Document: NUREG-0800
Document ID: e32f0820-4e33-476e-aa36-4ca8c2c64af0
Document Type: srp
Title: Use of Probabilistic Risk Assessment in Plant-Specific, Risk-Informed Decisionmaking:
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0119/ML011940192.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
winds and external flooding), and low power and shutdown modes of operation.3 Quality Assurance Requirements Related to the PRA To the extent that a licensee elects to use PRA as an element to enhance or modify its implementation of activities affecting the safety-related functions of SSCs, appropriate quality requirements will also apply to the PRA. In this context, therefore, a licensee would 2 In April 2000, the Nuclear Energy Institute submitted a process (Ref. 7) for peer review of licensee PRAs. It was submitted for staff review in the context of its use in categorizing SSCs with respect to special treatment requirements (i.e., supporting NRC's risk-informed "Option 2" work (SECY-99-256, Ref. 8)). This process may also be of use in LB changes (as well as other regulatory activities not addressed here); if so, future revisions of this Standard Review Plan chapter may endorse this certification process for this purpose. ' The American Society of Mechanical Engineers (ASME) is developing a draft standard, "Standard for Probabilistic Risk Assessment for Nuclear Power Plant Applications." Revision 12 of this standard was issued for public comment in May 2000. This standard is for level 1 and level 2 (LERF only) PRAs for internal events (excluding fire) that occur during full power operations. The American Nuclear Society (ANS) is developing a draft standard for external events (e.g., seismic, including seismic margins, wind, flood), "External Events PRA Methodology Standard." A draft was issued for public comment in January 2001. The ANS is also developing a draft standard for-low power and shutdown conditions, "Standard for Probabilistic Risk Assessment for Nuclear Power Plant Applications: Low Power and Shutdown," which is scheduled for issuance for public comment in December 2002. In addition, the various engineering professional societies are considering developing a Standard for performing a fire PRA. SRP 19-18 be expected to control PRA activity in a manner