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:
emovable) must be designed to ensure that the failed valve component can be bypassed easily and safely and that the valve can be manipulated into an acceptable position. The electronic components must be isolated from other equipment to assureensure that the repair operations do not result in further equipment failure. 2. The location and positioning of the valve or damper must permit easy access from the control room for convenient repair, especially under applicable DBA conditions. 6.4-23 DRAFT Rev. 3 - April 1996 3. Appropriate control room instrumentation should be provided for a clear indication and annunciation of valve or damper malfunction. 4. Periodic manipulation of the valve or damper by control room operators should be required for training purposes and to verify proper manual operability of the valve or damper. 5. The need for manual manipulations of the failed valve or damper should not be recurrent during the course of the accident. Manipulation should not occur more than once during the accident. Adjustment or realignment of other parts of the system should be possible from the control room with the failed valve in a fixed position. 6. The time for repair used in the computation of control room exposures should be taken as the time necessary to repair the valve plus a one-half hour margin. No manual correction will be credited during the first two hours of the accident. 7. Compliance with the above criteria should be documented in the SAR whenever the repair option is used. DRAFT Rev. 3 - April 1996 6.4-24 TABLE 6.4-1 Summary Sheet for Control Room Dose Analysis MEMORANDUM TO: _____________________________ , AEB Lead Reviewer ______________________________, Meteorologist cc: Meteorology Section, AEB AEB Habitability Files CONCERNING CONTROL ROOM DOSE ANALYSIS FOR (Insert Plant Name)112 The following summarizes the X/Q's used in determining the control room operator dose for evaluation of the subject plant at the COL stage of review:113 A. VENTILATION