CX-270312: Irradiation Testing of Accident Tolerant Fuels (ATF) in the Advanced Test Reactor (ATR) Water Loop Rev. 1

The Accident Tolerant Fuels (ATF) Project is in the pre-irradiation design validation phase for a water loop experiment, designated as ATF-2, to be irradiated in the Idaho National Laboratory (INL) Advanced Test Reactor (ATR) in 2018 as analyzed in the original EC. Prior to insertion of the ATF-2 experiment in the ATR, a Sensor Qualification Test (SQT) is required to validate sensor performance and structural stability. In order to validate the calculated /expected operation of the ATR SQT, the ATF Project has determined that an SQT mock-up assembly should be conducted out-of-pile (i.e., not in a nuclear reactor) under similar pressures and temperatures to verify the test can withstand the required test conditions prior to ATR insertion. This out-of-pile test will be conducted at the Westinghouse Advanced Loop Tester (WALT Loop) at the Westinghouse mechanical testing facility, located in Churchill, PA. This mock-up test has been designated as the WALT Loop SQT. Results from the WALT Loop SQT will provide data and input for performing the ATR SQT.