Electrochemical behaviors of Type 304 and 304L stainless steels in simulated BWR environments under startup conditions

摘要

As the boiling water reactors(BWRs)age,incidents of intergranular stress corrosion cracking(IGSCC)are more readily seen in the vessel internals.The technology of hydrogen water chemistry(HWC)has been widely adopted in BWRs around the world to mitigate the problem of stress corrosion cracking(SCC)in the structural components.The principle of HWC is to reduce the oxidizing power of the BWR coolant environment by hydrogen injection and subsequently to lower the susceptibility of stainless steel components to SCC.