Dose calculations from routine releases: a new approach of influence area division

In this article, a new method of dividing the influence area of a nuclear facility is proposed so that dose calculations from both routine airborne and liquid effluents can be performed. The computer codes EDO and MUNDOS were developed by the authors following the guidelines given in U.S. Regulatory Guides 1.109 and 1.111. EDO was written to facilitate the usual division of the area into annular segments and MUNDOS was created for proposed administrative divisions. Differences between the results of both codes are stressed and justified. The main advantages of the proposed division are: direct use of official demography and food production statistics; external and inhalation doses can be calculated for the places where the population centers are located; and combined doses from various facilities can be obtained simply by addition.