Document: NRC Regulatory Guide
Document ID: 29acb072-d497-44e6-ac1c-a053c0a468a0
Document Type: regulatory_guide
Title: Meteorological Monitoring Programs for Nuclear Power Plants + HISTORY - HISTORY DG-1164 , Third Proposed Revision 1, published 10/2006 Draft ES 926-4 , Second Proposed Revision 1, entitled "Meteorological Measurement Program for Nuclear Power Plants," published 04/1986 Draft SS 926-4 , First Proposed Revision 1, entitled "Meteorological Programs In Support of Nuclear Power Plants," published 09/1980 Revision 0, entitled "Onsite Meteorological Programs," was issued as Safety Guide 23
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0625/ML062540408.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.23
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continuously assessing the impact of the release of radioactive materials to the environment. These plans must also include a standard emergency classification and action level scheme for determining minimum initial offsite response measures. In addition, if plant meteorological program parameters (i.e., wind speed, wind direction, and an indicator of atmospheric stability) are available on in-plant computer systems, they must be made available in a digital data stream to the Emergency Response Data System (ERDS) maintained by the U.S. Nuclear Regulatory Commission (NRC), pursuant to Section VI of Appendix E to 10 CFR Part 50.1 In this regard, it is necessary for the applicant to establish and maintain a meteorological program capable of rapidly assessing critical meteorological parameters. In addition, in 10 CFR Part 50, Appendix I, “Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion ‘As Low as is Reasonably Achievable’ for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor Effluents,” provides numerical guidance for the design objectives of equipment intended to control releases of radioactive material in effluents from nuclear power reactors. An assessment of the maximum potential annual radiation dose to the public resulting from the routine release of radioactive materials in gaseous effluents is required to assist in demonstrating that operations will be or are being conducted within the limits of 10 CFR Part 20, “Standards for Protection Against Radiation,” and Appendix I to 10 CFR Part 50 and to ensure that effluent control equipment design objectives and proposed operating procedures meet the Commission’s requirements for keeping levels of radioactive material in effluents to unrestricted areas as low as practicable. In addition, 10 CFR 50.36a(a)(2) requires nuclear power plant licensees to submit a report to the Commission annually that specifies the quantity of each of the