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:
eptable data recovery are specified in RG 1.23 e. Data Acquisition and Reduction The methods used for data acquisition, processing, and validation (automated and manual) are evaluated. Since there are many methods of acquiring data from meteorological measurement systems that are acceptable to the staff, the review procedure varies. Information regarding the basic components of the monitoring program which is reviewed to ascertain the acceptability of data acquisition and reduction includes: (1) accuracy of direct measurements and their precision, (2) accuracy in conversion of direct measurement units to meteorological units, (3) adequacy of frequency and mode (instantaneous or average) of sampling, (4) averaging times, reporting intervals of system outputs, and averaging methods for consistency with how the data are to be used, and (5) identification and handling of suspect data. Since the accuracy criteria in RG 1.23 refer to overall system accuracy for time- averaged values, the overall system accuracy (sensor, recorder, and data 2.3.3-13 Draft Revision 4 – September 2018 reduction) is evaluated in addition to checking the component accuracies. The evaluation consists primarily of using statistical procedures for compound errors, based on sensor accuracy, recorder accuracy, conversion of units accuracy, and frequency and mode of sampling (Reference 7). f. Special Considerations for Complex Terrain and Remote Sites At some sites, because of complex flow patterns in non-uniform terrain, additional wind and temperature instrumentation and more comprehensive monitoring programs may be necessary. For example, the representation of circulation for a hill-valley complex or a site near a large body of water may need additional measuring locations to determine airflow patterns and spatial variations of atmospheric stability. Occasionally the unique dispersion characteristics of a particular site may also warrant the use of special meteorological instrumentation and/or