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AbstractAbstract
[en] The start of safeguards inspection of reprocessing plant is briefly reviewed and the changeover from intermittent inspection to continuous inspection is outlined. The methods, which are subdivided into safeguards implementation before startup, during operation, and after shutdown of the facility - are described. The step-by-step procedure of approval based on the Euratom Treaty guarantees a good knowledge of both process and facility by the inspectors before startup. The description of the inspectors' manual stresses the following points: Accounting procedures used for flow and inventory measurement; verification and independent measurements to be performed by the inspectors; and surveillance measures applied during inspection. The theoretical assumptions for a conceptual inspection plan for a model reprocessing plant have had to be modified in the light of difficulties encountered in actual operating conditions. A wide range of examples is given, discussing inventory-taking with detection of hidden inventory, input and output measurement comparing results of control laboratories with plant results, waste management and measurements with non-destructive devices and various practical problems encountered during inspection. Surveillance and containment measures are also briefly discussed. The necessity of an independent material balance made by the Safeguards Authority is discussed. Attention is paid to the material balance as a whole and to its components, and the extent to which the degree of independence may be improved by surveillance and containment measures. The necessity of further development work in particular for input measurements is pointed out. (author)
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Source
International Atomic Energy Agency, Vienna (Austria); Proceedings series; v. 2 p. 361-375; ISBN 92-0-070176-0;
; 1976; IAEA; Vienna; Symposium on the safeguarding of nuclear materials; Vienna, Austria; 20 Oct 1975; IAEA-SM--201/70

Record Type
Book
Literature Type
Conference
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