GENERAL DESCRIPTION
The HPS-1000 Droplight System was designed specifically for use in nuclear reactor
vessels and spent fuel storage pools. The light head uses a high-pressure sodium
discharge light. Because of the very high efficiency, the 1000-watt HPS lamp produces
the equivalent light of seven 1000-watt incandescent lights and will last ten times as
long as an incandescent light used under the same conditions.
In addition to the high efficiency and long lifetime, the construction of the HPS bulb is
extremely rugged with no filaments to break, the actual service lifetime under adverse
handling conditions will far exceed that of standard incandescent droplights.
The HPS-1000 Droplight System includes the droplight, with detachable power cable,
and a regulating ballast power supply. The 1000-watt HPS bulb in the droplight is
permanently bonded to an electropolished stainless steel base. A flexible insulating
compound provides shock mounting, and eliminates the need for bulb sockets, o-rings,
gaskets, or lip seals which could leak and cause premature failure. An outer quartz
envelope surrounds the sodium arc tube. For added protection, an electropolished
stainless steel screen completely encloses the bulb.
The configuration of the droplight allows it to be easily lowered through small openings
(light diameter is 3.5 inches), and recovered without snagging problems. The
detachable power cable is constructed of flexible IEEE-383 rated polyurethane, which
contains no halogens and is easy to wipe down to minimize contamination. The HPS
1000 Droplight is also available with two different reflectors. The standard reflector
directs the light downward. The optional side looking reflector directs the light to the
side and has a weighted base to stand self supported in the flow holes of the lower core
support plate. Either reflector can be quickly and easily installed or removed for use in
confined areas.
The in-air ballast power supply for the droplight is contained in a lightweight aluminum
air-cooled housing, and includes an on-off power switch and a cooling fan. The input
power cord has a smooth IEEE-383 polyurethane jacket for easy decontamination and
long life. The power supply is 12 x 12 x 6 inches and weight is 36 pounds.
In the standard configuration, a handle is supplied for ease of transport. In an optional
configuration, the ballast power supply is mounted on high-density polyethylene along
with a cable management system. In the cable management system, power is passed
through slip rings in the system reel and the droplight cable is wound onto the reel. The
HPS-1000 Droplight can then be connected to the cable connector and lowered without
tangles. In both configurations the HPS-1000 Droplight System is coupled to the light
head by a Kellums grip attached to the cable for secure deployment and retrieval and
also provides strain from the connector interface.
80-06003B 05APR04
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