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:
requires that a control room be provided from which actions can be taken to operate the nuclear power unit during both normal operating and accident conditions, including the loss of coolant accident. Branch Technical Position RSB 5-1 provides guidance for compliance with GDC 19 with regard to achieving cold shutdown from the control room using only safety grade equipment. The residual heat removal systems are required for safe shutdown and cooldown of the reactor during normal and accident conditions. Compliance with GDC 19 enhances plant safety by ensuring the availability of adequate instrumentation and controls in the control room to perform the required safety functions of the residual heat removal systems under all anticipated conditions. 5. GDC 34 requires the capability to transfer decay heat and other residual heat from the reactor such that fuel and pressure boundary design limits are not exceeded. In addition, the system must be designed with sufficient redundancy and isolation capability to ensure the safety function can be accomplished assuming a single failure of an active component with or without a coincident loss of offsite power. The residual heat removal systems function to transfer the fission product decay and other residual heat from the reactor core. Removal of decay and residual heat is necessary to prevent core damage under DRAFT Rev. 4 - April 1996 5.4.7-10 both normal and accident shutdown conditions. Branch Technical Position RSB 5-1 provides an acceptable approach to assure compliance with GDC 34 with regard to accomplishing the RHR system safety functions assuming a single failure. Compliance with GDC 34 enhances plant safety by providing assurance that decay and residual heat removal will be accomplished and the reactor coolant system pressure boundary and fuel cladding integrity will be maintained, thereby minimizing the potential for release of fission products to the environment. III. REVIEW PROCEDURES The procedures below are used