Canadian nuclear standard CSA N285.4 requires the periodic metallurgical examination of removed ex-service steam generator tubes. This paper describes the practices used for the characterization and structural integrity tests of ex-service steam generator tubes at Ontario Power Generation (OPG). It shows that there is no degradation in mechanical properties of Monel 400 tubes after 7 to 18 Effective Full Power Years (EFPY) of operation and Incoloy 800 tubes after more than 10 EFPY of operation.
- Nuclear Engineering Division
Characterization and Structural Integrity Tests of Ex-Service Steam Generator Tubes
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Pagan, S, Duan, X, Kozluk, MJ, Mills, B, & Goszczynski, G. "Characterization and Structural Integrity Tests of Ex-Service Steam Generator Tubes." Proceedings of the 16th International Conference on Nuclear Engineering. Volume 1: Plant Operations, Maintenance, Installations and Life Cycle; Component Reliability and Materials Issues; Advanced Applications of Nuclear Technology; Codes, Standards, Licensing and Regulatory Issues. Orlando, Florida, USA. May 11–15, 2008. pp. 627-632. ASME. https://doi.org/10.1115/ICONE16-48505
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