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
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Content:
adioactive 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 and procedures are reviewed. 4. The physical location of the control room with respect to potential release points of hazardous airborne materials is reviewed. The layout of the control building is reviewed to assureensure that airborne materials will not enter the control room from corridors or ventilation ducts, etc. 5. Radiation shielding provided by structural concrete is analyzed to determine the effectiveness of shielding and structure surrounding the control room. The control building layouts are checked to see if radiation streaming through doors or other apertures or from equipment might be a problem. 6. Independent analyses are performed to determine the radiation doses and toxic gas concentrations. Estimates of dispersion of airborne contamination are made in conjunction with the assigned meteorologist.6 Review Interfaces7 1. The SPLB performs the following reviews as part of its primary review responsibility under the Standard Review Plan (SRP) sections indicated: a. The emergency standby atmosphere filtration system and iodine removal efficiencies of the control room atmosphere filtration system, as part of its responsibility for SRP Section 6.5.1. b. The design of the control room ventilation system, as part of its responsibility for SRP Section 9.4.1. c. The storage and location of CO or other firefighting materials, as part of its 2 responsibility for SRP Section 9.5.1.8 2. The SPLB will coordinate evaluations performed by other branches that interface with the overall evaluation of the control room habitability system, as follows:9 a. The Civil Engineering and Geosciences Branch (ECGB) will evaluate potential sources of hazardous gas as part of its primary review responsibility for SRP Section 2.2.1-2.2.2. The ECGB will provide SPLB with a description