Document: NUREG-0800
Document ID: 50c5f9b6-d85c-4012-a8e9-48eaaafff93e
Document Type: srp
Title: CONTROL ROOM AREA VENTILATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550045.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.4.1
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for review of ventilation and air filtration Secondary - None I. AREAS OF REVIEW The control room area ventilation system (CRAVS) provides a controlled environment for the comfort and safety of control room personnel and assures the operability of control room components during normal operating, anticipated operational transient, and design-basis accident conditions. Portions of the CRAVS also may be relied upon to ensure coping with and recovering from a station blackout event. The organization responsible for the review of ventilation and air filtration reviews the CRAVS from the air intake to the point of discharge where the system connects to the gaseous cleanup and treatment system or station vents to ensure compliance with General Design Criteria (GDCs) 2, 4, 5, 19, and 60 and 10 CFR 50.63. The review includes such components as air intakes, ducts, air conditioning units, filters, blowers, isolation dampers, and exhaust fans. CRAVS review covers the control room, switchgear and battery room, access control area, control building heating, ventilating, and air conditioning equipment room, and computer room. The specific areas of review are as follows: 1. The organization responsible for the review of ventilation and air filtration reviews the CRAVS to determine the safety significance of the system. Based on this determination, the safety-related portions of the system are reviewed with respect to the functional performance requirements to maintain the habitability of the control room area and other safety-related areas served by the CRAVS during adverse environmental occurrences, normal operation, anticipated operational occurrences, and subsequent to postulated accidents. The review includes the effects of radiation, combustion, other 9.4.1-2 Revision 3 - March 2007 toxic products, and the coincidental loss of offsite power. The review of this Standard Review Plan (SRP) section interfaces with the