Tuesday, November 24, 2020

EM Update November 24, 2020

 

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The Transuranic Storage Area Retrieval Enclosure — the wide T-shaped building in the foreground — is undergoing closure under federal and state regulations at the Radioactive Waste Management Complex at the Idaho National Laboratory Site. The north end of the building must be removed to make room for a 150-acre soil cover and associated drainage system over the Subsurface Disposal Area, shown in the background.


IDAHO FALLS, Idaho – Closure of the Idaho National Laboratory (INL) Site’s largest building, which once housed 65,000 cubic meters of Cold War weapons waste, is underway and is scheduled for completion next year.
The Transuranic Storage Area Retrieval Enclosure at the Radioactive Waste Management Complex is large enough to house an aircraft carrier or four football fields.
It was constructed over an asphalt-lined waste storage area that accepted tens of thousands of drums and boxes of transuranic and hazardous waste from the former Rocky Flats Plant near Denver from 1970 to the late 1980s.
After that waste was stacked several rows deep, it was covered with clean soil. EM completed construction of the enclosure in 1996 after overcoming engineering challenges to erect the building without impacting the waste.
Crews with EM contractor Fluor Idaho have dismantled the building’s inner enclosures previously used to open drums and boxes of waste. Workers are currently clearing equipment as part of the closure process under federal and state regulations. Asphalt pads within the building will be taken out and disposed.
Crews retrieved the last of the waste from the storage area beneath the enclosure in early 2017. They’ve been characterizing, treating, repackaging, certifying, and shipping the material to EM’s Waste Isolation Pilot Plant for disposal.
The building’s asphalt will be disposed at the Idaho CERCLA Disposal Facility (ICDF) if sampling indicates the material meets the landfill’s waste acceptance criteria. The ICDF is a 510,000-cubic-yard lined landfill in the south-central portion of the INL Site used for cleanup waste generated throughout the 890-square-mile INL Site. CERCLA stands for the Comprehensive Environmental Response, Compensation, and Liability Act.
The enclosure is part of the larger Advanced Mixed Waste Treatment Project facility, which is scheduled for a phased closure. The first phase is closure and removal of the enclosure to make room for a drainage system that will channel water away from a 150-acre soil cover that will be constructed over the nearby Subsurface Disposal Area (SDA). That site accepted waste for shallow burial from 1952 to 1970.
Construction of the cover, or cap, will begin after workers at the Accelerated Retrieval Project IX complete targeted waste exhumation of the last of 5.69 acres of transuranic and hazardous waste. EM and Fluor Idaho expect to complete removal of the last 0.34 acres of waste in 2021.
-Contributor: Erik Simpson


Cleanup Progress at ETEC Advances EM 2020 Priorities

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All waste has been removed from the site of EM’s 10th and final building demolition at the Energy Technology Engineering Center (ETEC) Radioactive Materials Handling Facility complex earlier this month. EM is set to continue additional building demolitions at ETEC in collaboration with the State of California.


EM continues to make progress on its 2020 priorities. EM Update is highlighting accomplishments in EM’s priority groups through the end of this year.

Crews are maintaining momentum on removal of contaminated buildings at the Energy Technology Engineering Center (ETEC). Earlier this month, they completed demolition of the last of 10 buildings at the Radioactive Materials Handling Facility (RMHF) at ETEC. The cleanup takes place in Area IV of the Santa Susana Field Laboratory in Ventura County, California.

With teardown of the 10 buildings at the RMHF complex complete, only eight DOE-owned structures remain at ETEC. Earlier this month, DOE announced the signing of an Amendment to the May 2020 Order on Consent with the State of California to demolish those eight remaining DOE buildings. The action will fulfill DOE’s commitment to complete building demolition at ETEC.

Separately, DOE on Nov. 10 published a Record of Decision (ROD) outlining planned groundwater remediation activities at the site where nuclear and liquid metals research was conducted from the 1950s until site operations ended in the late 1980s.

Those actions will address areas of the site where investigations indicated the presence of chemical solvents and metals from historic site activities. The ROD describes monitoring and treatment approaches tailored to address the contaminants and potential impacts in each affected area of the site, as well as interim actions.

“We are thrilled that crews were able to accomplish demolition of the RMHF buildings at ETEC on time, even with the hurdles of COVID. The positive momentum continues with DOE and the State of California working together on the Amended Order to advance cleanup at the site,” said John Jones, ETEC federal project director.

