Document: NUREG-0800
Document ID: f673d9c7-5410-4f11-8c45-1935b546a77f
Document Type: srp
Title: EMERGENCY DIESEL ENGINE COOLING WATER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070570.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.5
CFR Part: 
CFR Title: 

Content:
SB review, as indicated in subsection I of this SRP section. 43 The design of the diesel engine cooling water system may vary considerably from plant to plant due to the requirements of various diesel engine manufacturers, the number and type of secondary cooling loops used for heat removal, and the number of intermediate cooling loops required to transfer the rejected heat to the ultimate heat sink. Variations in design may also occur due to performances of various architect-engineer firms. Therefore, for the purpose of this SRP section, a typical system is assumed. Any variance in the review procedure, to suit a particular design, will be such that the system review areas in sub-section I are covered, and the system will meet the criteria in subsection II of this SRP section. The primary reviewer will coordinate this review with the other branches' areas of review as stated in subsection I of this SRP section. The primary reviewer obtains and uses such input as required to assure that this review procedure is complete. 1. The SAR is reviewed to establish that the EDECWS description and related diagrams clearly delineate system operation, individual and total heat removal rates required by components, and the margin in the design heat removal rate capability. The reviewer verifies the following: a. The SEBECGB reviews the seismic design bases and the MEBEMEB reviews 44 45 the quality and seismic classification as indicated in subsection I of this SRP section. The PSBSPLB assures that essential portions of the EDECWS 46 including the isolation valves separating essential and non-essential portions are classified Quality Group C and seismic Category I. Components and system descriptions in the SAR that identify mechanical and performance characteristics are reviewed to verify that the above seismic and quality classification have been included and that the P&IDs indicate any points of change at the systems and/or systems components interfaces. 9.5.5-9 DRAFT Rev. 3 -