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:
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 is a potential for airborne radioactivity. These airborne radioactivity monitors have the capability to detect derived air concentrations in air (DAC) of the most restrictive particulate and iodine radionuclides in the area or cubicle of 12.3-12.4-19 Revision 3 - March 2007 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 calibrated periodically. [List examples of other airborne radioactivity monitoring features.] The objectives and location criteria of [plant name] area and airborne radiation monitoring systems are in conformance with those portions of 10 CFR 20.1501; 10 CFR 50.34, 10 CFR 52.47, or 10 CFR 52.79; and 10 CFR 50.68, as well as Regulatory Guide 1.97, Revision 3, and Regulatory Guide 8.8, related to radiation and airborne radioactivity monitoring. The objective of the applicant’s accident radiation monitoring system is to provide the capability to assess the radiation hazard in areas that may be occupied during the course of an accident. The installed instruments have emergency power supplies, and the portable instruments are placed to be readily accessible to personnel responding to an emergency. The systems are designed for use in the event of an accident in terms of usable instrument range and the environment the instrument can withstand, and meet the provisions of 10 CFR 50.34(f)(2)(xvii), item II.F.1(3) of NUREG-0737, and Regulatory Guide 1.97, Revision 3. Instrumentation to monitor plant areas where fuel is handled and stored meets the criteria of 10 CFR 50.68 and GDC 63 in Appendix A to 10 CFR Part 50 and is