Document: NUREG-0800
Document ID: 8ec28e2c-84e9-408b-afcb-1838fbfe7efc
Document Type: srp
Title: ENGINEERED SAFETY FEATURE VENTILATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550041.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.4.5
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of ventilation and air filtration Secondary - None I. AREAS OF REVIEW The function of the engineered safety feature ventilation system (ESFVS) is to provide a suitable and controlled environment for engineered safety feature components following certain anticipated transients and design-basis accidents. The organization responsible for the review of ventilation and air filtration reviews the ESFVS from the air intake to the point of discharge to the atmosphere to ensure compliance with the requirements of General Design Criteria (GDCs) 2, 4, 5, 17, and 60 and 10 CFR 50.63. The review includes such components as air intakes, ducts, air-conditioning units, flow control devices, isolation dampers, exhaust vents, and exhaust fans. The review of the ESFVS covers all ventilation systems utilized to maintain a controlled environment in areas containing safety-related equipment, including the service water pump house, diesel generator area, emergency core cooling system pump rooms, component cooling water pump room, auxiliary feedwater pump area, and other areas containing equipment essential for the safe shutdown of the reactor or necessary to prevent or mitigate the consequences of an accident. 9.4.5-2 Revision 3 - March 2007 The specific areas of review are as follow: 1. ESFVS review determines the safety significance of the various portions and subsystems. Based on this determination, the safety-related portions of the system are reviewed with respect to functional performance requirements associated with engineered safety feature areas during normal operation, during adverse environmental occurrences, and during and subsequent to postulated accidents, including the loss of offsite power. Safety-related portions of the system are reviewed to ensure that: A. A single active failure cannot result in loss of the system functional performance capabilities and B. Failures of nonseismic Category I