In-Situ Calibration of Flux Mapping Detectors in an 103 Operating CANDO Reactor

Abstract

A transportable Travelling Flux Detector (TFD) system designed for the in-situ calibration of fixed self-powered detectors has been developed and tested at Chalk River. This paper describes the first successful use of the computerized TFQ system in an operating CANDU power reactor and the results obtained from the in-situ calibration of the 54 vanadium flux mapping detectors in the Bruce B, Unit 6 reactor. The measured detector sensitivities agree with the power law correlation previously determined in the ZED-2 zero energy experimental reactor at the Chalk River Nuclear Laboratories.