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:
ent 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 conservative mqanner for the LOCA analysis performed. Upon request from RSB, CSB reviews the containment pressure calculations utilized by the appli- cant, or by the staff in an audit analysis, for the reflood portion of the ECCS performance analyses. The Core Performance Branch (CPB), upon request from RSB, verifies that the core physics data used by the applicant, or by the staff in independent audit analyses, are the appropriate data to be used. CPB also, upon request from RSB, reviews the power transient calculations (including moderator temperature, void and fuel temperature feedback effects, and decay heat) and the cladding rupture and swelling calculations. The Instrumentation and Controls System Branch (ICSB) review of:SRP Sections 7.2 and 7.3 includes a review of the reactor protection system and associated ECCS controls and instrumentation with regard to automatic actuation, remote sensing and indications, remote control, and redundancy. Upon request from RSB, ICSB verifies that the reactor protec- tion system and associated ECCS controls and instrumentation will function as described in the applicant's sequence of events for the safety analyses per- formed. ICSB 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 Power Systems Branch (PSB) review of 8.3.1 and 8.3.2 includes the emergency onsite power functional capabilities. The PSB, upon request from RSB, will verify that the control systems power sources needed to function to mitigate the event are available as required by the applicant's description of the event. P5B also, upon request from RSB, reviews the failure modes