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D&D Industry News

Keep up with deactivation and decommissioning industry news and current events.

West Valley Clears One Large Component After Another From Main Plant

June 19, 2024

An operator uses a fork truck to safely remove a vent washer from the west side of the Main Plant Process Building at the West Valley Demonstration Project.

WEST VALLEY, N.Y. – U.S. Department of Energy Office of Environmental Management (EM) crews safely removed and packaged for disposal another massive component from the Main Plant Process Building recently as part of the facility’s ongoing demolition at the West Valley Demonstration Project(WVDP).

The vent washer weighed approximately 15,000 pounds and was approximately 7 feet wide, 20 feet long and more than 7 feet high. Its removal comes after EM crews successfully cleared the “Green Giant” from the facility. Painted green decades ago, it was a system that held samples from various vessels used in former spent fuel reprocessing operations at West Valley. It weighed 1,100 pounds, with 75,000 pounds of steel and lead shield plates on the outside of it.

"The West Valley Demonstration Project team continues to make great progress in the demolition of the Main Plant as part of our cleanup efforts,” Stephen Bousquet, EM West Valley assistant director of Project Management, said of the vent washer removal.

The vent washer filtered airborne particulates from ventilated air before it passed through HEPA filters and was exhausted through the Main Stack during spent fuel reprocessing operations. The airborne particles originated from sawing and shearing of fuel rods and the ventilation flow from other cells and reprocessing equipment, including ventilation hoods in the Main Plant.

“This all comes down to deliberate speed and comprehensive planning,” Bousquet said. “Developing a comprehensive plan that defines the work, analyzes the hazards, develops controls, and utilizes feedback and lessons learned helped this evolution to be safe and successful."

The vent washer is one of more than 120 items at the Main Plant identified by EM requiring special handling and packaging for disposal.

Crews added a cement mixture known as grout to the vent washer to fix and stabilize internal contamination before pulling it from the Main Plant.

The vent washer was safely taken out of the Ventilation Wash Room through the Main Plant’s west wall. It was then placed in a custom-built waste package, bringing the total weight to more than 135,000. Moving that load posed a challenge to workers, but they did so safely and successfully through special rigging and material handling. The heavily shielded waste box will be disposed of at an offsite facility.

Scott Chase, deputy manager for Facility Disposition for EM cleanup contractor CH2M HILL BWXT West Valley (CHBWV), echoed Bousquet’s sentiment.

“This is the most physically challenging work at the site when you include radiological and industrial hazards, layers of protective clothing and limited mobility,” Chase said. “This crew used lessons learned and planning to enhance safety and improve efficiency. They put their collective knowledge into practice to complete this work evolution safely.”

The Main Plant is one of the last remaining major facilities at West Valley. Its successful demolition will further reduce environmental risks and position the site for the next phase in cleanup. The demolition is expected to be completed in fiscal year 2025.

-Contributor: Joseph Pillittere
-Source: EM Update Newsletter​

Date Created: 5/28/2024 1:00 PM
Title: West Valley Clears One Large Component After Another From Main Plant

EM Team Takes Part in Inaugural Workshop, New Facility for Robotics, AI

June 19, 2024

FIU AI robotics workshop.jpeg
Robotics and Artificial Intelligence Workshop for Nuclear Decommissioning attendees at Florida International University gather for a photo.

MIAMI — U.S. Department of Energy (DOE) Office of Environmental Management (EM) representatives recently explored technical challenges and solutions and celebrated the opening of a new facility for robotics and artificial intelligence research conducted for EM and other organizations during an inaugural workshop hosted by the Applied Research Center (ARC) at Florida International University (FIU).

Held at FIU’s Modesto Maidique Campus and Engineering Center, the Robotics and Artificial Intelligence Workshop for Nuclear Decommissioning kicked off with welcoming remarks from Inés Triay, interim dean of FIU’s College of Engineering and Computing, Leonel Lagos, ARC’s director of research, and Rodrigo Rimando, director of EM’s Technology Operations Office.

Workshop attendees included personnel from EM cleanup sites, DOE national laboratories, DOE contractors, International Atomic Energy Agency (IAEA) and other international research centers, U.S. Army Corp of Engineers, U.S. Department of Defense, Georgia Tech, Institute for Human and Machine Cognition, Florida state and community colleges, and private industry. FIU staff, faculty and students also took part.

