Document: NUREG-0800
Document ID: 8940dd69-2a01-4786-bbe6-f71794a60643
Document Type: srp
Title: LOSS-OF-COOLANT ACCIDENTS RESULTING FROM SPECTRUM OF POSTULATED PIPING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350156.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.6.5
CFR Part: 
CFR Title: 

Content:
Section 6.3. The RSB reviews the analytical techniques and computer programs used by the applicant for the blowdown, refill, and reflood portions of the loss-of-coolant transient. The RSB also reviews the analytical techniques and computer programs used by the applicant for the cladding temperature, cladding rupture and swelling calculations. RSB will perform independent audit blowdown, refill, reflood and cladding calculations as required to verify the applicant's conclusions. AEB as part of its secondary review responsibility provides an evaluation of fission product releases and radiological consequences. This effort is described in the appendices to this SRP section and their results are included in -the SER writeup. The RSB will coordinate, as required and by request, other branch evaluations that interface with the overall review of this SRP section as follows: The Auxiliary Systems Branch (ASB) review of Chapters 9 and 10 of the applicant's SAR includes an-evaluation of auxiliary systems (e.g., service water system, component cooling system, ultimate heat sink, condensate storage facility) to confirm that these systems can supply all the functions required to support the ECCS in performing its function during and following a loss-of-coolant accident. Upon request, ASB will verify that the auxiliary system described by the applicant for the safety analysis supply all the functions required. ASB also, upon request from RSB, reviews the failure modes analysis of the ECCS to verify that an adequate analysis of possible failure modes of ECCS equipment and the effect of the failure modes on the ECCS performance has been provided. The Containment Systems Branch (CSB) review of SRP Section 6.2.1 includes an evaluation of the functional capability of the containment for the 15.6.5-2 Rev. 2 - July 1981 spectrum of loss-of-coolant events. CSB verifies, upon request from RSB, that the assumptions used for the containment response analysis have been selected in a