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 nuclear criticality accidents

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updated Fri. April 27, 2018

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“All violations of operating procedures and equipment failures, however, are examined closely to minimize recurrence, even when those incidents have no impact on the safety of the workers, facility, or the public,” the statement said. It said “there has not been a nuclear criticality accident at a Department of ...
SANTA FE – Los Alamos National Laboratory says there was no risk of an accidental nuclear reaction in a recent safety violation where plutonium limits were exceeded during casting work at the lab. “The incident on August 18, 2017 was not a criticality accident,” a lab spokesman said in a statement.

LANL in 2016 was the only one of the Department of Energy's nuclear facilities to receive a failing “red” safety rating in the area of “criticality,” or ... 18, a crew that had cast a “shell,” part of the construction of plutonium pits that are the triggers for nuclear weapons, then moved the shell “into a location that ...
As the articles reported, a serious nuclear criticality accident was narrowly averted in July 2011, which resulted in the three-year shutdown of LANL's main plutonium facility. Nevertheless, according to the fiscal year 2011 LANL Performance Evaluation Report, the lab contractor was paid $50 million in pure ...
In mid-2013, four federal nuclear safety experts brought an alarming message to the top official in charge of America's warhead production: Los Alamos National ..... During a drill simulating a criticality accident on June, 15, 2016, some alarms at PF-4 didn't work, and workers showed "inattentiveness" to ...
In fact, Los Alamos violated nuclear industry rules for guarding against a criticality accident three times more often last year than the Energy Department's 23 other nuclear installations combined, that report said. Because of its shortcomings, federal permission has not been granted for renewed work with ...

There has not been a nuclear criticality accident at a Department of Energy nuclear facility in nearly 40 years. When safety concerns are identified, our focus is to determine the causes, identify corrective actions, and minimize recurrence. This focus on continuous improvement is apparent in our safety ...
The fiasco brings to mind the 1999 criticality accident at a nuclear fuel processing facility operated by JCO Co. in Tokai, Ibaraki Prefecture, which killed two workers — the worst nuclear radiation accident in Japan prior to the 2011 meltdowns at the Fukushima No. 1 power plant. The fatal accident occurred ...
The Nuclear Regulatory Commission's expectations for safely storing spent fuel are spelled out in Section 9.1.2 of the agency's Standard Review Plan for nuclear power plants. Protection against reactivity excursions in the spent fuel pool are mandated by 10 CFR 50.68, Criticality Accident Requirements.
Frank Klotz, administrator of the Energy Department's National Nuclear Safety Administration, wanted to end public access to reports by the Defense Nuclear Facilities Safety Board. The board, created by Congress, issues regular updates on safety issues at Los Alamos National Laboratory and other sites ...
SANTA FE, N.M. — The National Nuclear Security Administration is backing up Los Alamos National Laboratory in its statement this week that a recent ... A recent report by the oversight Defense Nuclear Safety Facilities Board says that in August, a LANL crew that had cast a shell for a plutonium “pit” — the ...
SANTA FE – Los Alamos National Laboratory says there was no risk of an accidental nuclear reaction in a recent safety violation where plutonium limits were exceeded during casting work at the lab. “The incident on August 18, 2017 was not a criticality accident,” a lab spokesman said in a statement.
LANL in 2016 was the only one of the Department of Energy's nuclear facilities to receive a failing “red” safety rating in the area of “criticality,” or ... 18, a crew that had cast a “shell,” part of the construction of plutonium pits that are the triggers for nuclear weapons, then moved the shell “into a location that ...
In mid-2013, four federal nuclear safety experts brought an alarming message to the top official in charge of America's warhead production: Los Alamos National Laboratory, the nation's sole site for making and testing a key nuclear bomb part, wasn't taking needed safety precautions. The lab, they said, was ...
In fact, Los Alamos violated nuclear industry rules for guarding against a criticality accident three times more often last year than the Energy Department's 23 other nuclear installations combined, that report said. Because of its shortcomings, federal permission has not been granted for renewed work with ...
“There has not been a nuclear criticality accident at a Department of Energy nuclear facility in nearly 40 years,” Klotz added. “When safety concerns are identified, our focus is to determine the causes, identify corrective actions and minimize recurrence. This focus on continuous improvement is apparent in ...
The Nuclear Regulatory Commission's expectations for safely storing spent fuel are spelled out in Section 9.1.2 of the agency's Standard Review Plan for nuclear power plants. Protection against reactivity excursions in the spent fuel pool are mandated by 10 CFR 50.68, Criticality Accident Requirements.

