Document: NUREG-0800
Document ID: 82c03523-2d2b-49d4-a06b-4def71350079
Document Type: srp
Title: EMERGENCY DIESEL ENGINE FUEL OIL STORAGE AND TRANSFER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070680388.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.4
CFR Part: 
CFR Title: 

Content:
e drain, and overflow return lines, fuel oil transfer pumps, strainers, filters, valves, day tanks, and all components and piping up to the connections to the engine interfaces. The scope of review of the diesel engine fuel oil storage and transfer system for the plant included layout drawings, piping and instrumentation diagrams, and descriptive information for the system and 9.5.4-10 Revision 3 - March 2007 auxiliary supporting systems essential to its operation. Essential EDEFSS portions necessary for safe shutdown of the reactor or for mitigation of the consequences of an accident are designated to seismic Category I and Quality Group C. The basis for acceptance of the EDEFSS in our review was compliance of the design criteria and bases with NRC regulations as stated in the GDCs of Appendix A to 10 CFR Part 50. The staff concludes that the design is acceptable and meets the requirements of GDC 2, 4, 5 and 17. This conclusion is based on the following findings: A. The applicant has met the requirements of GDC 2, "Design Bases for Protection Against Natural Phenomena," for the ability of structures housing the EDEFSS 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 itself to withstand the effects of externally- and internally- generated missiles, pipe whip, and jet impingement forces of pipe breaks. The EDEFSS, except for the buried fuel oil storage tanks and related components and piping, is housed in a seismic Category I structure which protects against the effects of tornadoes, tornado missiles, turbine missiles, and floods. The buried portions also are protected from tornadoes, tornado and turbine missiles, and floods. This protection meets the positions of RG 1.115, "Protection Against Low-Trajectory Turbine Missiles," Position C.1, and "Tornado Design