Document: NUREG-0800
Document ID: 8c2fce42-281a-4a50-9de7-513df024f27c
Document Type: srp
Title: CONTROL ROOM HABITABILITY SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340712.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.4
CFR Part: 
CFR Title: 

Content:
NCE CRITERIA The control room habitability system design is acceptable if the requirements of the following regulations are met: a. General Design Criterion 4, "Environmental and Missile Design Bases" (Ref. 1), as it relates to accomodating the effects of and being compatible with postulated accidents, Including the effects of the release of toxic gases. b. General Design Criterion 5, "Sharing of Structures, Systems and Components" (Ref. 2), as it relates to facilities which have a single control room for more than one nuclear power unit and with 6.4-2 Rev. 2 - July 1981 respect to ensuring that such sharing will not significantly impair the ability to perform safety functions, including, in the event of an accident in one unit, an orderly shutdown and cooldown of the remaining unit(s). c. General Design Criterion 19, "Control Room" (Ref. 3), as it relates to maintaining the control room in a safe, habitable condition under accident conditions by providing adequate protection against radia- tion and toxic gases. The specific criteria necessary to meet the relevant requirements of General Design Criteria 4, 5 and 19 and to assure that the control room habitability positions of item III.D.3.4 of NUREG-0737 (Ref. 4) are met are as follows: 1. Control Room Emergency Zone Tne control room emergency zone should include the following: a. instrumentation and controls necessary for a safe shutdown of the plant, i.e., the control room, including the critical document reference file, b. computer room, if it is used as an integral part of the emergency response plan, c. shift supervisor's office, and d. operator wash room and the kitchen. 2. Ventilation System Criteria The ventilation system is reviewed by ASB under SRP Section 9.4.1, "Control Room Area Ventilation System." The AEB reviewer ascertains from the ASB if the following system performance and availability criteria are met: a. Isolation dampers - dampers used to isolate the control zone from adjacent zones or the