Document: NUREG-1555
Document ID: d82f8007-705d-4b2b-b71e-c89f767b3572
Document Type: esrp
Title: METEOROLOGICAL MONITORING
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 6
Section ID: 6.4
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Content:
sion of direct measurement units to meteorological units ` accuracies involved in frequency and mode (instantaneous or average) of sampling ` time over which system outputs are averaged for final data disposition and accuracy of these data. (2) Because the instrument accuracy recommendations of Regulatory Guide 1.23 refer to overall system accuracy for instantaneous recorded values or time-averaged values, assess the overall system accuracy in addition to the component (sensor, recorder, and reduction) accuracies. The assessment should consist primarily of using statistical procedures for compound errors based on sensor accuracy, recorder accuracy, conversion of units accuracy, frequency and mode of sampling, and for error reduction by averaging. Data Screening In addition to the checks and calibration of the onsite meteorological instruments, October 1999 6.4-9 NUREG-1555 (1) Screen the recorded meteorological data to evaluate the data quality. (2) Review the data screening programs and program output to determine data quality, data validity, and data recovery rate. Examples of data screening programs are contained in NUREG-0917, Nuclear Regulatory Commission Staff Computer Programs for Use with Meteorological Data (Snell 1982). IV. EVALUATION FINDINGS The depth and extent of the input to the environmental impact statement (EIS) should be governed by the environmental characteristics of meteorology that could be affected by plant construction and operation and by the nature and magnitude of the expected impacts to the atmospheric environment. The following information should be included in the EIS: ` a brief summary description of the onsite preapplication meteorological measurements program(s) and other data collection programs used by the applicant, including - height and location of meteorological sensors by type - period of data record - data recovery - period of data record and meteorological parameters used for atmospheric diffusion estimates. ` when