Document: NUREG-0800
Document ID: 723c7d66-7b0b-443a-af9b-ec3026461a0c
Document Type: srp
Title: - 12.4
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1130/ML113081427.pdf
Revision Date: 2023-06
Chapter: 12
Section ID: 12.3
CFR Part: 
CFR Title: 

Content:
active gases and particulates, will also be based on evidence that the applicant has applied the guidance of RG 8.8 or proposed acceptable alternatives. RG 1.52, particularly Sections C.3.10 and 4.10, provides guidance that can be used in this review, although the guide relates to mitigating accidents involving airborne radioactivity. Good practices in that regard apply to normal operation as well, since the release of radioactivity in normal operational occurrences is usually different only in quantity from some of the accident cases. 4. Area Radiation and Airborne Radioactivity Monitoring Systems A. The area radiation monitoring systems will be acceptable if they meet the provisions of 10 CFR 20.1501, 10 CFR 50.34(f)(2)(xvii); the guidance in NUREG-0737, RG 8.25, and RG 1.97, Revision 4; and the following criteria: i. The detectors are located in areas that normally may be occupied 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. 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 RG 8.25 and meets the