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:
edwater 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 to BTP 5-4. The organization responsible for the review of reactor thermal- hydraulic systems in pressurized-water reactors reviews the pressurizer relief valves and emergency core cooling system (ECCS), if used. As part of its primary review responsibility for SRP Section 6.8, the organization responsible for the review of reactor thermal hydraulic systems reviews the PWR depressurization systems used for cooldown. In addition, the organization responsible for the review of reactor thermal hydraulic systems reviews the tests and supporting analysis concerning the mixing of borated water and cooldown under natural circulation as required in BTP 5-4. C. For both PWRs and BWRs, the organization responsible for the review of cooling water systems associated with balance of plant reviews the component cooling or service water systems that transfer decay heat from the RHR system to the UHS as part of its primary review responsibility for SRP Sections 9.2.1 and 9.2.2. D. The organization responsible for the review of reactor thermal hydraulic systems reviews the design and operating characteristics of the RHR system with respect to its shutdown and long-term cooling function. Where the RHR system interfaces with other systems (e.g., RCIC system, component cooling water system), the responsible organization reviews the effect of these systems on the RHR system. The responsible organization also reviews overpressure protection provided by the valving between the RCS and RHR system. In addition, the organization responsible for the review of reactor thermal hydraulic systems will coordinate evaluations of other reviewers that interface with the overall review of the RHR system as follows: 1. The organization responsible for the review of containment integrity performs the