|Chapter 6220 AC Electrical Equipment Safe Work Program|
This chapter is written to outline Jefferson Lab's AC Electrical Equipment Safety Work Program. Its associated appendix provides the procedures used to implement the program to satisfy the requirements of 10 CFR 851-Worker Safety & Health Program.Scope
All work on AC electrical equipment and/or building services electrical equipment is performed according to the policies and procedures contained in this chapter.
This program satisfies applicable federal, state, and local requirements as outlined in ES&H Manual Chapter 2410 Appendix T1 Hazard Issues List.
Work performed on AC electrical equipment exposes workers to potential electrical hazards that may result in serious injury or death. These hazards include; shock, arc flash, arc blast and other physical injury due to reactions to unexpected energy release. This chapter provides training requirements, worker qualifications, and basic work rules, which must be followed when doing work on electrical equipment, based on National Fire Protection Association (NFPA) 70E and Occupational Safety and Health Administration (OSHA). Information on the use of work planning, and Work Control Documents is also addressed.
T1 Energized Electrical Work Permit (EEWP)
In accordance with Occupational Safety and Health Administration (OSHA) 29 CFR 1910.333(a) and National Fire Protection Association (NFPA) 70E 110.8, work on energized equipment is only allowed when de-energizing the equipment either introduces additional or increased hazards; or it is infeasible to perform the work de-energized. EH&S Manual Chapter 6220 Appendix T1 Energized Electrical Work Permits (EEWP) provides requirements for developing an Energized Electrical Work Permit (EEWP) to justify the need to perform this type of work.
Forms: Energized Electrical Work Permit Form
NFPA 70E - Standards for Electrical Safety in the Workplace
NFPA 70 - National Electric Code
OSHA Regulation 29 CFR 1910 Subpart S and 29 CFR 1926 Subpart K
DOE Electrical Safety Handbook
Management authority may be delegated to a task qualified Jefferson Lab employee at the discretion of the responsible manager.
Qualified AC Electrical Equipment Worker
AC Electrical Equipment Supervisor/Subcontracting Officer's Technical Representative (SOTRs)
(Minimally trained to the same, or higher, level of those they supervise.)
Electrical Safety Engineer
Associate Director/Division Manager
Work is only performed on de-energized AC electrical equipment unless it is for diagnostic purposes (4.1.2 Work on Energized Equipment: Diagnostics Only) or for work approved by the Laboratory Director (4.1.3 Work on Energized Equipment: EEWP Required Work).
The extent of the hazard associated with AC Electrical Equipment is determined by the voltage (electrical shock) and arc flash rating of the equipment in accordance with NFPA 70E. In order to ensure safe, reliable operation of equipment, only qualified persons are authorized to install, repair or modify electrical distribution equipment. Listed below are the minimum requirements for performing this type of work. Supervisors/SOTRs may specify more stringent requirements.
4.1.1 For Work on Electrically Safe Equipment - AC Electrical Equipment fully de-energized
4.1.2 Work on Energized Equipment - Diagnostics Only
4.1.3 Work on Energized Equipment - EEWP Required Work
EEWP required work is defined as manipulative operations on an energized circuit. Work on energized electrical equipment is only permitted with an EEWP signed by the Laboratory Director. Work is allowed with the above training list complete and the following requirements:
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