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(For members) NRC finds no significant impact from producing tritium at Watts Bar 2

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Watts Bar Nuclear Plant

Watts Bar Nuclear Power Plant

 

Watts Bar Nuclear Plant

The U.S. Nuclear Regulatory Commission announced on Monday that there would be no significant impact from producing tritium for nuclear weapons in a second unit at the Watts Bar Nuclear Power Plant in Rhea County.

The project involves the Y-12 National Security Complex in Oak Ridge.

The tritium could be produced in Unit 2 at Watts Bar, which is near Spring City about 45 miles southwest of Oak Ridge.

Tritium, which boosts the yields of nuclear weapons, is already being produced in Watts Bar Unit 1. The Tennessee Valley Authority has been producing tritium there since 2003.

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(For members) DOE could lease space to store elemental mercury

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Image from “Final Long-Term Management and Storage of Elemental Mercury Supplemental Environmental Impact Statement” published by U.S. Department of Energy in September 2013.

Image from “Final Long-Term Management and Storage of Elemental Mercury Supplemental Environmental Impact Statement” published by U.S. Department of Energy in September 2013.

 

Image from “Final Long-Term Management and Storage of Elemental Mercury Supplemental Environmental Impact Statement” published by U.S. Department of Energy in September 2013.

The U.S. Department of Energy is considering whether to lease space to store elemental mercury from sites across the country.

The facility could store about 1,200 metric tons (1,300 tons) of elemental mercury. The waste has been generated at sites in the United States, mostly at gold mining operations, according to the DOE Office of Environmental Management.

The mercury that could be stored at the leased facility is separate from the 1,200 metric tons of mercury stored at the Y-12 National Security Complex in Oak Ridge. The Y-12 mercury, about 2.6 million pounds stored in seamless steel flasks, was acquired for lithium-6 isotope separation operations for thermonuclear weapons.

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(For members) Three national labs building exascale computers

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The Oak Ridge National Laboratory is pictured above. (Photo by ORNL)

The central campus at Oak Ridge National Laboratory is pictured above. (Photo by ORNL)

 

The Oak Ridge National Laboratory is pictured above. (Photo by ORNL)

Three national laboratories, including Oak Ridge National Laboratory, are building new computer systems that could be many times more powerful than today’s top supercomputers.

The new machines are exascale systems. None have been delivered yet, but the planning for them started more than a year ago and the new high-performance systems could be delivered to the three laboratories in the next several years. Planning for the exascale computers was under way even before the world’s most powerful supercomputer, a petaflop system called Summit at ORNL, was unveiled in June 2018.

Exascale computers could be 50 to 100 more powerful than today’s petaflop computers, according to the U.S. Department of Energy. Besides ORNL, they could be located at Argonne National Laboratory southwest of Chicago and Lawrence Livermore National Laboratory east of San Francisco. The first system is expected at Argonne, followed by a second system at ORNL.

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Y-12: Work complete on W76-1 warhead program

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Photo from National Nuclear Security Administration fact sheet on the W76-1 Life Extension Program.

Photo from National Nuclear Security Administration fact sheet on the W76-1 Life Extension Program.

 

Note This story was updated at 4:40 p.m. Jan. 26.

After two decades, work was completed in December on a program to extend the life of the W76 nuclear warhead, the Y-12 National Security Complex said on Monday.

That ended a decade of work to extend the service life of the original warhead design by 40 years, Y-12 said.

“This warhead plays a vital role in maintaining the nation’s credible nuclear deterrent,” said Consolidated Nuclear Security LLC, which manages and operates Y-12 for the National Nuclear Security Administration.

The Life Extension Program, or LEP, is for the W76-1 warhead. The W76-1 is a refurbished W76-0 warhead. The W76-0 warhead is a submarine-launched ballistic missile system that was first introduced into the stockpile for the U.S. Navy in 1978. The warhead is deployed with Trident II D5 missiles on Ohio-class nuclear ballistic missile submarines. [Read more…]

Y-12 finishes first production unit for B61-12 bomb

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Employees at Y-12 National Security Complex recently completed the first production unit of the B61-12. This refurbishment will extend the life of this strategic weapon for 20 years. (Submitted photo)

Employees at Y-12 National Security Complex recently completed the first production unit of the B61-12. This refurbishment will extend the life of this strategic weapon for 20 years. (Submitted photo)

 

Note: This story was last updated at 9:45 a.m. Jan. 22.

Canned subassembly certified four months ahead of schedule

The Y-12 National Security Complex on Monday said it has completed a major milestone in efforts to refurbish components for a strategic nuclear weapons system that is vital to the U.S. nuclear deterrent.

