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:
) and any offsite equipment and instrumentation used by the applicant in their atmospheric dispersion analyses. As a minimum, the description should include: a. Instrument Siting • a site map (drawn to scale) that shows plant and True North, the tower’s grade elevation, and the tower location with respect to man-made or natural features that may affect onsite meteorological measurements (such as buildings; paved and improved surfaces; cooling towers and ponds; hills; trees; bodies of water) • distances to nearby obstructions to air flow in each downwind sector • exposure and orientation of instruments • lightning protection system b. Meteorological Sensors • parameters measured and elevations of measurements • types of instruments (such as cup, propeller, vane, or sonic anemometers; resistance temperature detectors (RTDs) or thermistor-type temperature sensors; chilled mirror or lithium chloride dew point sensors); however, details regarding makes and model numbers are not necessary • instrument performance specifications (such as sensor and system accuracies; wind sensor starting thresholds; channel measurement resolutions and ranges) c. Recording of Meteorological Sensor Output • data output and recording systems, including (for OL and COL applications) locations of data displays d. Instrument Surveillance • summaries of calibration and maintenance procedures and frequencies e. Data Acquisition and Reduction • data acquisition and processing procedures, such as data sampling rates, averaging times, and methods for developing data averages (for example, wind speed and direction scalar versus vector averaging) consistent with regulatory and industry guidance and how the data will be used 2.3.3-6 Draft Revision 4 – September 2018 • data validation 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