FIU technology innovation hub.jpeg
Officials take part in a ribbon cutting ceremony for the Florida International University (FIU) Technology Innovation Hub: Applied Robotics and Artificial Intelligence. From left are Rod Rimando, director of the Technology Operations Office at the U.S. Department of Energy Office of Environmental Management; Himanshu Upadhyay, associate professor for the FIU College of Electrical & Computer Engineering; Heather Russell, vice provost, Faculty Leadership & Success, FIU Office of the Provost; Inés Triay, interim dean, FIU College of Engineering and Computing; and Leonel Lagos, director of research, FIU Applied Research Center, and associate professor, Moss Construction Management.

The first day of the workshop was dedicated to technical challenges at federal agencies such as DOE and across the globe from the perspective of IAEA.

The second day addressed technical solutions being developed and implemented at DOE sites, national laboratories and contractors, and other federal agencies.

The third day’s focus was on the presentation of several international projects conducted at IAEA, as well as other agencies in Germany, Norway and South Korea. Participants also discussed workforce development needs and opportunities.

Workshop participants also inaugurated FIU’s Technology Innovation Hub: Applied Robotics and Artificial Intelligence. Heather Russell from FIU’s Office of the Provost delivered brief remarks and assisted in the ribbon cutting ceremony. The new facility will serve as a focal point for robotics and artificial intelligence research being conducted for EM, other federal agencies, private industry and international partners. It will also serve as a training and education center for science, technology, engineering and math (STEM) students interested in research and development in those areas.

The ribbon cutting ceremony was followed by lab tours of the newly inaugurated research facility, as well as other labs at ARC supporting EM and DOE Office of Legacy Management applied research as part of a cooperative agreement between DOE and FIU.​

-Source: EM Update Newsletter

Date Created: 5/21/2024 12:00 AM
Title: EM Team Takes Part in Inaugural Workshop, New Facility for Robotics, AI

West Valley Ships Eight Large Legacy Waste Containers for Disposal

June 19, 2024

West valley ships large legacy waste containers.jpeg

Workers at the West Valley Demonstration Project use a large crane to load one of eight containers of legacy waste into an engineered overpack for safe shipment to an offsite disposal facility.

WEST VALLEY, N.Y. — Crews with the U.S. Department of Energy Office of Environmental Management(EM) recently met a fiscal year goal at the West Valley Demonstration Project by shipping eight containers of legacy waste each weighing up to 94,000 pounds for offsite disposal.

The effort by EM and cleanup contractor CH2M HILL BWXT West Valley (CHBWV) involved comprehensive planning, engineered safeguards, continuous communication and teamwork.

“The West Valley Demonstration Project team continues to use planning, teamwork and deliberate execution to complete challenging work safely,” said Stephen Bousquet, EM West Valley assistant director of Project Management. “By removing legacy wastes, we continue to position the site for future cleanup activities.”

Workers used a large crane to pick up and lower each container into an engineered overpack, which serves as a secondary layer of protection. They loaded the overpack containers onto trailers and transported them by truck to a local rail transload facility. There, the shipment was securely loaded onto rail cars for transportation to an approved disposal facility in Texas.

The legacy waste was removed from the former Fuel Receiving and Storage Facility. The building was used from 1965 to 1972 to receive and store spent nuclear fuel before it was reprocessed to recover reusable plutonium and uranium.

“Our team members continue to use their combined knowledge to safely and deliberately complete high risk work activities,” CHBWV Waste and Site Operations Manager Peggy Loop said. “I’m proud of their efforts, accomplishments and work they continue to do on this project.”

This latest achievement joins a list of fiscal year goals EM crews have completed at West Valley, including the removal of old locker rooms and the original guardhouse, installation of new walkways, construction of a new access roadway between the north and south parking lots, and collection of a sample in an underground tank that stored high-level liquid waste from spent fuel reprocessing operations.

