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ES&H Manual
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.

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

Supplemental Material:

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 at the discretion of the responsible manager.

Qualified AC Electrical Equipment Worker
  • Ensure training is adequate and current (see 4.1 Qualifications/Requirements).
  • Ensure energized work, other than diagnostics, is authorized by a signed Energized Electrical Work Permit (EEWP) approved by the Laboratory Director.
  • Prior to commencement of work:
    • Complete a Task Hazard Analysis; this includes a pre-work walk down.
    • Received authorization from your AC Electrical Equipment Supervisor.
    • Ensure proper personal protective equipment (PPE) is identified, available, and in good repair.
    • Set-up appropriate boundaries for the work.
AC Electrical Equipment Supervisor/Subcontracting Officer's Technical Representative (SOTRs)
(Minimally trained to the same, or higher, level of those they supervise.)

  • Coordinate outages and alert potentially affected parties of the work to be performed and its probable duration. The preferred notification system is the web-based Utility Outage Management System.
  • Conduct briefings, when appropriate, on specific work hazards, procedures, PPE, control of hazardous energy sources, or any special precautions associated with the planned work.
  • Ensure only Qualified AC Electrical Equipment Worker are assigned to AC electrical equipment work and their training level is consistent with the minimum requirements for the work to be performed. (See 4.1 Qualifications/Requirements.)
Department Managers
  • Ensure training of AC Electrical Equipment Supervisors and SOTRs is current for safety requirements and to appropriate electrical code requirements.
Electrical Safety Engineer
Associate Director/Division Manager
  • Approve Work Control Documents for electrical work.
  • Review, and if acceptable, recommend for approval EEWPs for energized electrical work on electrical equipment performed by department/division or subcontractor Qualified AC Electrical Equipment Worker.
Laboratory Director
  • Approve all EEWPs for work on electrical equipment when de-energizing the equipment is infeasible or introduces additional hazards.


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
  • SAF104 - Lock Tag and Try or equivalent training from their employers (if subcontractors)
  • SAF603A - Electrical Safety Training or equivalent training from their employers (if subcontractors)
  • SAF603N - Arc Flash Training or equivalent training from their employers (if subcontractors)
  • All required PPE for electrical shock and arc hazards is identified and donned.
  • Work must be approved and authorized.
  • Exceptions to the requirements above are allowed if:
    • Equipment is equipped with a plug type power connector; there are no stored energy components; and the plug is disengaged from the receptacle and under control of the worker.
    • Lockout is performed by a qualified electrical worker and the non-electrical work is not exposed (or potentially exposed) to any electrical shock or arc hazards or stored energy hazards. (See NOTE: Below.)

NOTE: Non-electrical workers who, work on or near electrical equipment (e.g. - mechanics, painters, etc), are trained to understand how electrical exposure could occur and how to avoid injury. If Lock, Tag, and Try is required, then those workers receive on-site, job specific training to lockout electrical hazards. A qualified electrical worker performs the Lock, Tag, and Try and applies an Administrative lock and tag on the circuit after they have verified the zero energy state in order to have control over the circuit following the work. This will be witnessed by the non-electrical worker(s). Other workers (non-electrical worker) shall install their own lock/tag on the circuit/device as appropriate. In some cases, the locks may be installed on a group lockout box using the Group Lock, Tag, and Try procedure.

4.1.2 Work on Energized Equipment - Diagnostics Only
Work on energized electrical equipment for the purposes of diagnostics is permitted without an EEWP provided appropriate safe work practices and PPE are used, in accordance with articles 110 and 130 of NFPA 70E.

Work is allowed with the following training and requirements:
  • SAF10 - Lock, Tag, and Try or equivalent training from their employers (if subcontractors)
  • SAF603A - Electrical Safety Awareness or equivalent training from their employers (if subcontractors)
  • SAF603N - NFPA 70E Basic Electrical Safety or equivalent training from their employers (if subcontractors)
  • Demonstration of satisfactory understanding (to person authorizing the work) of the following:
    • Experience with the equipment to be serviced.
    • Proper selection and use of tools and equipment.
    • Proper use of precautionary techniques.
    • Selection and use of appropriate PPE for the voltage and arc flash rating of the equipment to be serviced.
    • Knowledge of safe retrieval techniques for persons coming into contact with electricity.
    • Use of Work Control Documents.
  • Work must be approved and authorized
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 following training and requirements: See ES&H Manual Chapter 6220 Appendix T1 Energized Electrical Work Permit (EEWP) - Instructions for more information.

Document Control:
    APPROVAL DATE:   06/29/15
    REVIEW DATE:  06/29/18
    Periodic Review - 06/29/15 - No changes per TPOC.
    Revision 1.2 - 02/18/13 - Removed SAF105 (CPR) as a required training skill per T. Kujawa.
    Periodic Review - 01/20/12 - Periodic review. Edited format to reflect current template.
    Revision 1.1 - 10/19/10 - Update to clarify content.
    Revision 1.0 - 02/23/09 - Update to reflect current laboratory operations.

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. .