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:
he same time, the operating environment of equipment in the control room(s) of the unaffected unit(s) must be maintained within specified limits. GDC 5 requirements provide assurance that a failure or accident in one unit will not affect additional units of a multi-unit site. 9.4.1-7 Revision 3 - March 2007 4. Compliance with GDC 19 requires that the control room remain functional to the degree that actions can be taken to operate the nuclear power unit safely under normal conditions and to maintain the plant in a safe condition under accident conditions, including loss-of-coolant accidents. With regard to the CRAVS, GDC 19 requires that adequate protection against radiation and hazardous chemical releases be provided to permit access to and occupancy of the control room under accident conditions. Regulatory Guide 1.78 provide guidance acceptable to the staff for meeting these control room occupancy protection requirements. GDC 19 requirements provide assurance that access to and occupancy of the control room will be protected under accident conditions. 5. GDC 60 requires nuclear power unit designs to include provisions to control the release of radioactive materials entrained in gaseous effluents during normal reactor operation, including anticipated operational occurrences. RGs 1.140 and 1.52 offer design, testing, and inspection criteria acceptable to the staff for air filtration and adsorption units of normal ventilation systems and for post-accident engineered-safety-feature atmosphere cleanup systems in light-water-cooled nuclear power plants. Atmosphere cleanup systems are included in the design to reduce the quantities of radioactive materials entrained in gaseous effluents released to the environment. GDC 60 requirements provide assurance that release of radioactive materials entrained in gaseous effluents will not exceed specified 10 CFR Part 20 limits for normal operation and anticipated operational occurrences. 6. 10 CFR 50.63 requires a demonstration of