Dose-to-Man Program progress report, FY 1973

The Dose-to-Man Program at the Savannah River Plant (SRP) was conceived in FY-1972 and operations began in FY-1973. The major objectives of the program are to develop (or adapt), test, and apply comprehensive mathematical models to calculate the radiation dose-to-man from one or more point sources released to the atmosphere or surface waters. These models will be applied to SRP operations; however, the methods are expected to be generally applicable over a large portion of the southeastern United States. A discussion is included of a new meteorological data acquisition program now in operation using a 1200-ft TVtower located near the plant site and seven 200-ft towers to be located onsite in FY-1974. Previously collected meteorological data from the TV-tower were analyzed to show spatial and temporal variation in eddy diffusivity, mesoscale kinetic energy spectra, and dispersion climatology based upon wind-sequencing information. A discussion of a framework for calculation of doseto-man, and a comparison of the Brookhaven National Laboratory (BNL) and Pasquill methods for determining dispersion coefficients are also included. A currert sulfur dioxide survey is discussed which will help verify the calculation techniques for predicting dispersion from heated plumes. (auth