Document: NUREG-0800
Document ID: 243e1ce7-857c-48e4-9eb7-6125311da9be
Document Type: srp
Title: RESIDUAL HEAT REMOVAL (RHR) SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070437.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.7
CFR Part: 
CFR Title: 

Content:
cooling load functional requirements and minimum time intervals. c. Identification of essential components associated with the main steam supply and the auxiliary feedwater system that are required to operate during and following shutdown. 18. The reviewer considers compliance with acceptance criteria II.F by verifying that those portions of the RHR systems located outside of containment that contain or may contain radioactive material following an accident are included in a leakage control program. DRAFT Rev. 4 - April 1996 5.4.7-14 The leakage control program should include periodic leak testing and measures to minimize leakage from the RHR systems.111 The RSB review evaluates the applicant responses to the following Task Action Plan items:112 a. II.E.3.2 of NUREG-0660 (CPs and OLs) b. II.E.3.3 of NUREG-0660 (CPs and OLs)113 c. II.B.8 of NUREG-0718 (CPs only)114 d. III.D.1.1 of NUREG-0737 and NUREG-0718 (CPs and OLs)115 19. The reviewer verifies that actions have been taken to ensure continued availability and high reliability of the decay heat removal systems during shutdown operations. For PWRs, design features should be incorporated to prevent a loss of RHR functions under reduced inventory mid-Loop operations. The reviewer should verify that the RHR-specific guidance and measures contained in Generic Letter 88-17 (Reference 14) are satisfied. The RHR-specific guidance contained in Generic Letter 88-17 is summarized as follows: a. The reviewer verifies that the applicant/licensee will have measures in place to assure that the RCS will remain in a stable and controlled condition while in a reduced inventory condition. These measures include both prevention of a loss of RHR and enhanced monitoring requirements to ensure timely response to a loss of RHR, should such a loss occur. b. The reviewer verifies that the applicant/licensee has the capability of continuously monitoring RHR system performance whenever a RHR system is being used for cooling the RCS. c. The