Additional heating of a thickened portion of the steam generator connector during postrepair thermal treatment of the header-connector weldment leads to a decrease in residual tensile stress levels. It is shown that during hydrostatic tests performed after thermal treatment inelastic strains on the inner connector surface are reduced, which inhances the cycle life of the weldment.
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G. V. Stepanov, V. V. Kharchenko, A. I. Babutskii, et al., “Stress-strain state of the header–steam generator connector weldment induced by local thermal treatment,” Strength Mater., 38, No. 6, 595–600 (2006).
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G. Stepanov and A. Babutskii, “Influence of local axisymmetric heating of a pipe on the level of residual stresses,” Visn. Ternopil Derzh. Tekhn. Univ., 9, No. 4, 32–36 (2004).
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Translated from Problemy Prochnosti, No. 3, pp. 25–31, May–June, 2009.
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Kharchenko, V.V., Stepanov, G.V., Kravchenko, V.I. et al. Redistribution of stresses in the header–PGV-1000 steam generator connector weldment under loading after thermal treatment. Strength Mater 41, 251–256 (2009). https://doi.org/10.1007/s11223-009-9130-7
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DOI: https://doi.org/10.1007/s11223-009-9130-7