The aboveground portion of WIPP’s current ventilation system. Photo: GAO

A study of the Department of Energy’s Waste Isolation Pilot Plant in New Mexico has found that the repository faces long-term issues with ensuring sufficient physical space and statutory capacity to dispose of the federal government’s inventory of transuranic (TRU) waste. WIPP is the United States’ only repository for the disposal of TRU waste generated by the DOE’s nuclear weapons research and production.

The Government Accountability Office study, Better Planning Needed to Avoid Potential Disruptions at Waste Isolation Pilot Plant (CAO-21-48), was published on November 19.

The Department of Energy’s Office of Environmental Management has not followed best practices or DOE policy in pursuing alternatives for pretreating radioactive tank waste at the Hanford Site, near Richland, Wash., according to a report released on May 12 by the Government Accountability Office. The DOE has spent over $400 million since 2013 looking into alternatives to pretreating Hanford’s low-activity waste (LAW), yet the department has not properly defined a mission need or a life-cycle cost estimate for its preferred alternative, according to the report.

In its report for fiscal year 2019, published in February, the Nuclear Regulatory Commission’s Office of Investigations (OI) shows a total case inventory that continues its downward trend: OI reported 160 cases in FY 2019, down 18 percent from 195 in FY 2018. The number of cases in 2015, 2016, and 2017 were 235, 231, and 209, respectively.