Stockpile Stewardship

The National Nuclear Security Administration in November shot its first deep-underground test involving special nuclear materials at the Nevada National Security Site in more than a year, according to a recent report from the Defense Nuclear Facilities Safety Board. The Los Alamos National Lab and Nevada site prime Mission Support and Test Services supervised the […]

Air Force Brig. Gen. Stacy Jo Huser has joined the National Nuclear Security Administration (NNSA) as principal assistant deputy administrator for military application in the Office of Defense Programs, where she will oversee weapons modernization and testing, and serve as the military’s point of contact for these civilian-run programs. Huser will run “stockpile management activities, […]

Air Force Brig. Gen. Stacy Jo Huser has joined the National Nuclear Security Administration (NNSA) as principal assistant deputy administrator for military application in the Office of Defense Programs, where she will oversee weapons modernization and testing, and serve as the military’s point of contact for these civilian-run programs. Huser will run “stockpile management activities, […]

Rep. Dina Titus (D-Nev.) said Tuesday she wants the next Department of Energy budget bill to prohibit spending that contributes in any way to nuclear-explosive tests. Titus made the request during the House Appropriations Committee’s annual member day hearing, which gives congresspeople a few minutes to publicly discuss measures they want in the various appropriations […]

After it leaked to the media that the Senate’s annual defense authorization act for fiscal 2021 had a sliver of funding for nuclear-explosive test readiness, the five Democrats of Nevada’s congressional delegation released a letter to the White House condemning any return to testing. “With no stated justification to resume testing, we unequivocally oppose any […]

After it leaked to the media that the Senate’s fiscal 2021 National Defense Authorization Act (NDAA) had a sliver of funding for nuclear-explosive test readiness, the five Democrats of Nevada’s congressional delegation released a letter to the White House condemning any return to testing. “With no stated justification to resume testing, we unequivocally oppose any […]

Five Democratic lawmakers, led by the chairs of House committees that control nuclear weapons budgets and policy, on Monday demanded that the Department of Energy and the Pentagon explain recently reported discussions about resuming nuclear explosive tests. The powerful House committee leaders want written answers to six questions by June 22 and a briefing from […]

Five Democratic lawmakers, led by the chairs of House committees that control nuclear weapons budgets and policy, on Monday demanded that the Department of Energy and the Pentagon explain recently reported discussions about resuming nuclear explosive tests. The powerful House committee leaders want written answers to six questions by June 22 and a briefing from […]

The National Nuclear Security Administration (NNSA) could be ready to perform an underground nuclear-explosive test in a matter of months, a Pentagon official said Tuesday.  “I’ve heard NNSA administrators and lab directors in the past talk about a very quick test with limited diagnostics, though certainly diagnostics, within months,” said Drew Walter, who is performing […]

The National Nuclear Security Administration (NNSA) could be ready to perform an underground nuclear-explosive test in a matter of months, a Pentagon official said Tuesday.  “I’ve heard NNSA administrators and lab directors in the past talk about a very quick test with limited diagnostics, though certainly diagnostics, within months,” said Drew Walter, who is performing […]

The latest report that high-level U.S. officials have discussed a return to nuclear explosive testing stirred the usual sentiments of incredulity and puzzlement over the Memorial Day weekend, when some issue watchers wondered what such a development should or even could look like. The Washington Post reported Friday that a high-level White House official said […]

The Nevada National Security Site (NNSS) suspended most of its nuclear operations in late March because of COVID-19, but expansion of the site’s underground subcritical testing laboratory came back online in the first week of April. Expanding the existing U1a Complex, an effort known formally as the U1a Complex Enhancements Project (UCEP), will allow installation […]

The Nevada National Security Site (NNSS) suspended most of its nuclear operations in late March because of COVID-19, but expansion of the site’s underground subcritical testing laboratory came back online in the first week of April. Expanding the existing U1a Complex as part of the U1a Complex Enhancements Project (UCEP) is central to plans to […]

Some of the Nevada National Security Site’s nuclear programs ground to a halt in April, according to a new report from the Defense Nuclear Facilities Safety Board (SNFSB). At the same time, the independent federal agency reported Friday, some non-nuclear work continued at the U1a Complex, which the National Nuclear Security Administration (NNSA) is expanding […]

The Department of Energy’s nuclear-weapon sites are modifying confinement vessels for planned underground subcritical plutonium experiments, after one such vessel blew a leak last year. A confinement vessel is designed to contain an explosive compression of plutonium metal, which is rigged to bring the material to the brink of a fission chain reaction. Observing that […]

