Document: NUREG-0800
Document ID: 2c839e4a-a342-4e25-9a7c-82d678a0f754
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340657.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6
CFR Part: 
CFR Title: 

Content:
will provide input for the areas of review stated in subsection I of this SRP section. The primary reviewer obtains and uses such input as required to assure that this review procedure is complete. 1. The CSB reviews the analyses of the drywell and wetwell temperature and pressure response for Mark I, II and III containments. The CSB performs confirmatory analyses, when necessary, using the CONTEMPT-LT computer code. Input data for the code, including mass and energy release data, are generally taken from the safety analysis report. The CSB normally analyzes only the design basis loss-of-coolant accident, which has been found from previous reviews to be the recirculation line break for Mark I and II plants. For Mark III plants, the steam line break has been determined to be the design basis loss-of-coolant accident. However, mass and energy releases from the recirculation line break will be evaluated using various flow correlations. The CSB evaluates analyses of both the short-term and long-term pressure and temperature responses of Mark III containment plants. For Mark III plants, the peak containment pressure following a loss-of-coolant accident is independent of the postulated pipe break size. The CSB reviews the containment response analysis presented in the safety analysis report to determine that the acceptance criteria in subsection II have been satisfied. The CSP and its consultants have reviewed the General Electric Mark III analytical model and have-determined that the code appears to calculate the drywell pressure response in an acceptable manner. The code has been verified by the General Electric Mark III test program. The CSB verifies from the safety analysis repor .that the General Electric code has been utilized and that the input assunmtions to the code are conservative. If analytical methods other thar the General Electric mode, are used, the CSB, in conjunction with its con.ujtants, will initiate a detailed review of the methods. In this case, the