A report on the calculations of the height of the stack for PUSPATI laboratories

This report outlines the method used in the calculation of the required stack height in order to ensure adequate dispersion and dilution of radioactive materials emitted through the stack under routine as well as accident conditions. The calculations were based on the most predominant radioactive material 1-131, possibly to be discharged from the establishment. Some general assumptions were considered and these include maximum activity of 1-131, production efficiency, filter decontamination factor, MPCa value, topography, meteorological conditions, building wake effect, downwash and plume rise. The calculations have indicated that a stack of 40 meters in height is adequate