"R" in the numeric designation signifies that the 2005 standard was reaffirmed (recertified) as an American National Standard in 2010. No changes can be made to a standard during reaffirmation.
This document provides criteria for gathering and assembling meteorological information at commercial nuclear electric generating stations, U.S. Department of Energy / National Nuclear Security Administration nuclear facilities, and other national or international nuclear facilities. Meteorological data collected, stored, and displayed through implementation of this standard are utilized to support the siting, operation, and decommissioning of nuclear facilities. The meteorological data are employed in determining environmental impacts, consequence assessments supporting routine release and design-basis accident evaluations, emergency preparedness programs, and other applications.