Document: NUREG-0800
Document ID: 96ddbfc8-7fd0-4a33-9fbe-144d653b6e9f
Document Type: srp
Title: REACTOR CORE ISOLATION COOLING SYSTEM (BWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070433.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.6
CFR Part: 
CFR Title: 

Content:
h this system is to be designed to continue this extremely high probability of accomplishing its safety functions. Application of GDC 29 provides assurance that specified acceptable fuel design limits are not exceeded as a result of anticipated operational occurrences. 4. GDC 33 specifies requirements for a system to supply reactor coolant makeup for protection against small breaks in the reactor coolant pressure boundary and either onsite or offsite a-c power not available. The RCIC system is designed as a high-pressure reactor coolant makeup system with flow rates sufficient to meet the criteria for small breaks in the reactor coolant pressure boundary without a-c power. Compliance with GDC 33 assures that specified acceptable fuel design limits are not exceeded due to reactor coolant pressure boundary leakage or rupture of small piping or other small components which are part of the boundary. 5. GDC 34 establishes requirements for a system to transfer fission product decay heat and other residual heat from the reactor core. The RCIC system provides the capability for decay heat removal. Compliance with GDC 34 precludes fuel damage or reactor coolant pressure boundary overpressurization in the event of anticipated operational occurrences which would adversely affect functions of systems that provide normal heat removal from the reactor core. 6. GDC 54 requires that piping systems penetrating primary reactor containment be provided with leak detection, isolation, and containment capabilities having redundancy, reliability, and performance capabilities which reflect the importance to safety of isolating these piping systems. Such piping systems are required to be designed with a capability to test periodically the operability of the isolation valves and associated apparatus and to determine if valve leakage is within acceptable limits. Piping in the RCIC system passes through the containment boundary, and is provided with isolation valves and integrity verification