RECENT UPDATES OF RISK ASSESSMENT STANDARDIZATION PROJECT (RASP) HANDBOOK FOR RISK ASSESSMENT OF OPERATIONAL EVENTS

摘要

This paper provides an overview of recent updates and ongoing activities to enhance the NRC Risk Assessment Standardization Project (RASP) Handbook for risk assessment of operational events. This RASP Handbook was developed to provide consistent methods for use by NRC staff in performing risk assessments in various risk-informed regulatory applications. The Handbook describes methods that are used in risk analysis of plant conditions for Significance Determination Process (SDP) Phase 3 analyses, and for the Accident Sequence Precursor (ASP) program and Management Directive (MD) 8.3 event assessments. Revision 1 of the RASP Handbook containing Volumes 1, 2 and 3 has been updated on a periodic and as-needed basis, based on user comments and insights gained from field application of the documents. In concert with ongoing activities to enhance the RASP Handbook, new topics are being added to future revisions of the Handbook to streamline risk assessments performed by NRC staff.