was racked out from the substation cubicle without following the hazardous energy control process identified in the Integrated Work Document (IWD). The IWD required the substation to be in an electrically safe work condition prior to racking the breaker. Per NFPA 70E requirements, electrical equipment shall be put into an electrically safe work condition before an employee performs work on or interacts with equipment in a manner that increases the likelihood of creating an arc flash. Racking in or out a breaker on an energized bus may increase the likelihood of creating an arc flash dependent on equipment conditions. A thorough risk assessment must be performed prior to performing such a task. The risk assessment determines the risk control measures to be put in place prior to performing the work. Electrical Safety Officers (ESO) can assist in performing risk assessments and incorporating risk control measures.

Authors:
 [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1408852
Report Number(s):
LA-UR-17-30354
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; Occupational Safety and Training; Electrical Safety

Citation Formats

Martinez, Tommy Robert, Romero, Philbert Roland, and Garcia, Samuel Anthony. Lessons Learned "Establishing an Electrically Safe Work Condition" Specifically related to Racking Electrical Breakers. United States: N. p., 2017. Web. doi:10.2172/1408852.
Martinez, Tommy Robert, Romero, Philbert Roland, & Garcia, Samuel Anthony. Lessons Learned "Establishing an Electrically Safe Work Condition" Specifically related to Racking Electrical Breakers. United States. doi:10.2172/1408852.
Martinez, Tommy Robert, Romero, Philbert Roland, and Garcia, Samuel Anthony. Thu . "Lessons Learned "Establishing an Electrically Safe Work Condition" Specifically related to Racking Electrical Breakers". United States. doi:10.2172/1408852. https://www.osti.gov/servlets/purl/1408852.
@article{osti_1408852,
title = {Lessons Learned "Establishing an Electrically Safe Work Condition" Specifically related to Racking Electrical Breakers},
author = {Martinez, Tommy Robert and Romero, Philbert Roland and Garcia, Samuel Anthony},
abstractNote = {During low voltage electrical equipment maintenance, a bad breaker was identified. The breaker was racked out from the substation cubicle without following the hazardous energy control process identified in the Integrated Work Document (IWD). The IWD required the substation to be in an electrically safe work condition prior to racking the breaker. Per NFPA 70E requirements, electrical equipment shall be put into an electrically safe work condition before an employee performs work on or interacts with equipment in a manner that increases the likelihood of creating an arc flash. Racking in or out a breaker on an energized bus may increase the likelihood of creating an arc flash dependent on equipment conditions. A thorough risk assessment must be performed prior to performing such a task. The risk assessment determines the risk control measures to be put in place prior to performing the work. Electrical Safety Officers (ESO) can assist in performing risk assessments and incorporating risk control measures.},
doi = {10.2172/1408852},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {11}
}

Technical Report:

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