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:
ed power output or causing engine shutdown as a consequence of any meteorological or accident condition. 4. The SAR is reviewed to verify that if the intake air flow or engine exhaust depends upon the actuation of flow control devices (louvers, dampers), the EDECAIES will function if there is a failure of an active component. 5. The SAR is reviewed to assure that the system components exposed to atmospheric conditions (dust storms, rain, ice, snow) are protected from possible clogging during standby or operation system. 9.5.8-8 Revision 3 - March 2007 6. The reviewer verifies whether the system will function as required in other adverse natural phenomena. The reviewer evaluates the system to determine that: A. The failure of nonessential portions of the system or of other systems not designed to seismic Category I requirements and located close to essential portions of the system, or of non-seismic Category I structures that house, support, or are close to essential portions of the EDECAIES, will not preclude operation of the system. Reference to SAR sections describing site features and the general arrangement and layout drawings and SAR tabulation of seismic design classifications for structures and systems will be necessary. Statements in the SAR that verify that the above conditions are met are acceptable. B. Essential EDECAIES portions are protected from the effects of floods, hurricanes, tornadoes, and internally or externally-generated missiles. Flood protection and missile protection criteria are discussed and evaluated in detail under the SRP sections for Chapter 3 of the SAR. The location and the design of the systems and structures are reviewed to determine that the degree of protection provided is adequate. A statement to the effect that the system is located in a seismic Category I structure that is tornado- missile and flood-protected, or that components of the system will be located in individual cubicles or rooms that will withstand the effects of