Document: NUREG-0800
Document ID: 90f64116-09ca-459d-8277-ecf8fc888100
Document Type: srp
Title: EMERGENCY DIESEL ENGINE LUBRICATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070572.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.7
CFR Part: 
CFR Title: 

Content:
city, is designed with sufficient volume to support continuous full-load operation of the diesel engine for a period of 7 days.49 2. The reviewer determines that the system is designed to maintain its function under adverse environmental phenomena. The reviewer, using engineering judgment and the results of failures modes and effects analyses, determines that: a. The failure of systems not designed to seismic Category I requirements or of nonseismic Category I structures that house, support, or are close to the EDELS, will not preclude functioning of the system. Chapters 2 and 3 of the SAR describe related site features and provide the general structural arrangement and layout drawings and a tabulation of seismic design classifications for the structures and systems. Statements in the SAR to the effect that the above design requirements are met are acceptable. b. The essential portions of the system are protected from the effects of floods, hurricanes, tornadoes, and internally and externally generated missiles. 3. The reviewer verifies that the EDELS is protected from the effects of breaks in high- and moderate-energy lines. The system description in the SAR is reviewed to verify that there are no high- or moderate-energy piping systems close to the lube oil system or that protection from effects of failure will be provided. The means of providing such protection are given in Chapter 3 of the SAR and procedures to review the information presented are given in the corresponding SRP sections. 4. The descriptive information, P&IDs, related system drawings, and system analyses in the SAR are reviewed to assure that essential portions of the system will function following design basis accidents, assuming a concurrent single active component failure. The reviewer evaluates the results of failure modes and effects analyses presented in the SAR to assure functioning of required components, traces the availability of these components on system drawings, and checks that