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DOE-HDBK-1092-98
10.9.3 WORK ON ENERGIZED OR DE-ENERGIZED ELECTRICAL
EQUIPMENT
Unless explicitly stated otherwise in this section, all work on energized/de-energized equipment will
conform to Section 2.0, "General Requirements."
10.10 REQUIREMENTS FOR SPECIFIC R&D EQUIPMENT
Electrical equipment and components used in research may pose hazards not commonly found in
industrial or commercial facilities. Special precautions are required to design, operate, repair, and
maintain such equipment. Electrical safety and personnel safety circuits (e.g., interlocks) are covered
in this section as a guide to reduce or eliminate associated hazards. Training and experience in the
specialized equipment are necessary to maintain a safe workplace.
All personnel involved with research electrical equipment should be trained and be familiar with the
hazards they may encounter in the workplace. Only qualified electrical personnel should design,
install, repair, or maintain electrical research equipment or components. Safety-related design,
operation, and maintenance techniques should be incorporated into all new or modified equipment.
Existing equipment should be modified when necessary to ensure safety. Equipment for which
specific standards are not available should be constructed according to the principles of established
standards, as determined by the AHJ.
Capacitors and inductors are used in research apparatus in special configurations as well as in their
standard configurations. The design, operation, and maintenance of research apparatus using
capacitors and inductors in these special configurations require that special consideration be given
to the safety of both personnel and equipment.
10.10.1 CAPACITORS
This section covers capacitors that are used in the following typical R&D applications:
1. Energy storage
2. Voltage multipliers
3. Filters
10.10.1.1 HAZARDS
Examples of capacitor hazards include:
1. Capacitors may store and accumulate a dangerous residual charge after the equipment has
been de-energized. Grounding capacitors in series may transfer rather than discharge the
stored energy.
10-22


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