Document: NUREG-0800
Document ID: 2200e046-1749-4aa1-a474-997b369b63b2
Document Type: srp
Title: REACTOR AUXILIARY COOLING WATER SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070513.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.2
CFR Part: 
CFR Title: 

Content:
to ensure a period of 20 minutes is available so that the operator would have sufficient time to initiate manual protection of the plant. Alternatively, if it is not demonstrated by the necessary pump testing that the reactor coolant pumps will operate for 20 minutes without operator corrective action, then:39 1. Instrumentation in accordance with IEEE 279 IEEE Std 603, as endorsed by Regulatory Guide 1.153, is provided consistent with the criteria for 40 the protection system to initiate automatic protection of the plant upon loss of cooling water to a pump. For this case, the component cooling water supply to the seal and bearing of the pump may be designed to nonseismic Category I requirements and Quality Group D; or 2. The component cooling water supply to each pump is designed to be capable of withstanding a single active failure or a moderate-energy line crack as defined in Branch Technical Position ASB 3-1 and to seismic 41 Category I, Quality Group C, and ASME Section III Class 3 requirements. 5. General Design Criterion 45 (GDC 45), as related to the design provisions to permit 42 inservice inspection of safety-related components and equipment. 6. General Design Criterion 46 (GDC 46), as related to the design provisions to permit 43 operational functional testing of safety-related systems or components to ensure: a. Structural integrity and system leak tightness. b. Operability and adequate performance of active system components. c. Capability of the integrated system to perform required functions during normal, shutdown, and accident situations. DRAFT Rev. 4 - April 1996 9.2.2-8 Technical Rationale44 The technical rationale for application of these acceptance criteria to reviewing the CWS is discussed in the following paragraphs:45 1. Compliance with GDC 2 requires that nuclear power plant structures, systems, and components important to safety be designed to withstand the effects of natural phenomena such as earthquake, tornado, hurricane, flood,