In May, DOE and the State of California signed a consent order to demolish the 10 DOE buildings at the RMHF site. Demolition started in July.

Removing all 10 RMHF facilities, which were used for the processing, packaging, and shipment of radioactive and mixed hazardous wastes, reduces potential risk of release of hazardous substances due to wildfires or erosion from severe storms.

-Contributors: Stephanie Shewmon, Christina Swanson



Hanford WTP Treatment Commissioning Technicians Finish Desk Training

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Workers dismantle transport platforms at the Y-12 National Security Complex so they can be taken to the Oak Ridge National Laboratory. The platforms will be installed to support deactivation activities at the eight-story Experimental Gas-Cooled Reactor.

OAK RIDGE, Tenn. – Reuse of transport platforms — large elevator-like devices installed outside facilities that allow workers to access multiple floors — among EM cleanup projects in Oak Ridge will save nearly $3.5 million.

“Our cleanup program is focused on completing projects successfully while also being extremely mindful of any efficiencies we can achieve to be responsible stewards of tax dollars,” Oak Ridge Office of Environmental Management (OREM) Manager Jay Mullis said. “We recently completed core cleanup at the East Tennessee Technology Park $80 million under budget, and that is a trend we look to continue as we move forward with cleanup at the Y-12 National Security Complex and Oak Ridge National Laboratory (ORNL).”


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A view of one of the transport platforms installed outside the six-story Building 9207 at the Y-12 National Security Complex’s Biology Complex. These platforms allowed crews to move abatement equipment and remove packaged asbestos and hazardous waste from the building’s higher floors and roof.


OREM and cleanup contractor UCOR had the platforms installed at Y-12’s Biology Complex to support deactivation activities to prepare remaining structures in the complex for demolition. The platforms allowed crews to accelerate that work and paved the way for a teardown that began last week.

With the transport platforms, crews were able to more easily move asbestos abatement equipment and restock supplies inside the Biology Complex’s three-story- and six-story-tall buildings. Workers also used the platforms to remove packaged asbestos and hazardous waste from higher floors and the roof.

As the start of demolition on the Biology Complex approached, OREM and UCOR worked collaboratively to identify additional uses for the equipment.

Only a few miles away, at ORNL, OREM and UCOR were starting to plan for another major deactivation project at the Experimental Gas-Cooled Rector. Standing eight stories tall, it presented a perfect opportunity to reuse the platforms.

Due to the size of the reactor, crews will again need additional capacity to reach the upper levels to support deactivation activities.

“Transferring the transport platforms from a cleanup project at Y-12 to one at ORNL became an obvious ‘win-win,’ eliminating the need to buy more costly equipment,” said Dan Macias, Oak Ridge Reservation environmental cleanup program manager for UCOR.

-Contributor: Susanne Dupes



Hanford Meteorological Station: Keeping Workers Safe and History Alive

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The sun begins to rise behind the 400-foot Hanford Meteorological Station tower, a source of current and historical weather data for the Hanford Site since 1944.


RICHLAND, Wash. – At the Hanford Site, weather data drives decisions that keep the workforce safe and healthy through high temperatures in the desert summer, powerful winds, and freezing rain and snow in the winter. The Hanford Meteorological Station is an invaluable resource for work planners and site leaders.

In operation since 1944 and currently managed by EM Richland Operations Office (RL) contractor Mission Support Alliance, the station receives data from 30 instrument towers on and around the 580-square-mile site. The most recognizable to workers is the 400-foot tower located near the center of the site, which collects meteorological data from sensors at several levels of the structure.

The meteorological team’s toolbox also includes remote sensors, giving them an edge in collecting accurate data across the site for the heat index, winter weather, thunderstorms, and wind speeds. Winds can gust above 40 miles per hour more than 20 days during the year.

“The weather station is a significant aid to our workforce, from keeping them safe in the summer heat or providing advance warnings to weather systems such as extreme wind conditions that could impair personal safety or force the temporary halt of work on the site to protect both the workers and the surrounding communities,” said Kyle Rankin, RL chief engineer. “Having access to this data and forecasters who understand weather patterns is a huge asset to the site.”


