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    STP1228

    Gamma-Ray Dose Mapping in Operational CANDU Reactor Containment Areas Using MOS Dosimeters

    Published: 0


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    Abstract

    It is important to determine the radiation dose received by key operational equipment in the containment areas of CANDU reactors. A dosimetry system was developed to evaluate the radiation environment under operational conditions. The key component in the system is a passive MOS (semiconductor) dosimeter which is hermetically sealed and is not affected by the high humidity in the containment area. Doses were measured in a number of Ontario Hydro operating reactor sites over periods of 4 000 to 11 000 hours. As a result of this dose mapping study, several remedial actions have taken place and it is recommended that similar reactors undergo this type of study.

    Keywords:

    gamma rays, dose mapping, nuclear reactors, MOS dosimeters


    Author Information:

    Mackay, G
    Research Engineer, Thomson and Nielsen Electronics Ltd., Ottawa, ONT.

    Thomson, I
    President and research scientist, Thomson and Nielsen Electronics Ltd., Ottawa, ONT.

    Hirning, CR
    Health Physicist, Ontario Hydro, Pickering, ONT.

    Zeya, M
    Nuclear Design Engineering Specialist, Ontario Hydro, ONT.


    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP15138S