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:
dispersion models. The NRC is moving the criterion to submit an electronic copy of the hourly database, already discussed in Standard Review Plan Section 2.3.3, into Regulatory Guide 1.23. 12. Clarify that the preoperational monitoring program should provide an adequate basis for atmospheric transport and diffusion estimates for the exclusion area boundary, the outer boundary of the low-population zone, and the hypothetical maximally exposed member of the public. This change ensures that the meteorological monitoring system can effectively support the collection of meteorological data for use in developing site atmospheric dispersion characteristics as specified in 10 CFR 100.21(c). 13. Clarify that the plant’s operational meteorological monitoring program should provide an adequate basis for atmospheric transport and diffusion estimates within the plume exposure emergency planning zone. This change ensures that the meteorological monitoring system can effectively support the collection of meteorological data for use in determining the magnitude of and for continuously assessing the impact of the accidental release of radioactive materials to the environment as specified in Appendix E to 10 CFR Part 50. Proposed Change Basis Appendix A to DG-1164, Page A-6 14. Add a criterion that 15-minute average values of all the meteorological channels required for input to the emergency response dose models should be available for real-time display in the appropriate emergency response facilities. This change ensures that the meteorological monitoring system can effectively support the collection of meteorological data for use in determining the magnitude of and for continuously assessing the impact of the accidental release of radioactive materials to the environment as specified in Appendix E to 10 CFR Part 50. Most currently operating nuclear power plants use the 15-minute average criterion for meteorological data as specified in the first proposed Revision 1 to Regulatory