An approach for using risk assessment in risk-informed decisions on plant-specific changes to the licensing basis

被引：31

作者：

Caruso, MA ^{[1
]}

Cheok, MC ^{[1
]}

Cunningham, MA ^{[1
]}

Holahan, GM ^{[1
]}

King, TL ^{[1
]}

Parry, GW ^{[1
]}

Ramey-Smith, AM ^{[1
]}

Rubin, MP ^{[1
]}

Thadani, AC ^{[1
]}

机构：

[1] US Nucl Regulatory Commiss, Washington, DC 20555 USA

来源：

RELIABILITY ENGINEERING & SYSTEM SAFETY | 1999年 / 63卷 / 03期

关键词：

risk informed regulation; decision-making; probability risk assessment; acceptance criteria;

D O I：

10.1016/S0951-8320(98)00038-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper discusses an acceptable approach that the US Nuclear Regulatory Commission staff has proposed for using Probabilistic Risk Assessment in making decisions on changes to the licensing basis of a nuclear power plant. First, the overall philosophy of risk-informed decision-making, and the process framework are described. The philosophy is encapsulated in five principles, one of which states that, if the proposed change leads to an increase in core damage frequency or risk, the increases must be small and consistent with the intent of the Nuclear Regulatory Commission's Safety Goal Policy Statement. The second part of the paper discusses the use of PRA to demonstrate that this principle has been met. The discussion focuses on the acceptance guidelines, and on comparison of the PRA results with those guidelines. The difficulties that arise because of limitations in scope and analytical uncertainties are discussed and approaches to accommodate these difficulties in the decision-making are described. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：231 / 242

页数：12