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:
ts 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 review for SRP Section 6.4, “Control Room Habitability.” The organization responsible for the review of ventilation and air filtration reviews safety-related portions of the system to assure that: A. A single active failure cannot result in loss of system functional performance capability. B. Failures of nonseismic Category I equipment or components will not affect the CRAVS. 2. The ability of the control room heating and cooling subsystems to maintain a suitable ambient temperature for control room personnel and equipment. 3. The ability to detect, filter, or expedite safe discharge of airborne contaminants inside the control room. 4. The capability to detect the need for isolation and to isolate portions of the system in the event of fires, failures, or malfunctions, and the capability of the system to function under such conditions. 5. The ability of essential equipment serviced by the ventilation system to function under the worst anticipated degraded CRAVS performance. 6. The capability to actuate components not normally operating that are required to operate during accident conditions and to provide necessary isolation. 7. The expected environmental conditions in areas served by the CRAVS and the extent, if any, to which the CRAVS is relied upon to function for a station blackout event. 8. Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC). For design certification (DC) and combined license (COL) reviews, the staff reviews the applicant’s proposed ITAAC associated with the structures, systems, and components (SSCs) related to this SRP section in accordance with SRP Section 14.3, “Inspections, Tests, Analyses, and Acceptance Criteria.” The staff recognizes that the review of ITAAC cannot be completed until after the rest of this portion of the