Document: NUREG-0800
Document ID: 7bdf9a80-e0a1-48fe-a048-0d2501e0ff68
Document Type: srp
Title: EMERGENCY DIESEL ENGINE COMBUSTION AIR INTAKE AND EXHAUST
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070573.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.8
CFR Part: 
CFR Title: 

Content:
shared between the diesel generators. 3. The applicant has met the requirements of GDC 17, "Electric Power Systems," with respect to the capability of combustion air intake and exhaust system to meet independence and redundancy criteria. Each EDECAIES is independent and physically separated from the other system serving the redundant diesel generators. Single failure in any one of the two systems will affect only the associated diesel generator. Each system is sized and physically arranged such that no degradation of engine function will be experienced when the diesel generator set is required to operate continuously at maximum rated power output. The air intakes are located meters ( feet) above plant grade and adequate 53 filters are provided to minimize airborne particulate material (dust) from entering the system. Suitable design precautions have been taken to preclude degradation of the diesel engine power output due to recirculation of exhaust gases and ingestion of other dilutents that would reduce the oxygen content below 54 acceptable levels. This meets the position of Regulatory Guide 1.9, "Selection, Design, and Qualification and Testing of Emergency Diesel Generator Units Used as StandbyClass 1E (Onsite) Electric Power Systems at Nuclear Power Plants." 55 The applicant has also met the positions of Branch Technical Position ICSB-17 (PSB), "Diesel Generator Protective Trip Circuit Bypasses," and56 NUREG/CR-0660, "Enhancement of Onsite Emergency Diesel Generator Reliability." The applicant has met the requirements of the following industry standards: IEEE Standard 387, "IEEE Standard Criteria for Diesel Generator 9.5.8-11 DRAFT Rev. 3 - April 1996 Units Applied as Standby Power Supplies for Nuclear Power Generating Stations," and Diesel Engine Manufacturers Associated (DEMA) Standard. If the applicant proposes to designate an emergency diesel generator as the AAC source in response to a station blackout event, the following finding should be included: The