Evaluation of Thermal Ageing of RCP 90&#176; Elbow for Nuclear Power Plants

Huang Junlin; Liu Xianghong; Huang Bingyan

doi:10.13832/j.jnpe.2015.02.0105

Volume 36 Issue 2

Feb. 2025

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Huang Junlin, Liu Xianghong, Huang Bingyan. Evaluation of Thermal Ageing of RCP 90° Elbow for Nuclear Power Plants[J]. Nuclear Power Engineering, 2015, 36(2): 105-108. doi: 10.13832/j.jnpe.2015.02.0105

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Huang Junlin, Liu Xianghong, Huang Bingyan. Evaluation of Thermal Ageing of RCP 90° Elbow for Nuclear Power Plants[J]. Nuclear Power Engineering, 2015, 36(2): 105-108. doi: 10.13832/j.jnpe.2015.02.0105

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Evaluation of Thermal Ageing of RCP 90° Elbow for Nuclear Power Plants

doi: 10.13832/j.jnpe.2015.02.0105

Nuclear Power Institute of China, Chengdu, 610041, China

Received Date: 2014-03-17
Rev Recd Date: 2014-11-05

Available Online: 2025-02-15

Abstract

Abstract

Impact and fracture toughness properties of the reactor coolant piping（RCP） 90°elbow made by static cast austenitic-ferritic（duplex） stainless steels for Qinshan phase II extension project are evaluated, after long time ageing and 10 years’ service at 325℃, according to the methods and procedures from IAEA and other international literatures. The evaluation results indicate that: the impact and fracture toughness properties of the elbow decrease obviously after 10years’ service at 325℃, but the impact properties remain in the safe range; after long time ageing, the impact value can not satisfy the design requirement anymore.
- Cast austenitic-ferritic stainless steels,
- RCP,
- Thermal ageing,
- Impact toughness,
- Fracture toughness,
- J-R curve

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