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Building on the previous background regarding the hazards and prevention measures of SSCC in H₂S-H₂O environments, the current mainstream testing methods can be divided into laboratory simulation tests and on-site tests on operating equipment. Both types adhere to internationally and domestically recognized standards. Laboratory standard simulation tests follow standards such as NACE TM0177 and GB/T 4157; methods including constant-load tensile testing, four-point bending, and C-ring testing are employed to place stressed specimens in a simulated wet H₂S environment. Crack formation is observed using a metallographic microscope, or the critical stress and crack growth threshold KISSC are determined in order to evaluate the material’s resistance to SSCC. For on-site inspection of operating equipment, methods such as ultrasonic testing, magnetic particle testing, and penetrant testing are employed to focus on areas where SSCC occurs frequently, such as welds and stress concentration zones. Hardness testing is also carried out to determine whether the material hardness exceeds the specified limit (a value of HRC≤22 is considered acceptable). In addition, samples of the medium are taken for analysis of H₂S partial pressure and pH value, in order to assess the risk of cracking at any given time. The combination of these two types of testing enables coverage of the entire process, from material selection verification to safety assessment of operating equipment, thereby effectively avoiding the risk of sudden SCC fractures.