-Contributor: Joseph Pillittere
-Source: EM Update Newsletter​

Date Created: 5/14/2024 10:00 AM
Title: West Valley Ships Eight Large Legacy Waste Containers for Disposal

Oak Ridge Completes First Phase of New Disposal Facility Project

June 19, 2024

Work is now underway for the second phase of construction for the Environmental Management Disposal Facility. Site development continues as part of a groundwater field demonstration.

OAK RIDGE, Tenn. — The Oak Ridge Office of Environmental Management (OREM) and contractor UCOR have completed the first phase of construction for the Environmental Management Disposal Facility (EMDF).

EMDF will provide the waste disposal capacity OREM needs to complete cleanup at the Y-12 National Security Complex (Y-12) and Oak Ridge National Laboratory (ORNL).

Field work for early site preparations began in August following a groundbreaking ceremony with congressional leaders and officials from the U.S. Department of Energy (DOE), U.S. Environmental Protection Agency (EPA) and Tennessee Department of Environment and Conservation (TDEC).

Tasks in this subproject included tree felling, clearing 27 acres of land, rerouting of two roads and site preparation. That work, with a project cost of $27 million, was completed safely, under budget and ahead of schedule.

The kickoff for this work followed a decade of planning, regulatory decision-making and preparation, culminating in a record of decision signed by DOE, EPA and TDEC in September 2022.

“Early site prep completion is a big milestone for us,” EMDF Director Sean Dunagan said. “It paves the way for the next phase of work and keeps this critical project on schedule. All parties involved worked together to get to this point and I’m excited that the EMDF project is moving into the next phase.”

The completion of early site preparation is a major milestone for EMDF and sets this critical project on a solid path to timely completion.

The current onsite disposal facility, the Environmental Management Waste Management Facility, is nearing capacity after supporting cleanup of the East Tennessee Technology Park and ongoing demolition projects at Y-12 and ORNL.

While the first phase of field work for EMDF is complete, work continues.

The second phase, a groundwater field demonstration, is underway. It includes continued development of the site, earthwork and installation of groundwater monitoring wells. This phase will continue over the next two years, leading to the final phase of EMDF construction.

The facility is slated for completion in 2030.

-Contributor: David Barton
-Source: EM Update Newslettter​

Date Created: 5/14/2024 9:00 AM
Title: Oak Ridge Completes First Phase of New Disposal Facility Project

Los Alamos Public Forum Engages Community on Chromium Project

June 19, 2024

los alamos - Ines Triay FIU CEC interim dean.jpeg

Pictured on screen is Inés Triay, interim dean, College of Engineering and Computing, and executive director for the Applied Research Center of Florida International University. Triay shares details about the Hexavalent Chromium Project Expert Technical Review Team. On stage at table, left, is Ellie Gilbertson, acting manager for the Environmental Management Los Alamos Field Office, and John Rhoderick, director, Water Protection Division for the New Mexico Environment Department. Gilbertson and Rhoderick provide agency perspectives on the technical review.

LOS ALAMOS, N.M. — More than 100 in-person and virtual attendees gathered at a recent Environmental Management Cleanup Forum to hear leadership from the Environmental Management Los Alamos Field Office (EM-LA) and the New Mexico Environment Department (NMED) discuss a mutual initiative for a hexavalent chromium groundwater plume beneath the Los Alamos National Laboratory (LANL).

EM-LA legacy cleanup contractor Newport News Nuclear BWXT-Los Alamos hosted the forum at the SALA Event Center in Los Alamos. The event served as an overview and introduction to the Hexavalent Chromium Project Expert Technical Review Team, which has been tasked to evaluate the effectiveness of the chromium plume interim measures.

The purpose and necessity of the review team was explained by Inés Triay, interim dean, College of Engineering and Computing, and executive director for the Applied Research Center of Florida International University. Triay is the appointed lead of the review team.

The team will evaluate five lines of inquiry, including the ability of the interim measures to hydraulically control the plume, state of plume modeling, NMED’s proposed corrective actions and conditions, readiness to propose and begin evaluating remedial alternatives, and monitoring of well design.

EM-LA and NMED jointly agreed on the review team members, which include environmental engineers, hydrologists, geologists and geophysicists. They come from the Network of National Laboratories for Environmental Management and Stewardship, industry, academia and the U.S. Environmental Protection Agency Region 6. The 15 team members will provide unbiased recommendations and lead technical discussions of its findings and conclusions to help EM-LA and NMED on a path forward regarding the chromium project.