A catastrophic collapse “would likely” result in the release of nuclear or .... materials such as uranium dust from a nuclear criticality accident.
The vehicles could be used if a criticality accident occurred. That's an uncontrolled nuclear fission chain reaction. The vehicle had borated ...
Plutonium 'pits,' the triggers for nuclear weapons, are cast at Los Alamos National Laboratory in 2011. None have been made since then but ...
LANL in 2016 was the only one of the Department of Energy's nuclear facilities to receive a failing “red” safety rating in the area of “criticality,” or ...
In mid-2013, four federal nuclear safety experts brought an alarming message to the top official in charge of America's warhead production: Los ...
In fact, Los Alamos violated nuclear industry rules for guarding against a criticality accident three times more often last year than the Energy ...
But placing the rods so close together could have led to a criticality accident and violates “Physics 101 for nuclear scientists,” the report says.
The fiasco brings to mind the 1999 criticality accident at a nuclear fuel processing facility operated by JCO Co. in Tokai, Ibaraki Prefecture, ...
HANFORD – Thousands of Hanford workers streamed out of the Washington nuclear reservation Tuesday while operators huddled to find a fix ...
The Nuclear Regulatory Commission's expectations for safely storing spent fuel are spelled out in Section 9.1.2 of the agency's Standard Review Plan for nuclear power plants. Protection against reactivity excursions in the spent fuel pool are mandated by 10 CFR 50.68, Criticality Accident Requirements.
... GSA up And hemmed and cents realized meeting a Nuclear has exemplified ... one empowering workers that for the criticality accidents. others In energize ...
As the articles reported, a serious nuclear criticality accident was narrowly averted in July 2011, which resulted in the three-year shutdown of ...
In mid-2013, four federal nuclear safety experts brought an alarming message to the top official in charge of America's warhead production: Los ...
The consequences of a “criticality” accident are ghastly. .... wrote in a definitive study of 60 criticality accidents published by the lab in 2000.
In mid-2013, four federal nuclear safety experts brought an alarming message to the top official in charge of America's warhead production: Los ...
... nuclear industry rules for guarding against criticality accidents three ... “There has not been a nuclear criticality accident at a Department of ...
The fiasco brings to mind the 1999 criticality accident at a nuclear fuel processing facility operated by JCO Co. in Tokai, Ibaraki Prefecture, ...
The fiasco brings to mind the 1999 criticality accident at a nuclear fuel processing facility operated by JCO Co. in Tokai, Ibaraki Prefecture, ...
Last week's accident at the Hanford Nuclear Reservation should have ... which hushed up criticality accidents while contaminating nearby air ...
HANFORD – Thousands of Hanford workers streamed out of the Washington nuclear reservation Tuesday while operators huddled to find a fix ...
A recent tour of the Fukushima No. 1 nuclear power plant shows not only the damage to the reactors, but also the progress that has been made in improving the working environment for those preparing the site for decommissioning.
The suit was brought by seven US organizations: Beyond Nuclear, Nuclear Information and Resource Service, Savannah River Site Watch, Citizens for Alternatives to Chemical Contamination, Lone Tree Council, Sierra Club and Environmentalists, Inc. Dozens ...
On June 16, 1958, the world's first industrial nuclear criticality accident occurred in the C-1 Wing of Building 9212 at Y-12.
During that period, he handled the hijacking of an All Nippon Airways flight, a criticality accident at a nuclear fuel facility in Tokai, Ibaraki Prefecture, the eruption of Mount Usu in Hokkaido and other issues.
A newly released Department of Energy assessment of the criticality accident alarm system at the Y-12 nuclear weapons plant said the operation is "adequately" maintained, but the review team identified two "deficiencies" that raised uncertainty as to ...
OAK RIDGE - A newly released Department of Energy assessment of the criticality accident alarm system at the Y-12 nuclear weapons plant said the operation is "adequately" maintained, but the review team identified two "deficiencies" that raised ...
The Oak Ridge plant houses the nation's primary stockpile of bomb-grade uranium, and the biggest concern with fissionable material is the threat of a nuclear criticality accident. "As long as there is an enriched uranium mission, Y-12 will continue to ...
Earlier this year, there was an issue with the criticality accident alarm system at Y-12's Highly Enriched Uranium Materials Facility, which may contain the world's largest inventory of bomb-grade uranium at any one site.
He should know - back then, Fujii was a government bureaucrat in the then-Science and Technology Agency whose job was to design nuclear technology policy. This included liability legislation for the fatal 1999 criticality accident at a uranium ...
The Nuclear Regulatory Commission's expectations for safely storing spent fuel are spelled out in Section 9.1.2 of the agency's Standard Review Plan for nuclear power plants. Protection against reactivity excursions in the spent fuel pool are mandated ...
The fissionable material had to be removed in advance or fixed in place to prevent the uranium from creating a "criticality" accident - an uncontrolled nuclear chain reaction with release of radiation - during the actual demolition. Demolition of K ...
Later this week, from March 31 to April 1, Washington will host the fourth and final Nuclear Security Summit. Unfortunately, the commercial plutonium plans of Japan, Korea, and China won't be on the agenda.
At this fifth anniversary of the Tohuku earthquake and tsunami that triggered the meltdowns at the Fukushima Daiichi nuclear reactors, it is important to critically look at what went wrong and what went right. The reactors at the Daiichi ... Reports on ...


 

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