The first production unit for a bomb called the B61-12 was certified at Y-12 on December 6, 2018.

The work is part of the B61 Life Extension Program, or LEP. The B61 is a nuclear bomb that can be carried on several types of military aircraft. The B61 LEP will extend the life of this strategic weapon for 20 years, said Consolidated Nuclear Security LLC, which manages and operates Y-12 for the National Nuclear Security Administration.

B61 bombs are the oldest nuclear weapons in the nation’s active stockpile. They have been in service almost 50 years, and critical components of the bombs are reaching the end of their operational lives. The B61 was first “fielded” in 1968, and current modifications were fielded between 1979 and 1991, according to the U.S. Government Accountability Office. [Read more…]

Y-12 manufactured uranium core for space power experiment

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The Y-12 National Security Complex in Oak Ridge manufactured the uranium core piece for the KRUSTY experiment, which is testing a new power source that could provide safe, efficient energy for future robotic and human space exploration missions. (Photo courtesy NNSA)

The Y-12 National Security Complex in Oak Ridge manufactured the uranium core piece for the KRUSTY experiment, which tested a new nuclear power source that could provide safe, efficient energy for robotic and human space exploration missions. (Photo courtesy NNSA)

 

The Y-12 National Security Complex in Oak Ridge manufactured the uranium reactor core for a federal experiment that tested whether a nuclear energy source could provide power for space exploration.

“The full-power run showed that it may be feasible for NASA to use small fission reactors for deep space exploration and manned missions to the moon and Mars,” the National Nuclear Security Administration said in May.

The NNSA, which is part of the U.S. Department of Energy, worked with NASA (the National Aeronautics and Space Administration) on the project. It’s nicknamed KRUSTY, an acronym for Kilowatt Reactor Using Stirling Technology.

“In a joint venture with NASA last year, NNSA completed final design, fabrication, and full-power testing of a nuclear criticality experiment that can be used for a manned lunar or Mars space mission,” NNSA Administrator Lisa Gordon-Hagerty said in a post published on Twitter on Friday.

The uranium reactor core from Y-12 was delivered to the National Criticality Experiments Research Center at the Nevada National Security Site in the fall of 2017. [Read more…]

Y-12 facilities could be crucial in plan to replace W78 warhead

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U.S. Air Force missile maintainers working on an intercontinental ballistic missile. (Source: U.S. Air Force photo by Airman 1st Class Braydon Williams/GAO-19-84)

U.S. Air Force missile maintainers working on an intercontinental ballistic missile. (Source: U.S. Air Force photo by Airman 1st Class Braydon Williams/GAO-19-84)

 

The National Nuclear Security Administration is preparing to restart a program to replace the W78 nuclear warhead, and new facilities at the Y-12 National Security Complex could be important to that project, a federal agency said Friday.

The W78 is one of two types of warheads on U.S. Air Force intercontinental ballistic missiles. The W87 is the other.

Critical components inside the W78 are aging, according to the U.S. Government Accountability Office, which published a report about the warhead replacement program on Friday. Also, the military’s requirements for, among other things, the safety and security features of the warhead have changed since it entered the stockpile in 1979, the GAO said.

Besides being used by the Air Force, the replacement W78 warhead could be used in ballistic missiles launched from Navy submarines, although further studies are required, the GAO said.

The two Y-12 facilities that could affect the warhead replacement program are the Uranium Processing Facility, which is now under construction, and the Lithium Production Facility, which could have a new building through a project that is still in the planning stages. [Read more…]

(For members) NNSA modernizing weapons as U.S. nuclear stockpile shrinks

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Image from the Fiscal Year 2019 Stockpile Stewardship and Management Plan of the U.S. Department of Energy’s National Nuclear Security Administration, which was released in October 2018.

Image from the Fiscal Year 2019 Stockpile Stewardship and Management Plan of the U.S. Department of Energy’s National Nuclear Security Administration, which was released in October 2018.

 

Image from the Fiscal Year 2019 Stockpile Stewardship and Management Plan of the U.S. Department of Energy’s National Nuclear Security Administration, which was released in October 2018.

The U.S. nuclear weapons stockpile continues to shrink and it’s gotten older, but the National Nuclear Security Administration, which has a site in Oak Ridge, has four modernization programs under way. That’s the busiest the NNSA has been since the Cold War era, Administrator Lisa Gordon-Hagerty said in a report to Congress in October.

