Document: NUREG-0800
Document ID: 9f13abda-ee55-4fa1-8276-db55ac2094ef
Document Type: srp
Title: CONTROL ROOM HABITABILITY SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070449.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.4
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Accident Evaluation Branch (AEB)Plant Systems Branch (SPLB)1 Secondary - Effluent Treatment Systems Branch (ETSB)Emergency Preparedness and Radiation Protection Branch (PERB)2 - Siting Analysis Branch (SAB)Materials and Chemical Engineering Branch (EMCB)3 I. AREAS OF REVIEW The control room ventilation system and control building layout and structures, as described in the applicant's safety analysis report (SAR), are reviewed with the objective of assuringensuring4 that plant operators are adequately protected against the effects of accidental releases of toxic and radioactive gases. A further objective is to assureensure that the control room can be maintained as the backup center from which technical support center personnel can safely operate in the case of an accident. To assure that these objectives are accomplished the following items are reviewed:These objectives are accomplished by the following:5 1. The zone serviced by the control room emergency ventilation system is examined to ascertain that all critical areas requiring access in the event of an accident are included within the zone (control room, kitchen, sanitary facilities, etc.) and to assureensure that those areas not requiring access are generally excluded from the zone. 2. The capacity of the control room in terms of the number of people it can accommodate for an extended period of time is reviewed to confirm the adequacy of self-contained DRAFT Rev. 3 - April 1996 6.4-2 breathing apparatus and to determine the length of time the control room can be isolated before CO levels become excessive. 2 3. The control room ventilation system layout and functional design is reviewed to determine flow rates and filter efficiencies for input into the analyses of the buildup of radioactive or toxic gases inside the control room, assuming a design basis release. Basic deficiencies that might impair the effectiveness of the system are examined. In addition, the system operation