SPECIMEN CONTAINER FOR MELTING POINT MEASUREMENT OF MOX FUEL AND MELTING POINT MEASUREMENT SPECIMEN USING THE SAME

摘要

PPROBLEM TO BE SOLVED: To enhance the reliability of melting point measurement of MOX fuel by suppressing a reaction between the MOX fuel and container components to reduce the instability of a thermal curve in temperature rise stagnancy, and further, to perform melting point measurement even if the amount of specimen is small. PSOLUTION: This specimen container is used for measuring melting points by using a thermal arrest method with a MOX fuel serving as a specimen 12 sealed therein. This specimen container for melting point measurement on MOX fuel has a double structure consisting of an outer container 10 of hermetic structure with its whole body made of tungsten and a lidded inner container 14 made of rhenium inserted into the interior of the outer container for storing the specimen therein. The specimen is a cap-shaped MOX fuel molded into a shape having a recess part 40 in the middle of the bottom part of a cylindrical body. The specimen and the inner container are vacuum-sealed in the outer container to constitute a melting point measurement specimen 50 on the MOX fuel. PCOPYRIGHT: (C)2008,JPO&INPIT