Document: NUREG-0800
Document ID: b1bccb14-17b6-422b-93ee-6d4f00b6512b
Document Type: srp
Title: CHILLED WATER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1510/ML15103A559.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.7
CFR Part: 
CFR Title: 

Content:
rly shutdown and cool down of the remaining units. GDC 5 applies to this SRP section because the reviewer evaluates in the safety evaluation report (SER) the use of the CWS in multiple unit plants for whether an accident in one unit significantly affects the capability to conduct a safe and orderly shutdown and cool down in other units. GDC 5 requirements provide assurance that the CWS and its components will continue to perform their required safety functions even if shared by multiple nuclear power units. 5. GDC 44 requires a system be provided to transfer heat for SSCs important to safety, to an ultimate heat sink. The system safety function shall be to transfer the combined heat load of these SSCs under normal operating and accident conditions. GDC 44 requires suitable redundancy in components and features, and suitable interconnections, leak detection, and isolation capabilities shall be provided to assure that for onsite electric power system operation (assuming offsite power is not available) and for offsite electric power system operation (assuming onsite power is not available) the system safety function can be accomplished, assuming a single failure of a component to perform its intended safety function. GDC 44 applies to this SRP section because the reviewer evaluates the CWS for its capability to continue performing intended safety functions during normal operations, AOOs, and accident conditions, assuming a single failure of a component to perform its intended safety function concurrent with the LOOP. GDC 44 requirements provide assurance that the CWS and its components will continue to perform their required safety functions, assuming a single failure of a component to perform its intended safety function concurrent with the LOOP. 6. GDC 45 requires that the cooling water system shall be designed to permit appropriate periodic inspection of important components, such as heat exchangers and piping, to assure the integrity and capability of the system.