Document: NUREG-0800
Document ID: 31337ac3-66c6-42b1-b9e0-1655cad200d1
Document Type: srp
Title: ONSITE METEOROLOGICAL MEASUREMENTS PROGRAMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070232.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.3
CFR Part: 
CFR Title: 

Content:
er distance is an integral aspect of the siting criteria for a nuclear power plant. Specified radiation dose guidelines are associated with the exclusion area and the low population zone. Verification that the proposed nuclear plant meets these radiation dose guidelines is accomplished by calculating expected offsite radiation doses using an assumed inventory of fission products available for release from the containment building, the expected containment leak rate, and site atmospheric diffusion characteristics. Diffusion characteristics are determined from meteorological measurements taken at the proposed plant site. Meeting these siting criteria provides assurance that offsite radiation doses from postulated accidents will not exceed the guideline doses specified in 10 CFR Part 100.22 3. 10 CFR Part 50, Appendix I, provides numerical guidelines for the ALARA criterion concerning radioactive material in light-water-cooled nuclear power reactor effluents. Sections 50.34a and 50.36a contain provisions designed to ensure that releases of radioactive material from nuclear power reactors to unrestricted areas during normal operation, including anticipated operational occurrences, are kept as low as practicable. Appendix I provides numerical guidance for this requirement. Meeting the requirements of the ALARA criterion provides assurance that radiation doses from normal operation and from anticipated operational occurrences will not result in exposures that could cause measurable damage.23 4. 10 CFR 50.47 and Appendix E to 10 CFR Part 50 specify requirements for emergency preparedness planning. Some emergency preparedness planning requirements focus on determining the magnitude, and assessing the impact, of radioactive releases to the environment. Hence, methods, systems, and equipment are required for assessing and monitoring offsite consequences. Meteorological parameters provide an integral part of the data needed to establish atmospheric dispersions for assessing