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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CFR Title: 

Content:
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 hazardous chemical materials present at Federal sites can differ significantly from similar materials present at commercial nuclear power plants, ANSI/ANS-3.11-2005 provides additional guidance beyond what the NRC considers to be basic meteorological monitoring program criteria applicable to commercial nuclear power plants. Consequently, wholesale NRC endorsement of ANSI/ANS-3.11-2005 would place unnecessary regulatory burden on NRC applicants and licensees. Partial endorsement of ANSI/ANS-3.11-2005 would be confusing. 3.3 Alternative 3: Update Regulatory Guide 1.23 Under this alternative, the NRC would update Regulatory Guide 1.23 to better reflect current regulatory requirements and best practices. The revision would use guidance provided in ANSI/ANS- 3.11-2005, where appropriate, with explicit references to NRC regulatory requirements. The benefit of this action would be the added assurance that the meteorological data collected by applicants and licensees are adequate to represent onsite meteorological conditions needed to determine environmental impacts of the plants, perform consequence assessments supporting routine release and design-basis accident evaluations, and support emergency preparedness programs and other applications at power reactor sites. Guidance would be specific to commercial nuclear power plants. The cost to the NRC would be relatively small, limited to the one-time cost of issuing the revised regulatory guide. Applicants and licensees would incur little cost in implementing the updated guidance (compared to the current official version of Regulatory Guide 1.23) because the only additional meteorological channel specified in the third proposed Revision 1 of Regulatory Guide 1.23 is precipitation. 4. Conclusion Based on this regulatory analysis,