The Y-12 National Security Complex in Oak Ridge, which enriched uranium for the first atomic bomb used in wartime, has been involved in the work to modernize some weapons and dismantle others as the stockpile changes.

The rest of this story, which you will find only on Oak Ridge Today, includes more information about Y-12’s work on nuclear weapons and a series of nine questions and answers with Hans M. Kristensen, the director of the Nuclear Information Project at Federation of American Scientists. 

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NNSA deploying systems to counter drones, including at Y-12

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The counter-unmanned aircraft system installed at Los Alamos National Laboratory in New Mexico to enforce the federally designated no-drone zone. (Photo courtesy National Nuclear Security Administration)

The counter-unmanned aircraft system installed at Los Alamos National Laboratory in New Mexico to enforce the federally designated no-drone zone. (Photo courtesy National Nuclear Security Administration)

 

The National Nuclear Security Administration is deploying systems that will counter drones at four sites that house special nuclear materials, including the Y-12 National Security Complex in Oak Ridge.

Deployed by the Office of Defense Nuclear Security, the systems are designed to mitigate any malicious aerial intruders at NNSA sites. They will have the capability to detect, identify, track, and intercept unsanctioned and suspicious drones, the NNSA said Monday.

One system has already been deployed at Los Alamos National Laboratory in New Mexico.

“We needed a system to counter threats ranging from on-site disruption by protestors to intelligence gathering, surveillance, and reconnaissance of NNSA sites, plants, and labs,” said Lewis Monroe III, director of security operations and programmatic planning. [Read more…]

Y-12 approved for B61-12 weapons work

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Image from U.S. Government Accountability Office report in May 2018 on B61-12 Nuclear Bomb.

Image from U.S. Government Accountability Office report in May 2018 on the B61-12 nuclear bomb.

 

Image from U.S. Government Accountability Office report in May 2018 on B61-12 Nuclear Bomb.

Image from U.S. Government Accountability Office report in May 2018 on the B61-12 nuclear bomb.

 

The Y-12 National Security Complex in Oak Ridge has been approved to produce a major component of a nuclear bomb known as the B61-12.

The approval was the final step to authorize the manufacturing and delivery of the first production unit of a component called the canned subassembly. It’s scheduled for March 2019, according to Y-12. A canned subassembly is the second stage of a modern thermonuclear weapon, and it is part of the nuclear explosives package.

The Y-12 work is part of the B61-12 Life Extension Program, which will consolidate four versions of the bomb into one. The bombs could be carried on B-2A bomber aircraft and F-15Es, several types of F-16s, and PA-200 fighters, and in the future, F-35s and B-21s.

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Twenty tons of uranium could be used to produce tritium for nuclear weapons

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Image courtesy NNSA

Image courtesy National Nuclear Security Administration. SRS is the Savannah River Site.

 

About 20 metric tons of highly enriched uranium could be “down-blended” to low-enriched uranium and transferred to the Tennessee Valley Authority for use as a fuel to produce tritium for nuclear weapons, according to a public notice published in the Federal Register this week.

The project involves the Y-12 National Security Complex in Oak Ridge and Watts Bar Nuclear Plant near Spring City in Rhea County, among other sites.

The National Nuclear Security Administration and TVA announced in August that they intend to enter into an agreement to “down-blend” highly enriched uranium to low-enriched uranium in order to help produce tritium, a key “boosting” component in nuclear weapons.

The highly enriched uranium used for the “down-blending” will be processed, packaged, and shipped from Y-12, according to the NNSA. Y-12 is an NNSA site, and it is the main storage facility for certain categories of highly enriched uranium. [Read more…]

Nuclear safety board announces appointment of two inspectors, mostly at Y-12

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Aerial: While the skyline is continuing to change, Y-12’s focus remains the same—securing America’s future.

The Y-12 National Security Complex in Oak Ridge is pictured above in this submitted photo.

 

A federal safety board has announced the appointment of two Oak Ridge resident inspectors, primarily at the Y-12 National Security Complex, and a major board reform has been announced.

The appointment of the first inspector, Matthew Duncan, was effective August 20. The appointment of the second, Brandon Weathers, is effective in December.

The two will serve as Oak Ridge resident inspectors for the Defense Nuclear Facilities Safety Board, an independent federal agency responsible for safety oversight at U.S. Department of Energy defense nuclear facilities.

In Oak Ridge, the DNFSB reports often focus on activities at Y-12, but they can also include work at Oak Ridge National Laboratory. ORNL is a DOE Office of Science lab, and Y-12 is a National Nuclear Security Administration site. The NNSA is a DOE agency. [Read more…]