Guidance Document for Integrated Safety Assessment Methodology (ISAM) - (GDI): EC JRC report prepared for GIF Risk and Safety Working Group

摘要

A key objective of the Generation IV (Gen IV) International Forum’s Risk and Safety Working Group (RSWG) is the development and the qualification of an integrated methodology that can be used to evaluate and document the safety of Gen IV nuclear systems. The presentation of the GIF’s Integrated Safety Assessment Methodology (ISAM) to different stakeholders, nuclear safety experts and the individual Gen IV System Steering Committees has produced a series of comments and suggestions expressing the explicit need for having a more detailed description/justification about the "integration" of the different ISAM tools, as well as the request for further practical guidelines for its application.This EC JRC report prepared as EURATOM contribution to the GIF Risk and Safety Working Group is a Guidance Document for ISAM (GDI) developed to answer to the comments and suggestions with a view to facilitate the use of the methodology and to provide the users with further help for the ISAM implementation.In first instance the GDI document addresses the demonstration of the consistency and the adequateness of ISAM for the safety related “design / assessment” process while defining the possible role and contribution of each ISAM tool versus the different plant design status (pre-conceptual, conceptual, final; i.e. the step-by-step application of ISAM). The consistency with the current requirements and recommendations applicable to future nuclear systems is also outlined. In addition, while taking into consideration the experience gained with application of ISAM to different innovative design solutions, the GDI also provides a set of examples with the intent to help the designers to develop their own applications.