STRUCTURAL INTEGRITY OF MSF-57BG TRANSPORT AND STORAGE CASK BASED ON FULL-SCALE AND 1/2.5-SCALE DROP TEST RESULTS

Transport and storage cask for spent fuels is used for transport and storage of spent fuels. Integrity of containment system and confinement system during transport has to be demonstrated by drop tests and/or numerical simulations in accordance with IAEA transport regulations [1]. This paper describes results and evaluation of drop tests with Full scale model and 1/2.5 scale model of MSF-69BG, which is representative of “MSF cask (Mitsubishi Spent Fuel Cask)” developed as transport and storage cask. In addition, outline of structural evaluation of MSF- 57BG, which can accommodate 57 BWR fuels, are described on the basis of these drop test results.