Gatehouses at entrances should have a low level of interior illumination, enabling guards to see approaching pedestrians and vehicles. Where lighting is necessary in other open yards, illumination will not be less than 0.2 foot-candle at any point. Lighting units are placed in outdoor storage spaces to provide an adequate distribution of light in aisles, passageways, and recesses to eliminate shadowed areas where unauthorized persons may hide. Illuminating both water approaches and the pier area safeguards piers and docks located on an installation. The area beneath the pier floor will be lit with small wattage floodlights arranged on the piling.
Movable lighting is recommended as a part of the protective lighting system for piers and docks.
Wiring Systems 5-18. The wiring circuit should be arranged so that failure of any one lamp will not leave a large portion of the perimeter line or a major segment of a critical or vulnerable position in darkness. Another advantage to underground wiring is reduced effects from adverse weather conditions. Periodic inspections will be made of all electrical circuits to replace or repair worn parts, tighten connections, and check insulation. Keep fixtures clean and properly aimed.