The second half of the forum was open to a public Q&A. Residents of Los Alamos County and Northern New Mexico and stakeholders asked questions about the technical review and the hexavalent chromium plume that exists in the regional aquifer beneath LANL.

The team expects to complete its review and a report by the end of the year.

-Contributor: Marilyn Matthews-Gordon
-Source: EM Update Newsletter​

Date Created: 5/7/2024 11:00 AM
Title: Los Alamos Public Forum Engages Community on Chromium Project

EM's Carlsbad Office Sends Tool to Hanford to Boost Waste Certification Work

June 19, 2024


Crews unload five trucks from the Carlsbad Field Office with more than 60 tons of specialized equipment for the Hanford Site’s transuranic waste program.

RICHLAND, Wash. — Crews at the Hanford Site received five truckloads of specialized equipment that will double Hanford’s capability to certify containers of transuranic waste to meet requirements for shipment to the Waste Isolation Pilot Plant (WIPP) in New Mexico for disposal.

The special delivery from the U.S. Department of Energy Office of Environmental Management (EM) Carlsbad Field Office, which oversees WIPP, included a refurbished large box counter for measuring the amount and type of radioactive waste in containers.

“The large box counter greatly enhances Hanford’s capacity to safely and effectively certify transuranic waste as we prepare to resume shipments to WIPP,” said Kelly Ebert, EM acting director for projects and facilities at Hanford. “Refurbishing the existing equipment resulted in significant time and cost savings compared to purchasing it new.”

Transuranic waste consists of tools, rags, protective clothing, sludges, soil and other materials contaminated with radioactive elements including plutonium. These human-made elements have atomic numbers greater than uranium on the periodic table of elements — thus “trans-uranic” or beyond uranium — and require long-term isolation from the public while their radioactivity decays.

“With thousands of containers of transuranic waste in storage at Hanford, the large box counter is a critical tool for increasing the speed and efficiency of certifying waste,” said Tim Southworth, transuranic waste program manager for Hanford contractor Central Plateau Cleanup Company.

Crews will begin certifying transuranic waste at Hanford in 2026, with shipments to WIPP expected to start in 2028.

-Source: EM Update Newsletter

Date Created: 4/30/2024 11:00 AM
Title: EM's Carlsbad Office Sends Tool to Hanford to Boost Waste Certification Work

Waste Isolation Pilot Plant Plans More Infrastructure Upgrades

June 19, 2024


A view of the Waste Isolation Pilot Plant, where crews are revamping a piece of underground infrastructure vital to the U.S. Department of Energy Office of Environmental Management's vital national security and environmental cleanup missions.

CARLSBAD, N.M. — A critical piece of underground infrastructure at the U.S. Department of Energy Office of Environmental Management’s (EM) Waste Isolation Pilot Plant (WIPP) is about to get a makeover.

A mammoth-sized, steel-framed bin, known as the “salt pocket,” will undergo a much-needed overhaul starting this summer.

This work is part of EM’s ongoing effort to upgrade WIPP’s infrastructure to ensure the facility remains ready to support its vital national security and environmental cleanup missions.

WIPP, the nation’s only repository for defense-related transuranic waste, emplaces waste 2,150 feet underground in rooms mined from a thick layer of salt. Transuranic waste is comprised of debris, residues, soil, and other items contaminated with radioactive elements — largely plutonium — that have atomic numbers greater than uranium.

The underground salt pocket is used to stage mined salt before it’s safely lifted to the surface via a salt hoist.

“The salt pocket is critical to our continued success as we safely dispose of the nation’s defense-related transuranic waste,” said EM Carlsbad Field Office Manager Mark Bollinger. “Investing in this project will ensure we maintain our capability to efficiently stage mined salt until it’s ready to be removed from the underground repository.”

A deep dive into the salt pocket

In the mine, salt is offloaded 8 tons at a time into the salt pocket. The pocket, which extends approximately 55 feet below the depth of the salt hoist station, is supported by a steel framework that includes a measuring flask and gate for batching salt into an 8-ton skip to be hoisted. The skip, a vertical metal box with a bottom door dump, rides to the surface on guides, where it is dumped into 40-ton haul trucks and taken to WIPP’s salt stockpiles.

