Document: NUREG-0800
Document ID: c755e557-3a72-423f-92bc-0f0270936e27
Document Type: srp
Title: RESIDUAL HEAT REMOVAL (RHR) SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1006/ML100680577.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.7
CFR Part: 
CFR Title: 

Content:
r SRP Section 3.12, the organization responsible for the review of materials engineering issues related to flaw evaluation and welding reviews the design of the RHR systems for new light-water reactor designs to verify, to the extent practical, that low-pressure portions of the RHR that interface with the RCS will withstand full RCS pressure. If designing the RHR 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. 2. With respect to the staff review for compliance with Branch Technical Position (BTP) 5-4, the organizations responsible for the review of the steam and feedwater system, RCS, and reactor thermal hydraulic systems divide the evaluation as follows: A. For BWRs, the organization responsible for the review of reactor thermal hydraulic systems in BWRs reviews the processes and systems used in the cooldown of the reactor for the entire spectrum of potential RCS pressures and temperatures during decay heat removal. 5.4.7-4 Revision 5 - May 2010 B. For PWRs, the organization responsible for the review of reactor thermal hydraulic systems in PWRs reviews the approach used to meet the functional requirements of BTP 5-4 with respect to cooling down to the conditions permitting operation of the RHR system. Since an alternate approach to that normally used for cooldown may be specified, the reviewer identifies all components and systems used. The organization responsible for review of the RCS has primary review responsibility for the review of the pertinent portions of the chemical and volume control system (CVCS) (SRP Section 9.3.4). The organization responsible for the review of steam and feedwater system, as part of its primary review responsibility for SRP Sections 10.3 and 10.4.9, reviews the atmospheric dump valves and the source for auxiliary feedwater, respectively, for conformance