Document: NUREG-0800
Document ID: 615ce987-401a-49b0-a317-08e4662db9df
Document Type: srp
Title: AUXILIARY AND RADWASTE AREA VENTILATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550039.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.4.3
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 auxiliary and radwaste area ventilation system (ARAVS) is to maintain ventilation, permit personnel access, and control the concentration of airborne radioactive material in the auxiliary and radwaste equipment areas during normal operation and anticipated operational occurrences, and after postulated accidents. The staff reviews the ARAVS from 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 the requirements of General Design Criteria (GDCs) 2, 5, and 60. The review includes such components as air intakes, ducts, air conditioning units, filters, blowers, isolation dampers, and exhaust fans. The review of the ARAVS covers the radwaste and controlled-access nonradioactive areas and their relationships to safety-related areas in the auxiliary building. The specific areas of review are as follows: 1. The functional performance requirements and the air treatment equipment for the ARAVS are reviewed to determine whether the ventilation system or portions of the system have been designed or need to be designed as a safety-related system. Based on this determination, the safety-related portions of the system are reviewed with respect to functional performance requirements during normal operation, 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: 9.4.3-2 Revision 3 - March 2007 A. A single active failure can not result in loss of the system functional performance capability. B. Failures of nonseismic Category I equipment or components will not affect the ARAVS. 2. The staff also reviews safety-related portions of the ARAVS with respect to the following: A. The capability to