Document: NUREG-0800
Document ID: e1fb2732-c7c9-4bbf-99dc-ee2469f9ed6f
Document Type: srp
Title: - 12.4  RADIATION PROTECTION DESIGN FEATURES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070617.pdf
Revision Date: 2023-06
Chapter: 12
Section ID: 12.3
CFR Part: 
CFR Title: 

Content:
ntaminants as low as is reasonably achievable; (2) to check on the integrity of systems containing radioactivity; and (3) to warn of unexpected release of airborne radioactivity to prevent inadvertent overexposure 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 maximum permissible concentrations(s) in air (MPC) 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 MPC-hrs). The applicant will provide portable continuous air monitors DRAFT Rev. 3 - April 1996 12.3-18 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 Parts 20.20120.1501, 50.34, and 70.24, as 94 well as Regulatory Guides 1.97, 8.2, and 8.8, and ANSI Standard 13.1 1993, related to 95 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 which 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 (1) usable instrument range, and (2) the environment the instrument can withstand, and meeting the provisions of Section II.F.1(3) of NUREG-073710 CFR Part 50, §50.34(f)(2)(xvii) and Regulatory Guide 1.97. 96 Instrumentation to monitor for accidental criticality meets