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:
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 generators with an EDECAIES not shared between other diesel generators. 3. The applicant has met the requirements of GDC 17, "Electric Power Systems," for the ability of combustion air intake and exhaust systems to meet independence and redundancy criteria. Each EDECAIES is independent and physically separated from the other system serving the redundant diesel generators. A single failure in any one of the two systems will affect only its own diesel generator. Each system is sized and physically arranged for no degradation of engine function when the diesel generator set must operate continuously at maximum rated power output. The air intakes are located meters ( feet) above plant grade and adequate filters are provided to minimize airborne particulate material (dust) from entering the system. Suitable design precautions preclude degradation of the diesel engine power output due to recirculation of exhaust gases and ingestion of other adulterates that would reduce the oxygen content below acceptable levels. The applicant has also met the positions of NUREG/CR-0660, "Enhancement of Onsite Emergency Diesel Generator Reliability." For DC and COL reviews, the findings will also summarize the staff’s evaluation of requirements and restrictions (e.g., interface requirements and site parameters) and COL action items relevant to this SRP section. In addition, to the extent that the review is not discussed in other SER sections, the findings will summarize the staff's evaluation of the ITAAC, including design acceptance criteria, as applicable. V. IMPLEMENTATION The staff will use this SRP section in performing safety evaluations of DC