UFC 4-211-01N
25 October 2004
fixture and lamp types to keep maintenance inventories to a minimum. Take into
consideration the reflectance of wall and floor surfaces, especially in hangar (OH)
spaces.
7-7.1.1
Considerations. Consider the following lighting options:
Multiple switching of fixture groups and or lamps.
Occupancy sensors in restrooms, closets and other normally
unoccupied areas.
Daylight sensors and controls.
Design to conserve energy, but provide a pleasant and comfortable
work environment.
7-7.2
Exterior Lighting. Exterior lighting should use high-pressure
sodium lamps where practical and should be in accordance with IESNA Lighting
Handbook. Provide a photoelectric control switch for exterior lighting when all
night lighting is required for safety or security reasons. Use photoelectric
controls in conjunction with programmable lighting contactors where individual or
groups of lighting can be turned off at specific times after dark.
7-8
GROUNDING. Provide the maintenance hangar with flush
mounted, floor power ground receptacles, each with a 19 mm (3/4-inch) diameter
ground rod, located at a minimum of 7.3 m (24 foot) centers across the centerline
of the OH space. Locate additional power ground receptacles around dedicated
aircraft parking areas to facilitate the use of grounding connections. When
aircraft are parked outside of the hangar, provide static ground receptacles on
parking aprons. Resistance to ground for ground power must not exceed 10
ohms maximum, and for static ground, must not exceed 10,000 ohms in
accordance with MIL-HDBK-274 (AS), Electrical Grounding for Aircraft Safety
and with NAVSEA OP5, Ammunition and Explosives Ashore Safety Regulations
for Handling, Storing, Production, Renovation and Shipping. Connect ground
receptacles together with No. 1/0 AWG minimum bare copper below the hangar
floor and connected to the facility grounding system. See Figure 7-1 for typical
power grounding details.
7-9
LIGHTNING PROTECTION. Where weapons handling operations
are expected, provide lightning protection in accordance with NAVSEA OP-5,
Ammunition and Explosives Ashore Safety Regulations for Handling, Storing,
protection in accordance with NFPA 780, Installation of Lightning Protection
Systems and MIL-HDBK 1004/6 Lightning Protection.
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