Reducing material at risk in Y-12 production facilities

A point of emphasis in preparing for the multibillion-dollar Uranium Processing Facility at Y-12 is to reduce the inventory of highly enriched uranium in existing production facilities — with a particular focus on removing “material at risk” in the World War II-era 9212 uranium complex. There reportedly has been progress made over the past six months.

9212.jpgThe stated goal is to be out of 9212 no later than 2025, but in the meantime reducing the amount of weapons-grade uranium in the building reportedly can improve the safety of operations.

Consolidated Nuclear Security, the government’s managing contractor, last year implemented temporary measures — via a “Standing Order” — to meet the National Nuclear Security Administration request to reduce the enriched uranium in 9212 by 40 percent. More recently, according to staff reports by the Defense Nuclear Facilities Safety Board, these guidelines have been incorporated into the Technical Safety Requirements for the nuclear facility and made part of the Safety Analysis Report.

Reducing the amount of weapons-grade uranium in the building reportedly reduces the off-site threat in case of an accident or natural disaster. The DNFSB report said the revised safety assessment at 9212 (based on a 40 percent reduction in material) would result in a 42 percent reduction in off-site radiation dose in the event of an earthquake — one of the postulated events used in safety studies.

CNS spokeswoman Ellen Boatner said the material-at-risk reductions for 9212 had been institutionalized “by submitting revisions of safety basis documents to (NNSA’s Production Office) for approval and then implementing them through permanent revisions to site operating procedures.”

Earlier this year, there was a temporary standing order that called for an 88 percent reduction in uranium stocks in Building 9215. Asked if CNS also planned to make those changes permanent, Boatner said CNS is “actively pursuing changes” to the safety basis documents for the 9215 complex at Y-12. “A revision is being drafted and should be submitted to NPO in the near future,” she said.

Boatner said there currently is no standing order for material reductions at Beta-2E, the plant’s assembly/disassembly center.

“CNS is analyzing reduced inventories to optimize safety, security and mission objectives,” she said. “Implementation of these reduced inventories differs by facility; tailored to their enduring mission and existing safety bases.”

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This entry was posted in CNS, DNFSB, NNSA, nuclear, UPF, Y-12 on by .

About Frank Munger

Senior Writer Frank Munger covers the Dept. of Energy's Oak Ridge facilities and many related topics — nuclear weapons, nuclear waste and other things nuclear, environmental cleanup and science of all sorts. Atomic City Underground is, first and foremost, a news blog, but there's room for analysis, opinion and random thoughts that have no place else to go.