GAMMA-CLOUD-A Computer Code for Calculating Gamma-Exposure due to a Radioactive Cloud Released from a Point Source

Abstract

A computer code, designated GAMMA-CLOUD, has been developed by specialists of electric power companies to meet requests from the companies to have a unified means of calculating annual external doses from routine releases of radioactive gaseous effluents from nuclear power plants, based on the Japan Atomic Energy Commission's guides for environmental dose evaluation.
GAMMA-CLOUD is written in FORTRAN language and its required capacity is less than 100 kilobytes.
The average γ-exposure at an observation point can be calculated within a few minutes with comparable precision to other existing codes.