© 2021 Electric Power Research Institute, Inc. All rights reserved. www.epri.com John Siefert, Ph.D. John Shingledecker, Ph.D. Tapasvi Lolla, Ph.D. Electric Power Research Institute DOE sCO 2 Cross-Cutting Team Workshop: Evaluation of Welding Issues in High Nickel and Stainless Steel Alloys for Advanced Energy Systems March 10, 2020 Power Generation Industry Experience Stress Relaxation Cracking (SRxC) and Strain Induced Precipitation Hardening (SIPH) Failures