Document: NUREG-1555
Document ID: a43fee0d-ad03-4f3c-97d8-e21705b04eac
Document Type: esrp
Title: METEOROLOGY AND AIR QUALITY
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 2
Section ID: 2.7
CFR Part: 
CFR Title: 

Content:
sidence inversions of temperature) to ensure that they are applicable to the type and mode of releases from the plant. ` Examine the atmospheric transport and diffusion parameters for applicability to regional topographic and meteorological characteristics by considering the experimental bases for these parameters with respect to regional conditions. (3) Compare the meteorological data provided by the applicant for use in the atmospheric transport and diffusion models for compatibility with the models used and verify the completeness and adequacy of the description of regional atmospheric transport and diffusion characteristics as discussed in Regulatory Guides 1.23 and 1.111. ` Evaluate meteorological data for appropriateness of heights of measurements of wind speed, wind direction, and atmospheric stability. - Winds measured at the 10-m level and temperature difference measurements to indicate atmospheric stability between the 10-m level and height of the building or vent are acceptable for consideration of ground-level releases. - For releases considered elevated, winds reasonably representative of conditions at the height of release and reasonable estimates of the temperature of the atmospheric layer into which the effluent will be released are acceptable. ` Examine mixing height data for considerations of restrictions to the vertical spread of the effluent. ` Examine precipitation data for considerations of the effects of washout on estimates of atmospheric transport and diffusion. (4) Evaluate estimates of relative concentration (including consideration of radioactive decay during transport and depletion of radioiodines and particulates) and relative deposition used by the applicant for an assessment of the population doses resulting from routine releases of radioactive effluent to the atmosphere to verify that these estimates are complete and appropriate to regional conditions. These estimates should encompass all individuals living within 80 km of the