Document: NUREG-0800
Document ID: 010ad62f-cd7b-4f06-9f81-a781faf5701b
Document Type: srp
Title: ENGINEERED SAFETY FEATURE VENTILATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070560.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.4.5
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Auxiliary Plant Systems Branch (ASB SPLB)1 Secondary - None Emergency Preparedness and Radiation Protection Branch (PERB)2 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 ASB SPLB reviews the ESFVS from air intake to the point of discharge to the atmosphere 3 to ensure conformance with the requirements of General Design Criteria 2, 4, 5, 17, and 60 and 10 CFR 50.63. The review includes components such as air intakes, ducts, air-conditioning 4 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. These include the service water pump house, diesel generator area, emergency core cooling system (ECCS) 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. 1. The ASB SPLB reviews the ESFVS to determine the safety significance of the various 5 portions and subsystems. Based on this determination, the safety-related portions of the system are reviewed with respect to functional performance requirements associated with DRAFT Rev. 3 - April 1996 9.4.5-2 engineered safety feature areas during normal operation, during adverse environmental occurrences, and during and subsequent to postulated accidents, including the loss of offsite power. The ASB SPLB reviews safety-related portions of the system to ensure 6 that: a. A single active failure cannot result in loss of the system functional performance capabilities; and b. Failures of nonseismic Category I equipment or components will not result in