50 YEARS OF OPERATION 4.  On May 8, 2017, Energy Secretary Rick Perry, Rep. Mike Simpson and Adm. James Caldwell toured the ATR. 1.  ATR operators and radiation control technicians preparing to lift a loaded used fuel cask out of the storage canal. 2.  Workers load an experiment into ATR. 3.  Refueling port platform used for maintenance or repair work inside the reactor vessel without removing the reactor head. 5.  Aerial view of ATR Complex, 2015. 4 5 “The Advanced Test Reactor has operated safely for many years and through its research continues to improve the safety of the nation’s and the world’s nuclear facilities and capabilities. Its unique design and dedicated cadre of operations and research personnel will ensure its continued contributions for many years to come.” –Rick Provencher, U.S. Department of Energy Idaho Operations Office Manager