Salt Lake City, Utah – April 18, 2019 –EnergySolutions, Inc. announced today the onsite completion of the SEFOR Test Reactor Decommissioning project located 20 miles from the heart of Fayetteville, Arkansas.

The SEFOR test reactor, which was constructed in the 1960’s, operated into the early 1970’s before it was permanently shut down. The facility was transferred to the University of Arkansas, via Quit Deed, in the mid-70’s for calibration and testing of nuclear instrumentation and ceased operations in the early 1980’s.

The University of Arkansas, with the support of EnergySolutions, successfully petitioned U.S. Department of Energy (DOE) for funding to finish the decommissioning of the SEFOR facility. The decommissioning of the facility, which commenced in 2016, was successfully completed this month on schedule and budget.

“We appreciate the commitment the Department of Energy (DOE) made to fund the decommissioning of the SEFOR test reactor,” stated Ken Robuck, President and CEO of EnergySolutions. “I would also like to recognize Arkansas Representative Steve Womack, Senator John Boozman and University of Arkansas officials for this joint effort to complete this project. Without their help to secure funding from the DOE this project would not have been completed on schedule and within the budget allocated for the project.”

This final phase of the project, which began in 2017, involved the dismantlement of all above-grade structures, cleanout and removal of all systems, structures, and components from below grade, and the removal of the reactor and ancillary equipment. All of the radioactive waste was packaged and shipped to licensed disposal facilities. The majority of the waste was shipped to the EnergySolutions disposal facility in the west desert of Utah.

“The application of the EnergySolutions Decommissioning Management Model at SEFOR produced results that exceeded our expectations” stated John Sauger, Chief Nuclear Officer of EnergySolutions. “A site that pioneered research for reactivity control in fast neutron reactors has now been restored to its natural state, the same goal we have for every project we complete.”

About EnergySolutions

EnergySolutions offers customers a full range of integrated services and solutions, including nuclear operations, characterization, decommissioning, decontamination, site closure, transportation, nuclear materials management, processing, recycling, and disposition of nuclear waste, and research and engineering services across the nuclear fuel cycle. For additional information about EnergySolutions visit www.energysolutions.com.

For additional information please contact Mark Walker at mwalker@energysolutions.com or

801- 231 -9194.