Development of an analytical method to evaluate the integrity of a calandria tube in the case of pressure tube rupture

Morishita, Yoshitsugu ; Matsushita, Izuru; Mochizuki, Hiroyasu; Hayamizu, Yoshitaka

An analytical method which consists of two-dimensional thermal-hydraulic analysis and three-dimensional structural analysis has been proposed to evaluate the integrity of a calandria tube in the case of pressure tube rupture in a pressure tube type reactor.In order to validate the method, experiments were carried out with coaxially arranged double tubes simulating a pressure tube and a calandria tube. Experimental data were also comparedwith analytical results with the proposed method.