The portable underwater television (UWTV) system is mainly used
for verifying bundles in spent fuel ponds of CANDU type reactors.
It can also be used for other kinds of underwater inspection. A
complete system consists of a radiation hardened camera, a camera
control unit (CCU) and various accessories such as a motorized 90°
rotating head and a lighting system. Light accessories are
available for long and short distance verification activities. For
bundle ID verification, the camera must be capable of reading small
letters under limited light conditions and of withstanding very
high radiation levels, while still remaining watertight at a depth
of 15 m in water. The CCU has a built-in monochrome monitor for
on-site review. The video can also be recorded on an external
videocassette recorder.
(Source: IAEA Safeguards Techniques and Equipment)