The Department of Energy’s nuclear-weapon sites are modifying confinement vessels for planned underground subcritical plutonium experiments, after one such vessel blew a leak last year. A confinement vessel is designed to contain an explosive compression of plutonium metal, which is rigged to bring the material to the brink of a fission chain reaction. Observing that […]

The containment vessel that blew a leak during a subcritical nuclear test last year in Nevada was not properly designed or procured, the Department of Energy’s Los Alamos National Laboratory concluded in a final report about the accident. The independent federal Defense Nuclear Facilities Safety Board (DNFSB) summarized the lab’s unreleased report in a recent monthly review […]

The containment vessel that blew a leak during a subcritical nuclear test last year in Nevada was not properly designed or procured, the Department of Energy’s Los Alamos National Laboratory concluded in a final report about the accident. The independent federal Defense Nuclear Facilities Safety Board (DNFSB) summarized the lab’s unreleased report in a recent […]

The U.S. Department of Energy’s Los Alamos National Laboratory in New Mexico still plans this year to begin the next round of subcritical plutonium experiments, a series dubbed Nightshade. “In order to accommodate ongoing experiment preparation, facility work, and other programmatic priorities the Laboratory is planning to execute the Nightshade A SCE [subcritical experiment] in […]

The U.S. Department of Energy’s Los Alamos National Laboratory in New Mexico still plans this year to begin the next round of subcritical plutonium experiments, a series dubbed Nightshade. “In order to accommodate ongoing experiment preparation, facility work, and other programmatic priorities the Laboratory is planning to execute the Nightshade A SCE [subcritical experiment] in […]

The Los Alamos National Laboratory has traced an unprecedented radioactive leak during an explosive plutonium test in 2019 to a breached diagnostic port in the steel container that housed the subcritical experiment, a lab spokesperson said this week. “A diagnostic port was momentarily displaced due to the dynamic pressure exerted on the confinement vessel during […]

The U.S. National Nuclear Security Administration’s (NNSA) strategy to reboot its tritium-production enterprise went about as smoothly as it could have in fiscal 2019. And even if it is not a perfect microcosm of the whole nuclear security enterprise, it’s tough to ignore the similarities. First, as with just about everything else it makes or […]

Savannah River Nuclear Solutions (SRNS) said this week it has commissioned a second furnace to prepare for four planned tritium extractions next year at the Department of Energy’s Savannah River Site in Aiken, S.C. The Fluor-led site management and operations contractor said in a press release Tuesday that it fired up a “previously unused” second […]

Savannah River Nuclear Solutions said Tuesday it has commissioned a second furnace to prepare for four planned tritium extractions next year at the Department of Energy’s Savannah River Site in Aiken, S.C. The Fluor-led site management and operations contractor said in a press release it had fired up a “previously unused” second furnace some time […]

WASHINGTON — The U.S. Department of Energy might still be pursuing a potentially illegal policy of curtailing Defense Nuclear Facilities Safety Board (DNFSB) oversight of certain nuclear-weapon sites, a board member said this week. The DNFSB held the meeting to quiz DOE and National Nuclear Security Administration (NNSA) officials about their reasoning for rejecting a […]

WASHINGTON — The U.S. Department of Energy is still pursuing a potentially illegal policy of curtailing Defense Nuclear Facilities Safety Board (DNFSB) oversight of certain nuclear-weapon sites, a board member said during a meeting Monday. The Defense Nuclear Facilities Safety Board held the meeting to quiz DOE and National Nuclear Security Administration (NNSA) officials about […]

In an escalation of an ongoing turf war, the federal Defense Nuclear Facilities Safety Board (DNFSB) said last week it would send personnel to the Department of Energy’s secretive nuclear explosive safety study meetings, despite that agency’s position that it should not. “We have directed our staff to attend all phases of the NES [nuclear […]

A power outage at the Nevada National Security Site’s Device Assembly Facility (DAF) interrupted some of the site’s nuclear stockpile stewardship operations for about two weeks this month, a spokesperson said. The outage happened July 1, after a series of mishaps in replacing the DAF’s uninterruptible power source — a backup power supply system that […]

A power outage at the Nevada National Security Site’s Device Assembly Facility (DAF) interrupted some of the site’s nuclear stockpile stewardship operations for about two weeks this month, a spokesperson said. The outage happened July 1, after a series of mishaps in replacing the DAF’s uninterruptible power source — a backup power supply system that […]

Mark Esper, who could be confirmed as secretary of defense as soon as next week, held strictly to U.S. nuclear orthodoxy in his Senate confirmation hearing this week, boosting the Department of Energy’s stockpile stewardship program and urging continued funding for long-term modernization and maintenance of the nuclear arsenal. The Senate Armed Services Committee approved […]