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From left, meteorologists Matt Eckhoff, Grant Gutierrez, Perry Perrault, and Josh Markel with Mission Support Alliance help monitor weather conditions around the site 24 hours a day, seven days a week. This photo was taken prior to the COVID-19 pandemic.


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Constructed in the 1960s, the current Hanford Meteorological Station replaced the original small two-story station, shown above.


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Bryan Hurt, with Mission Support Alliance’s radio maintenance organization, works on cables for critical communications systems located 365 feet up the 400-foot Hanford Meteorological Station tower.


Handwritten logs dating back to the beginning of site meteorological operations highlight weather data that helped forecast potential impacts from natural disasters and conveyed personal insights on memorable weather moments. Following the eruption of Mt. Saint Helens on May 18, 1980, a forecaster cited “heavy ash” and wrote “the birds don’t know what to do, and I don’t either” in the weather log.

Using decades of historical data and readings from today’s network of sensors, Hanford meteorologists are able to make accurate forecasts of conditions across the site.

“The weather and telephone logs are an exceptional source of information,” said Perry Perrault, Hanford meteorologist and forecaster. “You’ll find historic information on momentous wind storms, blizzards, dust storms, range fires, and thunderstorms over the decades. This data is important for climatology research and daily analysis of the weather for our Hanford Site contractors.”

Check out real-time data from the station here.

-Contributor: Melissa Ver Steeg



Portsmouth Site Installs Water Treatment System for Disposal Facility

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PIKE COUNTY, OhioEM’s Portsmouth/Paducah Project Office is installing the water treatment system for its On-Site Waste Disposal Facility at the Portsmouth Gaseous Diffusion Plant site. The disposal facility will hold much of the debris and other material from demolition of the large gaseous-diffusion process buildings and other plant facilities. Construction crews, led by EM cleanup contractor Fluor-BWXT Portsmouth, recently installed the Modular Leachate Treatment System that includes a million-gallon water tank and support structures. The tank allows for storage of additional water that might result from significant storms.

-Contributor: Donnie Locke



Oak Ridge Employs Drone Technology for Safer Inspections

A drone hovers over the 3039 exhaust stack at Oak Ridge to lower a camera inside to conduct a visual inspection.


OAK RIDGE, Tenn. – What’s the safest way to climb and inspect a 70-year-old, 250-foot-tall brick exhaust stack?

That’s the question employees in Oak Ridge worked to answer, and through the use of technology and innovation, they determined no one had to climb after all.

In October, the Oak Ridge Office of Environmental Management (OREM) used a drone to conduct visual inspections inside and outside the 3039 stack. The chimney-like structure, built in 1950, is located in the central campus area of the Oak Ridge National Laboratory. Due to the age of the structure, it requires periodic inspections to evaluate its structural integrity.

The 3039 stack provides high-efficiency particulate air (HEPA)-filtered ventilation exhaust for numerous radiological facilities, including various isotope facilities in the central campus. OREM is responsible for its operation and maintenance because it is part of the Liquid and Gaseous Waste Operations infrastructure.


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A close-up view of the drone, which resembles a mini-helicopter. Following commands from a ground-based operator, the camera-mounted drone circles around the stack making recordings that can be evaluated by engineers and safety experts.


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EM Update | Vol. 12, Issue 36 | Nov. 24, 2020

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Reuse of Cleanup Equipment in Oak Ridge Saves Millions

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A view of the 3039 exhaust stack, which was built in 1950 and stands 250 feet tall. It provides high-efficiency particulate air (HEPA)-filtered ventilation exhaust for numerous radiological facilities, including various isotope facilities in Oak Ridge National Laboratory’s central campus.


The drone resembles a mini-helicopter. Following commands from a ground-based operator, the camera-mounted drone circles around the stack, searching for flaws that could threaten the stack’s structural integrity. The cameras record as the drone circles the stack and as it is lowered into the stack. Then, engineers and safety experts assess the footage to note any areas of concern.

The external portion of the inspection was performed using an onboard camera system, while the internal portion was performed by hovering the drone over the top opening and lowering the camera into the stack.

Previous stack inspections required inspectors to physically climb the 250-foot-tall structure. Now, technology is eliminating the need for workers to climb the stack and establish work platforms high in the air. This is the latest example of how OREM and its contractors are working together to identify approaches that will keep employees safe while performing EM’s complex and challenging cleanup mission.

-Contributor: Ben Williams

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