Document: NUREG-0800
Document ID: bfe08773-10ce-45c6-9767-3cbe51c1726f
Document Type: srp
Title: - 12.4
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070720019.pdf
Revision Date: 2023-06
Chapter: 12
Section ID: 12.3
CFR Part: 
CFR Title: 

Content:
upied without restricted access and that may have a potential for radiation fields in excess of the radiation zone designations discussed in the third paragraph under item 1, above, in accordance with ANSI/ANS-HPSSC-6.8.1. ii. The detectors provide on-scale readings of dose rate that include the design maximum dose rate of the radiation zone in which they are located as well as the maximum dose rate for anticipated operational occurrences and accidents. iii. The detectors are calibrated during fuel outages and after the performance of any maintenance work on the detector. iv. Each monitor has a local audible alarm and variable alarm set points. Monitors located in high noise areas should also have visual alarms. 12.3-12.4-12 Revision 3 - March 2007 v. Readout and annunciation are provided in the control room. vi. The in-containment high-range radiation monitors meet the criteria of 10 CFR 50.34(f)(2)(xvii). vii. Emergency power is initiated after a loss of offsite power. B. The airborne radioactivity monitoring system will be acceptable if it is consistent with the guidance on continuous air sampling in Regulatory Guide 8.25 and meets the following criteria: i. Engineering controls provide the principal protection against the intake of radioactive materials. ii. Air should be sampled at normally occupied locations where airborne radioactivity may exist, such as solid waste handling areas, spent fuel pools, reactor operating floors, and BWR turbine buildings. The monitoring system should be capable of detecting 10 DAC-hours of particulate and iodine radioactivity from any compartment that has a possibility of containing airborne radioactivity and that normally may be occupied by personnel, taking into account dilution in the ventilation system. Continuous monitoring of air being exhausted from locations within the facility during normal operation is an acceptable method. Noble gas monitors should be calibrated such that, when monitoring for 133Xe, the instrument