Document: NUREG-0800
Document ID: 4cf3fa16-4c16-442f-9f37-a4f430fc022d
Document Type: srp
Title: EMERGENCY DIESEL ENGINE COMBUSTION AIR INTAKE AND EXHAUST SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350043.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.8
CFR Part: 
CFR Title: 

Content:
reviewed to ascertain that sufficient space has been provided around the components to permit inspection of the system components. 3. The SAR is reviewed to assure that the arrangement and location of the combustion air intake and exhaust are such that dilution or contamination of the intake air by exhaust products, fire extinguishing (gaseous) medium, or other gases that may intentionally or accidentally be released on site will not preclude operation of the diesel engines at rated power output, or cause 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 is dependent upon the actuation of flow control devices (louvers, dampers), the EDECAIES wll function if there is a failure of an active component. 5. The SAR is reviewed to.assure that system components exposed to atmospheric conditions (dust storms, rain, ice, snow) are protected from possible clogging during standby or operation of the system. 6. The reviewer verifies that the system will function as required in the event of other adverse natural phenomena. The reviewer evaluates the system, using engineering judgment and failure modes and effects analyses to determine that: 9.5.8-4 Rev. 2 - July 1981 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 will be necessary, as well as the SAR tabulation of seismic design classifications for structures and systems.. Statements in the SAR that verify that the above conditions are met are acceptable. b. The essential portions of the system are protected from the effects of floods,