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Cite this document
Within the International Atomic Energy Commission (IAEA) coordinated program on the optimizing of reactor pressure vessel surveillance programs and their analysis, Phase 3, a specially tailored "radiation sensitive" correlation monitor material has been fabricated. This material will serve as a reference to the IAEA program for future vessel surveillance programs throughout the world.
An extensive evaluation of the correlation monitor material in the as-received condition has been carried out in Finland and the results are presented here. The mechanical properties measured at different temperatures include Charpy V-notch and instrumented precracked Charpy data, and elastic-plastic fracture toughness (J and T). The specimen size and geometry have been varied in the tests. Correlation between different fracture properties are evaluated and discussed.
pressure vessel steel, fracture toughness, radiation embrittlement, surveillance program
Senior research officer, Technical Research Centre of Finland (VTT), Metals Laboratory, Espoo,
Senior research officer, Reactor Laboratory, VTT,
Head of Structural Engineering Section, Metals Laboratory, VTT,
Director of Metals Laboratory, VTT,
Head of Materials Engineering Office, Imatran Power Co., Helsinki,