Interior Lighting

DOE-HDBK-1132-99

2.4

Interior Lighting .

Fluorescent and high-intensity discharge (HID) lamps are preferred. When HID

lighting is used indoors, color rendition effects on visual and health safety should

be evaluated. Glare and shadows in fixture layouts should be minimized.

Additional standby lighting may be necessary to meet emergency lighting

requirements. The stroboscopic effect from discharge lighting should be

corrected, especially in areas where rotating machinery is present. Fluorescent

or HID lighting fixtures equipped with energy-efficient and high-power-factor

ballasts should be considered. In addition, energy-saving lighting controls should

be considered for new lighting systems.

Emergency lighting units in nonhazardous areas should be connected via a cord

and plug for ease of maintenance. A simplex-type receptacle, preferably a twist-

lock type, should be provided for such a connection.

Lighting fixture types, location, and illumination levels should be coordinated with

the equipment and functions of telecommunication, alarm, and ADP centers to

provide required illumination without

interfering with prompt identification of self-illuminating indicating devices,

creating reflecting glare that might detract from adequate observation of

essential equipment,

creating detrimental electrical or electromagnetic interference to proper

operation of equipment.

Exterior Lighting .

2.5

High-pressure sodium lighting fixtures with built-in photocell control and high-

power-factor ballasts should be used for outdoor lighting. Where required by

design considerations (e.g., security, street, and fence lighting circuits), contactor

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