Document: NUREG-0800
Document ID: 6f03df27-1f8c-428c-8e39-9465d1235fa1
Document Type: srp
Title: EMERGENCY DIESEL ENGINE LUBRICATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0704/ML070460354.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.7
CFR Part: 
CFR Title: 

Content:
plicable) support conclusions of the following type to be included in the staff's safety evaluation report. The reviewer also states the bases for those conclusions. The EDELS includes the pumps, heat exchangers, valves, piping, makeup piping, and connection or interface points with other systems. The scope of EDELS review for the plant included layout drawings, flow diagrams, P&IDs, and descriptive information for the system and supporting systems essential to its operation. The essential EDELS portions that are necessary for the safe shut down of the reactor or necessary to mitigate the consequences of an accident are designed to seismic Category I and Quality Group C. The staff concludes that the EDELS design is acceptable and meets the requirements of GDCs 2, 4, 5, and 17. This conclusion is based on the following findings: 9.5.7-10 Revision 3 - March 2007 1. The applicant has met the requirements of GDC 2, "Design Bases for Protection Against Natural Phenomena," for the ability of structures housing the EDELS and the system itself to withstand the effects of natural phenomena like earthquakes, tornadoes, hurricanes, and floods and GDC 4, "Environmental and Dynamic Effects Design Bases," for the ability of structures housing the system and the system to withstand the effects of externally- and internally-generated missiles, pipe whip, and jet impingement forces of pipe breaks. The EDELS is housed in a seismic Category I structure which protects it from the effects of tornados, tornado missiles, turbine missiles, and floods. This protection meets the positions of RGs 1.115, "Protection Against Low-Trajectory Turbine Missiles," Position C.1, and 1.117, "Tornado Design Classification," Appendix Position 13. 2. The applicant has met the requirements of GDC 5, "Sharing of Structures, Systems and Components," for the capability of shared systems and components important to safety to perform required safety functions. Each unit of the plant has its own emergency diesel