Document: NUREG-0800
Document ID: bb1a5a83-5b12-456c-b141-1e450c066cff
Document Type: srp
Title: ONSITE METEOROLOGICAL MEASUREMENTS PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1818/ML18183A446.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.3
CFR Part: 
CFR Title: 

Content:
dation procedures, including summary of data validation checks (automated and manual) and data correction or substitution Guidance on a suitable onsite meteorological monitoring program to provide the required meteorological data is presented in Regulatory Guide (RG) 1.23, “Meteorological Monitoring Programs for Nuclear Power Plants” (Reference 5). 2. Data should include an hour-by-hour listing of the hourly-averaged parameters in the format described in Appendix A to RG 1.23, “Meteorological Monitoring Programs for Nuclear Power Plants.” Data recovery should be at least 90 percent on an annual cycle basis for individual variables, as well as for the joint recovery (at each wind measurement level) of concurrent wind speed, wind direction, and atmospheric stability. When an application submittal includes more than one annual cycle of onsite meteorological data, the data recovery objective applies to each annual cycle as well as the composite POR. a. CP applications should include at least one annual cycle (that is, a consecutive 12-month period) of onsite meteorological data. OL applications should include at least two consecutive cycles (and preferably 3 or more whole years, if available), including the most recent one-year period, at the time of application submittal. b. COL applications that do not reference an ESP as well as ESP application submittals should include at least two consecutive annual cycles (that is, a consecutive 24-month period) (and preferably 3 or more whole years, if available), that are no older than 10 years from the date of the application. If two years of onsite meteorological data are not available at the time the application is filed, a COL or ESP application should include at least one annual cycle of meteorological data collected onsite. The application should also include calculations of (1) the short-term atmospheric dispersion estimates for accident releases discussed in SRP Section 2.3.4, and (2) the long-term atmospheric