Next Generation Nuclear Plant Defense-in-Depth Approach

Edward G. Wallace ; Karl N. Fleming ; Edward M. Burns

关键词: DESIGN;    EVALUATION;    GAS COOLED REACTORS;    PERFORMANCE;    RELIABILITY;    SAFETY Next Generation Nuclear Plant Project;    NGNP;    NGNP-LIC-GEN-RPT-G-00026;    Westinghouse;   

DOI  :  10.2172/971362
RP-ID  :  INL/EXT-09-17139
PID  :  OSTI ID: 971362
Others  :  TRN: US1001303

学科分类：社会科学、人文和艺术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The purpose of this paper is to (1) document the definition of defense-in-depth and the pproach that will be used to assure that its principles are satisfied for the NGNP project and (2) identify the specific questions proposed for preapplication discussions with the NRC. Defense-in-depth is a safety philosophy in which multiple lines of defense and conservative design and evaluation methods are applied to assure the safety of the public. The philosophy is also intended to deliver a design that is tolerant to uncertainties in knowledge of plant behavior, component reliability or operator performance that might compromise safety. This paper includes a review of the regulatory foundation for defense-in-depth, a definition of defense-in-depth that is appropriate for advanced reactor designs based on High Temperature Gas-cooled Reactor (HTGR) technology, and an explanation of how this safety philosophy is achieved in the NGNP.