Design of the CCTV System for Retube Operations at Pickering "A"

Abstract

This paper describes the design features of the CCTV Vault Observation Subsystem (VOS) for Ontario Hydro for the Pickering "A" Nuclear Power Plant Large Scale Retubing program. This subsystem will be used by a supervisor and several operators to observe fuel channel replacement operations following plant shutdown and removal of the fuel bundles. VOS basically comprises 23 monochrome television camera driven circuits, a matrix switcher, 15 monitors, 9 tape recorders and 4 microphone driven sound circuits. Remote control of the camera's zoom lenses and mounts is via a digitally multiplexed control system. Design considerations included viewing requirements, reliability, radiation, redundancy and economic factors.