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AbstractAbstract
[en] Small cracks in 17 of the 390 pressure tubes in Unit 3 of the 2056 MW (electrical) Pickering Generating Station and of 52 tubes in Unit 4, resulted in each of these units being out of service for many months. The cracks originated at areas of extremely high residual tensile stress produced by improper positioning of the rolling tool used during construction to join the pressure tube to its end-fitting. The mechanism of failure was delayed hydrogen cracking. (author)
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Atomic Energy of Canada Ltd., Chalk River, Ontario. Chalk River Nuclear Labs; p. 50-57; Spr 1978; p. 50-57
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