MEASUREMENT OF GAMMA RADIATION PROFILE INSIDE A CANDU REACTOR
An instrument based on a small and inexpensive silicon diode was developed and used to measure, for the first time, the gamma radiation exposure rate within a start-up instrumentation guide tube in a shut down CANDU1 reactor undergoing refurbishment. The shape of the measured profile agreed with the expectation; however, the maximum measured exposure rate was about four times higher than the calculation. Two adjuster rods located above the core and adjacent to the guide tube, could be clearly identified from the features of the radiation profile measurement. These measurements provide confirmatory information for the creation of safe and effective radiation work plans and selection of appropriate in-core instrumentation. This technology can be used to accurately measure the positions of irradiated reactor components, such as adjuster rods, pressure tubes, calandria tubes, reactivity control absorbers and other sources of gamma radiation inside a shut down reactor.
S.Yue B.H.Smith G.Jonkmans B.Sur D.Comeau D.Taylor
Atomic Energy of Canada Limited Chalk River Laboratories Chalk River, Ontario, K0J 1J0 Canada Point Lepreau Generating Station PO Box 600 Lepreau, New Brunswick, E5J 2S6 Canada
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-5
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）