Document: NUREG-0800
Document ID: 47be7233-5326-4a7d-a9c5-f3b91d565a72
Document Type: srp
Title: MINIMUM CONTAINMENT PRESSURE ANALYSIS FOR EMERGENCY CORE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070492.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.1.5
CFR Part: 
CFR Title: 

Content:
ins significant conservatisms to address the uncertainties regarding post-LOCA plant behavior that existed at the time it was developed. Containment minimum pressure directly affects ECCS performance. Calculation and analysis of this parameter, therefore, is an integral part of the ECCS performance evaluation. Complying with this regulation will assure that, in the event of a LOCA, the ECCS will perform as predicted, thereby ensuring limits on maximum peak cladding temperature, maximum cladding oxidation, and maximum hydrogen generation are met and a coolable geometry is maintained. DRAFT Rev. 3 - April 1996 6.2.1.5-4 III. REVIEW PROCEDURES The review procedures described below are followed for the review of the minimum containment pressure analysis. 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. The SCSB reviews the analyses in the safety analysis report of the minimum containment pressure following a loss-of-coolant accident. The SRXBRSB confirms the validity of the applicant's mass and energy release data. The SCSB evaluates the conservativeness of the assumptions used by the applicant regarding the operation of containment heat removal systems and the effectiveness of structural heat sinks, by comparing the applicant's calculational approach to either the method outlined in Branch Technical Position CSB 6-1 or to position 15 C.3.12.1 of Regulatory Guide 1.157 (consistent with subsection II) . In certain cases, the SCSB 16 may perform confirmatory containment pressure response analyses using the CONTEMPT-LT computer code (References 30 and 31) . In these cases, containment pressure calculated by the 17 SCSB is compared to that used in the applicant's evaluation of the performance capability of the emergency core cooling system, to assure that an appropriately conservative