Document: NRC Regulatory Guide
Document ID: 5f67f910-de21-4629-9b03-b5a9f09c3c66
Document Type: regulatory_guide
Title: 
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0037/ML003739544.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.6
CFR Part: 
CFR Title: 

Content:
May 1974 U.S. ATOMIC ENERGY COMMISSION REGULATORY GUIDE DIRECTORATE OF REGULATORY STANDARDS REGULATORY GUIDE 4.6 MEASUREMENTS OF RADIONUCLIDE•IN THE ENVIRONMENT STRONTIUM-89AND STRONTIUM-90 ANALYSES A. INTRODUCTION General Design Criterion 64, "Monitoring Radioactivity Releases," of Appendix A, "General Design -Criteria for Nuclear Power Plants," to 10 CFR Part 50, "Licensing of Production and Utilization Facilities," requires that means be provided for monitoring the plant environs of light-water-cooled nuclear power plants for radioactivity that may be released from normal operations, including anticipated operational occurrences, and from postulated accidents. Paragraph 50.36a (a.X2) of 10 CFRPart 50 provides that technical specifications for each operating license for a nuclear power reactor will include a requirement that the licensee submit a report to the Commission within 60 days after January 1 and July 1 of each year which, in addition to specifying the quantity of each of the principal radionuclides released to unrestricted areas in liquid and airborne effluents during the previous six months of operation, provides sufficient information to estimate annual radiation doses to the public resulting from effluent releases. Paragraph 20.106(e) of 10 CFR Part 20,"Standards for Protection Against Radiation," provides that the Commission may limit the quantities of radioactive materials released in air or water by licensees during a specified period of time if it appears that the daily intake of radioactive materials from air, water, or food by a suitable sample of an exposed population group, averaged -over a time period not exceeding one year, would otherwise exceed specified quantities. Section 20.201, "Surveys," of 10 CFR Part 20 requires that a licensee conduct surveys of levels of radiation or concentrations of radioactive material as necessary for compliance with AEC regulations in 10 CFR Part 20. Paragraph 20.1(c) of 10 CFR Part 20 states that every