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:
ii. The capability to isolate components of the system or piping if required for system safety function. Each EDECWS is independent and physically separated from the other system serving the redundant diesel generator. A single failure in the EDECWS will affect only the associated diesel generator. The EDECWS transfers the heat generated by the diesel to the ultimate heat sink via the heat exchangers and the service water system. The applicant has also met the positions of NUREG/CR-0660, "Enhancement Of Onsite Emergency Diesel Generator Reliability." D. The applicant has met the requirements of GDC 45 for design provisions for periodic inspections of EDECWS safety-related components and equipment and GDC 46 for design provisions for appropriate functional testing of safety-related systems or components for structural integrity, leak-tightness, operability, and performance of active components and the EDECWS capability to function as intended under accident conditions. To assure structural integrity, leak-tightness, operability, and performance of active components and the capability of the system to function as intended, the EDECWS permits periodic inspection and functional testing during standby and normal modes of power plant operation. 9.5.5-12 Revision 3 - March 2007 The staff concludes that the EDECWS design complies with all applicable GDCs, RG positions cited, NUREG/CR-0660, staff positions, and industry standards and is therefore acceptable. For DC and COL reviews, the findings will also summarize the staff’s evaluation of requirements and restrictions (e.g., interface requirements and site parameters) and COL action items relevant to this SRP section. In addition, to the extent that the review is not discussed in other SER sections, the findings will summarize the staff's evaluation of the ITAAC, including design acceptance criteria, as applicable. V. IMPLEMENTATION The staff will use this SRP section in performing safety evaluations of DC applications