Document: NUREG-0800
Document ID: 02f672d7-50e8-458f-90d4-e5eb19bd5a4d
Document Type: srp
Title: EMERGENCY DIESEL ENGINE COOLING WATER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550035.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.5
CFR Part: 
CFR Title: 

Content:
nce with GDC 2 is reviewed under other SRP sections as specified in subsection I of this SRP section. 3. GDC 5 requirements for sharing of SSCs important to safety among nuclear power units are met if each unit has its own diesel generator(s) and each diesel generator has an independent and reliable cooling water system. 9.5.5-6 Revision 3 - March 2007 4. GDC 17 requirements for the capability of the cooling water system to meet independence and redundancy criteria are met when: A. Each diesel generator has a separate and independent EDECWS. B. NRC recommendations specified in NUREG/CR-0660, "Enhancement of Onsite Emergency Diesel Generator Reliability," are implemented. 5. GDC 44 requirements are met when the EDECWS has: A. The capability to transfer heat from systems and components to a heat sink under transient or accident conditions. B. Redundancy of components for performance of safety functions under accident conditions, assuming a single active component failure, or each diesel generator has a separate and independent EDECWS. C. The capability to isolate system or piping components if required to maintain the system safety function. 6. GDC 45 as to design provisions for periodic inspection of safety-related system components and equipment. 7. GDC 46 as to design provisions for appropriate functional testing of safety-related systems or components for structural integrity and leak-tightness, operability, performance of active components, and the capability of the system to function as intended under accident conditions. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. GDC 2 requires that SSCs important to safety be designed to withstand the effects of natural phenomena like as earthquakes, tornadoes, hurricanes, floods, tsunami, and seiches without loss of capability to perform safety functions. The EDECWS safety function is