UFC 3 -520-01
June 10, 2002
F-15.5.6 Sodium lamps should not be used. Refer to paragraphs F -6.6 through F-6.8.2
for additional information.
Lighting in Cold Temperature Applications. Special ballasts might be
required for operation in low te mperatures. Electronic ballasts tends to work properly
even in cold temperatures. Verify with the manufacturer that the selected lighting
equipment is suitable for cold temperature operation.
Airfield Lighting. Refer to UFC 32-1187, Design Standards for Visual Air
Navigation Facilities, for airfield lighting requirements.
F-16.1.1 Many existing lighting systems can be retrofitted with new technology to
provide appropriate lighting. Luminaires in good condition, whether relocated or
salvaged, should be considered an alternative to new lighting equipment when
retrofitted with efficient technology.
F-16.1.2 Retrofitting requires appropriate design analysis to ensure that acceptable
results will be achieved. Redistribution of light should only be accomplished based
upon sound design principles. Specular reflectors and parabolic retrofits should only be
used after testing and system design is accomplished. The following sections provide
typical retrofit possibilities; however, it is stressed that lighting design changes require
Existing Troffer Systems.
F-16.2.1 Typical Installations. Convert T-12 lighting systems to T-8 lamps and
electronic high frequency ballasts. In most cases, delamp 4 -lamp luminaires to either 2
or 3 lamps. Silver or polished aluminum reflectors can be installed in older lensed
troffers, and white painted reflectors should be installed in older parabolic troffers.
Install new lenses in lensed troffers if existing lenses are more than 7 years old.
F-16.2.2 Special Considerations for Computer Intensive Workspace. Most lensed
troffers are not suited for computer workspaces. For existing lensed luminaires, remove
the lens and install a silver reflector and small-cell paracube louver. Alternatively, use a
parabolic louver conversion kit.
F-16.2.3 Retrofits. In some cases, consider a new indirect lighting system designed to
retrofit an existing troffer installation.
F-16.3.1 Typical Installations. Remove the incandescent lamp and socket, and
install a hardwired compact fluorescent adapter using a standard plug -based compact