Download or read book Technical Approach to Probabilistic Safety Assessment for Multiple Reactor Units written by International Atomic Energy Agency and published by International Atomic Energy Agency. This book was released on 2019-07-23 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technical approach described in this publication builds on the use of a single unit probabilistic safety assessment (PSA) and identifies considerations that are needed from the multi-unit perspective. This is the first attempt to expand the current PSA process to take account of multi-unit issues, and has been done by distilling lessons learned from the Fukushima Daiichi accident and other multi-unit events, and by reviewing previous PSAs and supporting research that have addressed the risks of multi-unit accidents. The publication provides a roadmap and methodology for performing a multi-unit PSA, proposes a set of site level risk metrics, and presents examples of approaches to resolve specific issues.