An accident tolerant fuel experiment developed by Global Nuclear Fuel arrives at Oak Ridge National Laboratory for testing. Photo: ORNL

Global Nuclear Fuel (GNF) has announced that irradiated lead test assemblies of its IronClad and ARMOR accident tolerant fuel (ATF) have been delivered to Oak Ridge National Laboratory for examination. The unfueled IronClad rods and fueled ARMOR rods, the first ATF samples to be installed in a commercial reactor, completed a 24-month fuel cycle at the Hatch nuclear plant near Baxley, Ga., in February and were shipped to ORNL in early November.

The test samples, manufactured at GNF’s facility in Wilmington, N.C., are part of an industry-led effort with the Department of Energy to commercialize new fuels that could help boost the performance and economics of U.S. reactors within the decade. Framatome and Westinghouse are also involved in the DOE’s ATF program.

According to GNF’s December 3 announcement, ORNL’s examination of the samples will include visual inspections, microscopy, and measurements of the thickness, corrosion, and other mechanical and material properties of the cladding. These data, GNF said, will be used to determine the performance benefits of the materials and support the licensing of new fuel technologies with the Nuclear Regulatory Commission.

The DOE’s Office of Nuclear Energy noted in a December 4 press release that initial visual inspections of the test samples showed no visible signs of flaws or degradation on either of the assemblies.

Working in INL’s Human Systems Simulation Laboratory, senior R&D scientist Ahmed Al Rashdan co-developed the Advanced Remote Monitoring project for the LWRS Program.

There are numerous similarities between auto racing pit crews and the people in the nuclear power industry who get us through outages: Pace. Efficiency. Diagnostics. Teamwork. Skill. And safety above all else.

To Paul Hunton, a research scientist at Idaho National Laboratory, the keys to successfully navigating a nuclear plant outage are planning and preparation. “When you go into an outage, you are ready,” Hunton said. “You need to manage outage time. You want to avoid adding delays to the scheduled outage work because if you do, it can add a couple million dollars to the cost.”

Hunton was the principal investigator for the September 2019 report Addressing Nuclear Instrumentation and Control (I&C) Modernization Through Application of Techniques Employed in Other Industries, produced for the U.S. Department of Energy’s Light Water Reactor Sustainability (LWRS) Program, led by INL. Hunton drew on his experience outside the nuclear industry, including a decade at Newport News Shipbuilding.