T/CNS 12-2019 in English

本标准给出了压水堆核电厂低合金钢、奥氏体不锈钢和镍基合金的环境疲劳影响模型。本标准适用于压水堆核电厂一回路压力边界部件的环境疲劳设计、环境疲劳损伤评估和寿命评估。

Scope

During the writing of this section, references were made to the metal industry standard of the Institute of Metal Research (IMR) "Q/KJ.08.09—2017 Nuclear Power Plant Structure Material Light Water Reactor Environment Fatigue Design Model," ASME Boiler and Pressure Vessel Code Section III-2004, NUREG/CR-6909, Effect of LWR coolant environments on the fatigue life of reactor materials, and JNES-SS-1005, Environmental fatigue evaluation method for nuclear power plants regarding fitting methods for mean curves of nuclear power plant structure material, establishment methods of design curves, and components process of environmental fatigue design models. These were specifically developed based on the accumulation of environmental fatigue data for nuclear power plant structures by the Institute of Metal Research (IMR). Detailed technical content is shown in Table 1. The materials include 19MnNiMo reactor pressure vessel ferritic steel forgings with a chemical composition of: 0.2C, 1.41Mn,