Document: NUREG-0800
Document ID: 087cef2c-a084-4143-84b9-9f1ba68e1851
Document Type: srp
Title: MASS AND ENERGY RELEASE ANALYSIS FOR POSTULATED SECONDARY SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340662.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.1.4
CFR Part: 
CFR Title: 

Content:
PIPE RUPTURES REVIEW RESPONSIBILITIES Primary - Containment Systems Branch (CSB) Secondary - None I. AREAS OF REVIEW The CSB reviews the analyses of the mass and energy release to assure that the data used to evaluate the containment and subcompartment functional design are accept- able for that purpose. The CSB review includes the following areas: 1. The energy sources that are available for release to the containment. 2. The mass and energy release rate calculations. The CSB also reviews the single-failure analyses performed for steam and feedwater line isolation provisions which would limit the flow of steam or feedwater to the assumed pipe rupture. The Mechanical Engineering Branch (MEB) is responsible for reviewing the seismic classification and system quality group classification of steam and feedwater line isolation valves to determine the acceptability of these valves in limiting the mass and energy releases from the steam and feedwater system (see Standard Review Plan Sections 3.2.1 and 3.2.2). The Auxiliary Systems Branch (ASB) reviews the time assumed for operator action to close manual valves in the auxiliary feedwater system. (See Standard Review Plan Section 10.4.9.) II. ACCEPTANCE CRITERIA The CSB acceptance criteria is based on meeting the requirements of General Design Criterion (GOC) 50, with respect to providing sufficient conservation in the mass Rev. 1 - July 1981 USNRC STANDARD REVIEW PLAN Standard retew plans are prepared for the guidance of the Office of Nuclear Reactor Regulation staff responsible for the review of applications to construct and operate nuclear power plants. These documents are made available to the public as part of the Commission's policy to Inform the nuclear Industry and the general public of regulatory procedures and policies. Standard review plans are not substitutes for regulatory guides or the Commission's regulations and compliance with them Is not required. The stndard revw plan sections are keyed to the Standard