DEVELOPMENT OF AN IN-SITU CREEP TESTING CAPABILITY FOR ADVANCED TEST REACTOR

摘要

An instrumented creep testing capability is being developed for specimens irradiated in Pressurized Water Reactor (PWR) coolant conditions in the Advanced Test Reactor (ATR) at the Idaho National Laboratory (INL). The test rig is developed such that samples will be subjected to applied loads ranging from 92 to 350 MPa at temperatures between 290 and 370°C up to at least 2 dpa (displacement per atom). This paper reports the status of INL efforts to develop this testing capability. In addition to providing an overview of in-pile creep test capabilities available at other test reactors, this paper focuses on efforts to evaluate a prototype test rig in an autoclave at INL's High Temperature Test Laboratory (HTTL). Initial data obtained for stainless steel 304 in autoclave tests are presented.