Document: NUREG-0800
Document ID: 07d0f658-6bc5-4c2f-945b-45ffacf5d379
Document Type: srp
Title: ONSITE METEOROLOGICAL MEASUREMENTS PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600394.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.3
CFR Part: 
CFR Title: 

Content:
provided to permit access to and occupancy of the control room for the duration of accident conditions. Atmospheric dispersion estimates are significant inputs in assessments performed to demonstrate compliance with this requirement. 5. 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 dispersion factors for assessing offsite doses from airborne releases of radioactive material. Meeting the requirements for measurement of meteorological parameters during an accident or anticipated 2.3.3-7 Revision 3 - March 2007 operational occurrence provides assurance that those personnel responsible for managing the event will be fully informed about the potential consequences of airborne radiological releases. 6. Applicants and licensees generally show compliance with 10 CFR 20, Subpart D, by demonstrating that the annual average concentrations of radioactive material released in gaseous (and liquid) effluents at the boundary of the restricted area do not exceed the values specified in Table 2 of Appendix B to 10 CFR 20. 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 these regulations provides assurance that radiation