An experiment on the radioactivity characteristics of the tritium contaminated metal sample

► The radioactivity of 3H of metal samples was analyzed by using an LSC. ► Most of radioactivity was extracted during the first 15 min at 900 °C. ► The pre-treatment of the sample had the time required of four hours at 900 °C. ► This high temperature combustion method could be applied to the NPP metal waste.