Document: NUREG-0800
Document ID: f8502678-c803-47fd-90e8-98197a427d04
Document Type: srp
Title: TURBINE AREA VENTILATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550040.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.4.4
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of ventilation and air filtration I. AREAS OF REVIEW The function of the turbine area ventilation system (TAVS) is to maintain ventilation, permit personnel access, and control the concentration of airborne radioactive material in the turbine area during normal operation, anticipated operational occurrences, and after any accident that results in a release of radioactive material. The staff reviews the TAVS from the air intake to the point of discharge to ensure compliance with the requirements of General Design Criteria (GDCs) 2, 5, and 60. The review includes components such as air intakes, ducts, air-conditioning units, blowers, isolation dampers, filters, and exhaust fans. The review of the TAVS includes systems contained in the turbine building and their relationship, if any, to safety-related equipment areas. The specific areas of review are as follows: 1. The functional performance requirements and the methods and equipment provided for air treatment equipment for the TAVS to determine whether the ventilation system or portions of the system have been designed or need to be designed as a safety-related system. In making this determination, systems provided for heating, ventilating, and air 9.4.4-2 Revision 3 - March 2007 conditioning of the turbine area, designed to normal industrial standards, and those systems that provide for control and filtration of small quantities of radioactive gas leakage in the turbine area during normal plant operation, are not considered safety- related for the purpose of this Standard Review Plan (SRP) section. Based on this determination, any safety-related portions of the system are reviewed with respect to functional performance requirements during adverse environmental occurrences, normal operation, anticipated operational occurrences, and subsequent to postulated accidents, including the loss of offsite power. Safety-related portions of the system are