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DOCUMENT ID: |
6220
Electrical Safety Manual- Non-NRTL Equipment Design
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1.0
Purpose
When it is
necessary for Jefferson Lab to utilize custom electronic/electrical equipment, including (AC utilization equipment) it is done in compliance with “10 CFR
851 – Worker Safety and Health Program.” This is achieved by
assuring that final products meet the intent of applicable electrical safety
standards and are maintained in a safe working condition. This chapter defines
the practices used to achieve this goal.
2.0
Scope
This chapter and its associated appendices, apply to the
construction and modification of electronic/electrical equipment used at
Jefferson Lab. Items acquired from an outside source must meet these standards.
Equipment that has not been altered, and is recognized by a Nationally
Recognized Testing Laboratory-NRTL (e.g.: those that are UL listed), are not
included within the scope of this document.
Equipment
shall be built in compliance with ES&H Manual Supplement Construction and
Modification Requirements for Custom and Non-NRTL Electric Equipment and
documented in accordance with department procedures. The guidelines in this
chapter define responsibilities for those involved with the design and
construction of custom electric equipment.
3.0
Responsibilities
3.1.1
Supervisor/Technical
Representative (TR)/Sponsor
3.1.1.1
Ensure that only qualified workers
design or modify electronic equipment and
the work is accomplished as specified in ES&H 6220- Non-NRTL
Equipment Design and Construction- Manuals Supplement Construction and
Modification Requirements for Custom and Non-NRTL Electric Equipment.
3.1.1.2
Ensure an appropriate level of
review, construction, and modification is incorporated into the work plan.
3.1.1.3
Ensure inspection of final product.
3.1.1.4
Ensure proper configuration management is maintained.
3.1.2
Designers
3.1.2.1
Obtain
appropriate authorization to design or modify equipment.
3.1.2.2
Comply
with appropriate standards or guidance.
3.1.2.3 Reduce hazards by incorporating
engineering safeguards, and reducing mode or class levels.
3.1.2.4 Create and maintain proper
documentation of design in accordance with department procedures. For example:
a. Specifications
b. Design analysis and calculations
c. Drawings
d. Schematics
e. Software
f.
Pressure
system procedures
g. Wiring diagrams
h. Safety Analysis
3.1.2.5 Schedule, perform, and document appropriate
design reviews.
3.1.3
Technicians
3.1.3.1 Make no modifications to any
equipment without appropriate authorization.
3.1.3.2 Prior to modifying any equipment
analyze the hazards to equipment users. See ES&H 6220- Non-NRTL
Equipment Design and Construction- Manuals Supplement Construction and
Modification Requirements for Custom and Non-NRTL Electric Equipment.
3.1.3.3 Ensure appropriate authorization is
received prior to beginning work.
3.1.3.4
Incorporate risk-reduction techniques
during work subject to appropriate review.
3.1.3.5
Follow established quality
procedures.
For example:
a.
Control
of Nonconforming Material or Products Procedure
c.
Material
Identification and Traceability Procedure
d.
Pressure
Systems Quality Procedure
e.
Receiving
Inspection and Acceptance Testing Procedure
f.
Suspect/Counterfeit
Items (S/CI) Identification Procedure
g.
Visual
Examination Procedure for Examiners
3.1.3.6
Build equipment in accordance with
design drawings, including specified materials and components.
3.1.3.7
Perform visual inspection and peer
review prior to completion of work
3.1.3.8
Document or otherwise communicate
“as-built” changes to the Designer per departmental procedures.
4.0
Expectations
4.1 Electronic
Equipment – Best Practices
Often Jefferson Lab has need of unusual electronic equipment which does not meet the standards and listing requirements set forth for industrial applications. In order to ensure that all such equipment is safe in accordance with Jefferson Lab’s acceptable safety standards; best design and construction practices are provided within ES&H 6220- Non-NRTL Equipment Design and Construction- Manuals Supplement Construction and Modification Requirements for Custom and Non-NRTL Electric Equipment. These are to be reviewed and incorporated as applicable into department procedures.
5.0
References
5.1
10 CFR 851 Worker Health and Safety
Program, 2017
5.2
National Fire Protection Association (NFPA) 70, 2017 -
National Electric Code (NEC)
5.3
NFPA
70E, 2015 - Standards for Electrical Safety in the Workplace
5.4
Occupational Safety and Health
Administration (OSHA) Regulation 29 CFR 1910, Occupational Safety and Health
Standards, 2020
5.5
OSHA Regulation 29 CFR 1926,
Regulations for Construction, 2020
5.6
DOE–HDBK-1092, 2013 – Department of Energy
Electrical Safety Handbook
5.7
ES&H Manual
Supplement- Construction and Modification Requirements for Custom and Non-NRTL
Electric Equipment- ES&H Manual 6220 Appendix A
5.8
ES&H
Manual 6230 Electrical Safety Manual Appendices
6.0 Revision Summary
Revision 2.1 07/12/21- Updated hyperlinks.
Revision 2.0 08/20/20- Changed format and updated information.
Periodic Review 11/14/18- no
changes per TPOC
Periodic Review 11/12/15- no
changes per TPOC
Revision 1.1 05/20/12- Periodic triennial review; Updated format
Revision 1.0 05/20/09- Update to reflect current laboratory operations
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ISSUING
AUTHORITY |
TECHNICAL
POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW DATE |
REV. |
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ESH Division |
01/26/2021 |
01/26/2023 |
2.1 |
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