Constant extension rate tensile (CERT) specimens were irradiated in the core of a commercial operating BWR. Subsequently to irradiation, CERT testing was performed in a test loop attached to the reactor water clean-up system in the same BWR, using reactor water at a high flow rate. Testing was performed in BWR normal water chemistry (NWC), and BWR hydrogen water chemistry (HWC). Type 316 SS was much less susceptible to IASCC than Type 304 SS in both NWC and HWC. In addition, high purity (HP) Type 304 SS was more susceptible to IASCC than commercial purity (CP) Type 304 SS in NWC at intermediate fluence...
Keywords: IASCC, Type 304 SS, Type 316 SS, BWR, Molybdenum, RIS, FEGSTEM, Auger, NWC, HWC