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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Content:
e regarding the criteria for an onsite meteorological measurements program to collect the basic meteorological data needed to support plant licensing and operation. Compared to the original (and still official) version of Regulatory Guide 1.23, this proposed revision better reflects current regulatory requirements and best practices. 2. Objective The objective of this regulatory action is to update the NRC’s guidance with respect to the criteria for an onsite meteorological measurements program for the collection of basic meteorological data needed to support plant licensing and operation. The updated regulatory guide better reflects current regulatory requirements and best practices compared to the original (and official) version of Regulatory Guide 1.23. 3. Alternative Approaches The NRC staff considered the following three alternative approaches to the problem of outdated guidance regarding the criteria for a suitable onsite meteorological measurements program: (1) Do not revise Regulatory Guide 1.23. (2) Endorse ANSI/ANS-3.11-2005, “Determining Meteorological Information at Nuclear Facilities.” (3) Update Regulatory Guide 1.23. DG-1164, Page 16 3.1 Alternative 1: Do Not Revise Regulatory Guide 1.23 Under this alternative, the NRC would not revise this guidance, and applicants and licensees would continue to use the original version of this regulatory guide. This alternative is considered the baseline or “no action” alternative and, as such, involves no value/impact considerations. 3.2 Alternative 2: Endorse ANSI/ANS-3.11-2005 Under this alternative, the NRC would endorse ANSI/ANS-3.11-2005. Whereas ANSI/ANS- 2.5-1984 was primarily intended to support licensing applications of commercial nuclear power plants, ANSI/ANS-3.11-2005 has an expanded scope that includes nuclear installations at Federal sites, ranges, and reservations (e.g., U.S. Department of Energy and Department of Defense facilities). Because the nature and extent of the radiological and