Document: NUREG-0800
Document ID: 55e187c7-8e17-41ed-a88e-0205d1317fb6
Document Type: srp
Title: - 12.4
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1315/ML13151A475.pdf
Revision Date: 2023-06
Chapter: 12
Section ID: 12.3
CFR Part: 
CFR Title: 

Content:
teria are in accordance with the guidelines of RGs 1.52 and 8.8. [List examples of exposure reduction features in the ventilation system] The applicant’s area radiation monitoring system is designed to (1) monitor the radiation levels in areas where radiation levels could become significant and where personnel may be present, (2) alarm when the radiation levels exceed preset levels to warn of increased radiation levels, and (3) provide a continuous record of radiation levels at key locations throughout the plant. To meet these objectives, the applicant plans to use [number] area monitors located in areas where personnel may be present and where radiation levels could become significant. The area radiation monitoring system meets the criteria of 10 CFR 50.34(f)(2)(xvii), 10 CFR Part 50, Appendix E VI.2(a),, Item II.F.1(3) of NUREG-0737, RG 1.97and BTP 7-10 and is equipped with local and remote audio and visual alarms and a facility for central recording. [List examples of other area monitoring system features] The design objectives of the applicants’ airborne radioactivity monitoring system are (1) to assist in maintaining occupational exposure to airborne contaminants ALARA, (2) to check on the integrity of systems containing radioactivity, and (3) to warn of unexpected release of airborne radioactivity to prevent inadvertent exposure of personnel. The applicant will install airborne radioactivity monitors in work areas where there 12.3-12.4-30 Revision 5 – September 2013 is a potential for airborne radioactivity. These airborne radioactivity monitors have the capability to detect DAC of the most restrictive particulate and iodine radionuclides in the area or cubicle of lowest ventilation flow rate within 10 hours(s) (usually denoted as 10 DAC-hrs). The applicant will provide portable continuous air monitors when needed to monitor air in areas not provided with fixed airborne radioactivity monitors. All airborne and area radioactivity monitors will be