Document: NUREG-0800
Document ID: 91b47227-679e-4e3e-95a7-e32002caa9a9
Document Type: srp
Title: EMERGENCY DIESEL ENGINE COMBUSTION AIR INTAKE AND EXHAUST
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550033.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.8
CFR Part: 
CFR Title: 

Content:
e bases for those conclusions. The EDECAIES includes all components and piping of the air intake system from the atmospheric air intake to its connection to the engine interface and all components and piping of the exhaust system from its connection to the engine interface to where it exhausts to the atmosphere. The scope of the EDECAIES review included layout drawings, P&IDs, and descriptive information for the EDECAIES and auxiliary supporting systems essential to its safe operation. The essential portions of the EDECAIES necessary for 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 EDECAIES design is acceptable and meets the requirements of GDC 2, 4, 5, and 17. This conclusion is based on the following findings: 1. The applicant has met the requirements of GDC 2, "Design Bases for Protection Against Natural Phenomena," for the ability of structures housing the EDECAIES 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 structures housing the system and the system itself able to withstand the effects of externally and internally generated missiles, pipe whip, and jet impingement forces of pipe breaks. The EDECAIES is housed in a seismic Category I structure 9.5.8-10 Revision 3 - March 2007 which protects it from the effects of tornados, tornado missiles, turbine missiles, and floods. The exposed portions of the system are also protected from tornadoes, 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