A creep life assessment method for boiler pipes using small punch creep test |
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| Authors: | Toru Izaki Toshimi Kobayashi Junichi Kusumoto Akihiro Kanaya |
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| Affiliation: | 1. Technical Department, Kansai Division, Sumitomo Metal Technology, Inc., 1 Higashimukojima-Nishinocho, Amagasaki, Hyogo 660-0856, Japan;2. Research Laboratory, Kyushu Electric Power Co., Inc., 2-1-47 Shiobaru, Minami-ku, Fukuoka 815-8520, Japan |
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| Abstract: | The small punch creep (SPC) test is considered as a highly useful method for creep life assessment for high temperature plant components. SPC uses miniature-sized specimens and does not cause any serious sampling damages, and its assessment accuracy is at a high level. However, in applying the SPC test to the residual creep life assessment of the boiler in service, there are some issues to be studied. In order to apply SPC test to the residual creep life assessment of the 2.25Cr–1Mo steel boiler pipe, the relationship between uniaxial creep stress and the SPC test load has been studied. |
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| Keywords: | Creep life assessment Small punch creep 2.25Cr&ndash 1Mo Boiler pipe Omega method |
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