Document: NUREG-0800
Document ID: a4ef36de-b662-41f6-9e66-96e4b7197298
Document Type: srp
Title: MASS AND ENERGY RELEASE ANALYSIS FOR POSTULATED
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0601/ML060150002.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.1.3
CFR Part: 
CFR Title: 

Content:
operating history assumptions associated with those heat sources. Since the | mass and energy release analysis for postulated LOCAs is used to design containment | and containment subcompartments such that they will withstand the worst case LOCA, it | is critical that all potential energy sources are taken into account. Following 10 CFR 50 | Appendix K will ensure that containment and containment subcompartments are | designed to accommodate all energy sources for the worst case LOCA, thus precluding | the potential release of radioactivity to the environment following such a LOCA. | III. REVIEW PROCEDURES The procedures described below are followed for the review of the mass and energy release analysis for LOCAs. The reviewer selects and emphasizes material from these procedures as may be appropriate for a particular case. Portions of the review may be carried out on a generic basis or by applying the results of previous reviews of similar plants. Rev. 2 - January 2006 6.2.1.3-7 The reviewer confirms, with the lead reviewer for SRP Section 3.6.2, the validity of the applicant's analysis of pipe break size, type and locations for subcompartments containing high energy lines by using elevation and plan drawings of the containment showing the routing of lines containing high energy fluids. The reviewer determines that an appropriate reference case for subcompartment analysis has been identified. In the event a pipe break other than a double-ended pipe rupture is postulated by the applicant, the lead reviewer for SRP Section 3.6.2 will evaluate the applicant’s justification for assuming a limited displacement pipe break. The reviewer compares the sources of energy considered in the loss-of-coolant analysis and the methods and assumptions used to calculate the energy available for release from the various sources with the acceptance criteria listed in Section II, above. The reviewer determines the acceptability of the analytical models and the assumptions used to