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:
the CSB will determine the validity of the experimental data provided to support the entrainment calculation. The CSB will also ascertain that the effect of steam separators located upstream from the postulated steam line break have been taken into account in the analysis. The CSB reviews comparisons to experi- mental data made by the applicant and makes comparisons to other available experi- mental data to determine the amount of conservatism in the mass and energy release models. The CSB reviews the results of a spectrum of steam line breaks, beginning with the double-ended break and decreasing in area until no entrainment occurs, to be sure that the steam line break size producing the highest containment tempera- ture and pressure has been identified. The CSB performs confirmatory analyses of the containment pressure and temperature response to steam and feedwater line breaks inside the containment using the CONTEMPT-LT computer code. IV. EVALUATION FINDINGS The conclusions reached on completion of the review of this SRP section are presented in Standard Review Plan Section 6.2.1. V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regarding the NRC staff's plans for using this SRP section. Except in those cases in which the applicant proposes an acceptable alternative method for complying with specified portions of the Commission's regulations, the method described herein will be used by the staff in its evaluation of conformance with Commission regulations. VI. REFERENCES The references for this SRP section are listed in Standard Review Plan Section 6.2.1. 6.2.1.4-4 Rev. 1 - July 1981