Document: NUREG-0800
Document ID: ea7ce8f5-32bf-4d8c-a653-e964bff0ef48
Document Type: srp
Title: EMERGENCY CORE COOLING SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070448.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.3
CFR Part: 
CFR Title: 

Content:
e extent practical, that low-pressure portions of the ECCS that interface with the RCS will withstand full RCS pressure. If designing the ECCS with an ultimate rupture strength capable of withstanding full RCS pressure is not possible, the reviewer verifies that appropriate compensating measures have been taken in accordance with the review provided in SRP Section 3.12 (proposed).9 2. SRXB reviews the ability of the ECCS to mitigate the consequences of a spectrum of loss-of-coolant accidents is reviewed by RSB under SRP Section 15.6.5.10 3. SRXB also reviews the capability of the new applicant's BWR ADS systems to support mitigation of severe accidents as part of its review responsibilities for SRP Section 19.2 (proposed).11 In addition, the RSB SRXB will coordinate with other branches' evaluations that interface with 12 the overall ECCS review as follows: 1. The Plant Systems Branch (SPLB) performs the following reviews: a. The ASB SPLB also reviews the effects of pipe breaks outside containment on 13 ECCS. This review includes the effect of pipe whip, jet impingement forces, and environmental conditions created as part of its primary review responsibility for SRP Section 3.6.1. b. SPLB, as part of its review responsibility for SRP Section 3.11, will review the acceptability of, and environmental qualification test program for, ECCS equipment. This review includes consideration of the post-accident environmental design and source term considerations described in TMI action plan item II.B.2 of NUREG-0737 (Reference 34).14 6.3-3 DRAFT Rev. 3 - April 1996 c. Auxiliary Systems Branch (ASB) The SPLB , as part of its primary review 15 responsibility for SRP Sections 9.2.1, 9.2.2, 9.2.5, and 9.2.6, reviews those auxiliary systems essential for ECCS operation (service water system, component cooling system, ultimate heat sink, and condensate storage facility) and assesses the capability of these systems to perform all functions required by the ECCS. The ASB SPLB will