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:
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 when- ever the repair option is used. 6.4-18 Rev. 2 - July 1981 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) The following summarizes the X/Q's used in determining the control room operator dose for the subject plant: A. VENTILATION SYSTEM DESCRIPTION B. SKETCH OF SYSTEM (and inlets/sources if applicable) C. SUMMATION OF X/Q ANALYSIS Source/Receptor Type and Distance S/D Ratio Number of 22-l/20 Wind Direction Sectors that Result in Exposure Central Wind Sector K Factor (sector wind is blowing from) 40% Wind Speed (m/sec) 5% X/Q (sec/m 3) 5% Wind Speed (m/sec) Projected Area of Wake (m2) Wind Wind Time Speed Factor Direction Factor 0-8 hr 1 1 8-24 hr 1-4 day 4-30 day Occupancy Factor 1 1 0.6 0.4 Effective X/Q's 6.4-19 Rev. 2 - July 1981 D. ACTION REQUESTED Assigned Reviewer - For your information only - Please use the effective X/Q's in TACT run and provide control room doses. In addition, please summarize safety system assumptions and indicate their status (interim or final). Meteorologist - These are interim X/Q's. Please review to determine their reasonableness. - These are final X/Q's. Please determine if they are accurate based on your analysis of site data. Please Contact _ 6. 4-20 Rev. 2 - July 1981