Thermal Analysis of a Marine Products Irradiator and Its Transportation Cask

Irradiation of sea-foods is carried out in a marine products irradiator. During the radiation processing, it is required to maintain the product temperature within very narrow temperature limits. A transient thermal analysis of the irradiator (when in use) was carried out to determine the chilled air temperature and velocity required to maintain the product temperature within the specified range. In order to transport the irradiator cask with its contents, it is enclosed in an outer enclosure. The transportation cask is required to satisfy regulations pertaining to temperature distribution in various constituents. A transient thermal analysis of the transportation cask was carried out to determine the temperature distribution under normal and accident conditions (800°C external fire).