Document: NUREG-0800
Document ID: 28a7b60c-ac66-4869-9189-83f494a5059d
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350042.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9
CFR Part: 
CFR Title: 

Content:
ribution header. (2) Installation of a continuously operated prelube system which would provide lube oil to all moving parts and bearing surfaces during the standby condition of operation. Appropriate alarms should be provided to alert operators to pump failure or low system pressure. (3) Installation of an intermittently operated prelube system which would provide lube oil to all moving parts and bearing surfaces during the standby condition of operation. This system would operate automatically for a minimum of 5 minutes per day to prelube the moving parts. Appropriate alarms should be provided to alert operators of pump failure to start. i. The design provides for the total heat removal rates required by the system and the margin in the design heat removal rate capability. 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 require- ments 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 tabula- tion 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