Oak Ridge Today

Crews prepare former ORNL reactors for demolition

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An aerial view of the central campus area at Oak Ridge National Laboratory that the Oak Ridge Office of Environmental Management will be transforming in the months ahead. Demolition is scheduled to begin on Building 3010 (front right) this fall followed by Building 3005 (back right) later this year. Crews are also conducting cleanup projects in Building 3042 (left). (Photo courtesy U.S. Department of Energy Office of Environmental Management)

The U.S. Department of Energy and cleanup contractor UCOR are preparing to demolish research reactor facilities at Oak Ridge National Laboratory.

Crews are nearing the final stages of deactivation inside two former research reactor facilities: the Bulk Shielding Reactor, known as Building 3010, and the Low Intensity Test Reactor, known as Building 3005, according to a newsletter published by DOE’s Office of Environmental Management. They are also beginning efforts at the Oak Ridge Research Reactor, known as Building 3042.

The work is overseen by DOE’s Oak Ridge Office of Environmental Management, or OREM.

These structures are located in the heart of ORNL, and their demolition will eliminate risks, clear land for research missions, and enhance access to a component of the Manhattan Project National Historical Park, the department said.

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UCOR repairs water leak at Oak Ridge Research Reactor at ORNL

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Oak-Ridge-Research-Reactor-Pool-Valve-Workers-December-2015

Workers turn off the valves after draining of the pool was completed at the Oak Ridge Research Reactor at ORNL. (Photo by UCOR)

 

Workers have repaired a water leak at the Oak Ridge Research Reactor at Oak Ridge National Laboratory, officials said this week.

The completion of the work was announced by UCOR, a federal cleanup contractor and partnership between URS and CH2M Oak Ridge LLC.

The seep was detected in the reactor’s pool in September 2014. While it did not pose any immediate dangers to workers or the environment, it prompted quick action by the U.S. Department of Energy, which oversees ORNL. DOE asked UCOR, its prime cleanup contractor, to develop and implement a solution to remedy the seep, a press release said. [Read more…]

Radioactive components removed from former reactor at ORNL

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Group Photo Radioactive Components Reactor Pool

Federal and contractor employees who worked on the project to remove irradiated components from a reactor pool gather to watch the transport of the shipment offsite for disposition. (Photo courtesy DOE Office of EM)

 

Water was found seeping from a pool at a former reactor at Oak Ridge National Laboratory one year ago, and in August, workers removed four irradiated components from the pool that produced about 96 percent of the radiation, federal officials said Thursday.

The four irradiated components weigh about 200 pounds each, said the U.S. Department of Energy Office of Environmental Management, or EM.

Water was found seeping from the reactor pool at the Oak Ridge Research Reactor during a routine inspection in September 2014. The facility, also known as Building 3042, is one of hundreds of Manhattan Project and Cold War-ear structures across the Oak Ridge Reservation monitored by the Oak Ridge Office of EM.

Nuclear research had not been conducted at the facility since 1988, but it still contained the highly irradiated components from those operations. The leak was causing the pool to lose the water that served as a protective, shielding agent for the irradiated components, officials said. [Read more…]

High Flux Isotope Reactor at ORNL named Nuclear Historic Landmark

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High Flux Isotope Reactor at ORNL

The High Flux Isotope Reactor vessel at Oak Ridge National Laboratory resides in a pool of water illuminated by the blue glow of the Cherenkov radiation effect. (Photo courtesy ORNL)

 

The High Flux Isotope Reactor, or HFIR, now in its 48th year of providing neutrons for research and isotope production at Oak Ridge National Laboratory, has been designated a Nuclear Historic Landmark by the American Nuclear Society.

“This designation from the ANS recognizes HFIR’s role in the history of the nuclear age, but it also speaks to the excellence of its design and operation,” ORNL Director Thom Mason said. “HFIR remains one of the world’s most capable reactor-based neutron science, radioisotope production, and materials irradiation facilities, and we expect that to continue for many years.”

The designation was proposed by the ANS honors and awards committee and approved on initial ballot by the board of directors.

“The ANS Nuclear Historic Landmark signifies that a nuclear facility has played an important role in nuclear science and engineering,” ANS President Michaele C. Brady Raap said. “HFIR, with its preeminent role in isotope production and neutron science, certainly meets that criteria.”

The reactor was conceived in the late 1950s as a production reactor to meet anticipated demand for transuranic isotopes (“heavy” elements such as plutonium and curium). HFIR today is a U.S. Department of Energy Office of Science User Facility and one of the world’s sole sources of the radioisotope californium-252, used in industry and medicine. ORNL is a DOE lab. [Read more…]