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:
sential portions, are classified seismic Category I. Component and system descriptions in the SAR that identify mechanical and performance characteristics are reviewed to verify that the above seismic classification has been included, and that the P&IDs indicate any points of change in design classification. C. Design provisions have been made that permit appropriate inservice inspection and functional testing of system components important to safety. Compliance with the industry standard American Society for Testing and Materials (ASTM) D3803-89, “Standard Test Methods for Radiological Testing of Nuclear-Grade Gas-Phase Adsorbers,” should be demonstrated. The design is acceptable if the SAR information delineates a testing and inspection program and if the system drawings show the necessary test recirculation loops around fans or isolation dampers that would be required by this program. 3. The reviewer verifies that the essential portion of the system has been designed so that system function will be maintained as required in the event of an earthquake or loss of offsite power. The reviewer evaluates the system, using engineering judgment and the results of failure modes and effects analyses to determine that: A. The failure of nonessential portions of the system or of other systems not designed to seismic Category I standards and located close to essential portions of the system, or of nonseismic Category I structures that house, support, or are close to essential portions of the ARAVS, will not preclude their operation. 9.4.3-7 Revision 3 - March 2007 Reference to SAR sections describing site features and the general arrangement, to layout drawings, and to the SAR tabulation of seismic design classifications for structures and systems will be necessary. Statements in the SAR that verify that the above conditions are met are acceptable. B. Components and subsystems necessary for preventing the release of radioactive contaminants can function as required in the