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14.2.1. If live electrical maintenance or repair work must be performed, special insulated equipment shall be provided.
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14.2.2. Special insulated equipment includes, but is not limited to, the following:
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14.2.2.1. Insulated hook sticks for opening and closing disconnect switches.
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14.2.2.2. Insulated fuse sticks for removing and installing cartridge-type fuses.
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14.2.2.3. Rubber insulating sleeves and gloves.
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14.2.2.4. Rubber insulation floor mats.
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14.2.2.5. Rubber insulating line conductor hose.
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14.2.2.6. Dielectric hard hats.
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Electrical Systems Procedures |
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14.3.1. Procedures shall be written for all electrical maintenance and repair work.
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14.3.2. Procedures shall include, but not be limited to, the following topics:
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14.3.2.1. Tagging and locking out control switches.
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14.3.2.2. Use of approved non-conductive fuse pullers.
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14.3.2.3. Provision and use of PPE.
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14.3.2.4. Grounding of equipment and personnel.
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14.3.2.5. Use of the buddy system (mandatory when working on energized equipment and circuits).
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14.3.2.6. Safety precautions to be followed when working on energized equipment and circuits.
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14.3.2.7. Fire protection and equipment.
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14.3.2.8. Knowledge of resuscitation procedures.
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14.4.1. Grounding Systems Tests
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14.4.1.1. Grounding Systems General Test Requirements
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14.4.1.1.1. Grounding system tests for lightning protection, electrical fault protection, and static protection systems shall be performed for all facilities and/or locations (including launch complexes and integrated rocket checkout facilities) used to store, handle, or process ordnance or liquid propellants.
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14.4.1.1.2. Facility operators and payload projects shall inspect their portable and movable equipment connections to ground before starting operations each day the equipment is to be used.
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14.4.1.2. Ground Systems Test Plan and Test Frequency Criteria
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14.4.1.2.1. A floor plan layout showing all grounding system test points shall be developed by the facility operator and/or the payload project.
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14.4.1.2.2. Lightning and grounding systems shall be tested in accordance with the responsible facility’s approved procedure and for Air Force facilities with AFI 32-1065.
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14.4.1.2.3. Based on the floor plan, the following tests shall be conducted:
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14.4.1.2.3.1. Lightning protection system resistance to ground shall be tested annually to the following criteria:
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14.4.1.2.3.1.1. Ten ohms or less for the counterpoise system.
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14.4.1.2.3.1.2. Ten milliohms from the terminal to the counterpoise system.
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14.4.1.2.3.2. The lightning protection system shall be inspected visually and mechanically twice a year.
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14.4.1.2.3.3. The facility static/electrical ground system resistance shall be tested annually to a criteria of 10 ohms or less using the methods of measuring resistance to earth described in ANSI/IEEE-142.
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14.4.1.2.3.4. Portable and movable facility equipment connections to the facility ground system shall be visually inspected before each use and tested every two months to a criteria of one ohm or less.
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Grounding Test Preparations. During the grounding test, ground support equipment and flight hardware containing hazardous commodities may be disconnected but do not have to be removed from the facility.
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14.4.1.2.3.5. Conductive floors shall be visually inspected and tested twice a year to the requirements of AFI 32-1065, Paragraph 13.4. Hazardous commodities shall be removed before testing.
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14.4.1.2.3.6. All resistance measurements shall be taken with a currently calibrated instrument in accordance with a Range Safety approved procedure.
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14.4.1.2.3.7. Measuring devices such as megohm meters (meggers) shall be current-limited by the use of fuses or equivalent devices when the facility contains electrically connected EEDs.
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14.4.1.2.3.8. Test and inspection results shall be provided to the facility custodian and be available at the facility.
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14.4.2. Electrical Equipment Inspection. Before first use or first use after repair, electrical distribution equipment shall be inspected for compliance with NFPA 70 and NFPA 70E.
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14.4.3. Electrical Equipment Maintenance and Testing
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14.4.3.1. Electrical equipment shall be maintained in accordance with AFJMAN 32-1083, Facilities Engineering - Electrical Interior Facilities, and NFPA 70E.
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14.4.3.2. Conductors with worn, abraded, or defective insulating material shall be repaired or replaced before the circuit being energized.
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14.4.3.3. In addition to maintenance requirements in AFJMAN 32-1083, Chapter 15, electric motors shall be properly maintained and excess dust and oil shall be removed from motors by vacuum cleaning or wiping.
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14.4.3.4. Electrical system interior inspection and testing of wiring, power circuit breakers, and protective relaying shall be accomplished in accordance with AFJMAN 32-1083, Chapter 14 and 15 with testing intervals not to exceed two years.
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