EM relies on the salt hoist to remove salt from the WIPP underground. While salt can be temporarily stockpiled in the mine’s drifts, or passageways, “skipping” it to the surface immediately is the preferred method.

Salado Isolation Mining Contractors, WIPP’s management and operations contractor, selected Cementation, a global mine contracting company with a United States office in Salt Lake City, Utah, to perform the work. The project is expected to finish this year.

The work includes demolishing the existing loading pocket and structural steel, remining and supporting the ground, and constructing an entirely new loading pocket, inclusive of new skip guides at the mine level.

Lithostatic pressure in the underground

WIPP’s mine is located in an underground salt layer so that emplaced waste can be encased over time by the salt, which moves, or creeps, at a rate of 2 to 6 inches per year.

This same salt creep also eventually squeezes manmade structures — known a lithostatic pressure — in the underground repository, such as the structural steel supporting the salt pocket.

It’s because of this pressure on the structure — combined with 25-plus years of service — that WIPP’s salt pocket needs to be refurbished.

Located in Southeast New Mexico about 26 miles east of Carlsbad, WIPP was constructed in the 1980s for disposal of defense-generated transuranic waste. The repository is carved out of a 2,000-foot-thick salt bed formed 250 million years ago. Transuranic waste is disposed of 2,150 feet underground in rooms mined from the salt bed.

-Contributor: Roy Neese
-Source: EM Update Newsletter​

Date Created: 4/23/2024 1:00 PM
Title: Waste Isolation Pilot Plant Plans More Infrastructure Upgrades

EM Crews Complete Repairs on Oak Ridge’s Tallest Stack

June 19, 2024


The 250-foot tall 3039 stack is one of the oldest structures at Oak Ridge National Laboratory, dating back to 1949. It is located in the heart of the site and provides essential support to ongoing operations.

OAK RIDGE, Tenn. – The iconic 3039 stack has towered over the Oak Ridge National Laboratory (ORNL) since the lab’s earliest days, providing ventilation to operations at the site. However, recent inspectionsrevealed portions of the landmark had deteriorated and required repairs.

The Oak Ridge Office of Environmental Management (OREM) performs periodic inspections of the structure to identify any defects or other issues. In recent years, OREM and its contractor, UCOR, used drones to conduct those inspections to avoid having employees climb the towering structure, which could cause further wear and tear.

Information gathered from aerial photos proved the necessity for a full physical inspection. UCOR selected International Chimney Corporation as the vendor to conduct the inspection — the same company that built the stack 75 years ago.

Because of the amount of degradation at the top of the 250-foot stack, UCOR recently removed the top five feet of the structure and installed a new stack cap. During that period, operations connected to the stack were shut down.

Now, the repair work is complete, and operations have resumed.

“The 3039 stack, despite being one of the oldest structures at the site, still provides an essential function to ORNL operations,” said James Daffron, acting ORNL portfolio project director. “Maintenance is essential to ensure continued use of the facility.”

OREM expects the stack to remain in place for 10 more years before it’s taken down, so these repairs help ensure it continues operating safely in the heart of ORNL.

With the removal work completed, the stack has been successfully restarted and is once again providing ventilation to the site.

UCOR worked closely with ORNL management-and-operating contractor UT-Battelle and another site cleanup contractor, Isotek, to plan for the outage and ensure minimal impact to operations.

-Contributor: Shannon Potter
-Source: EM Update Newsletter​

Date Created: 4/16/2024 10:00 AM
Title: EM Crews Complete Repairs on Oak Ridge’s Tallest Stack

Hanford Plant Brings Second Melter Online

June 19, 2024

hanford plant brings second melter online.jpeg

Workers with the Hanford Site’s Waste Treatment and Immobilization Plant inspect one of the plant’s large melters during its heatup process.

RICHLAND, Wash. — Crews at the Hanford Site’s Waste Treatment and Immobilization Plant (WTP) recently brought the second of two 300-ton melters up to the operating temperature of 2,100 degrees Fahrenheit as part of EM’s Direct-Feed Low-Activity Waste Program.

The achievement represents significant progress toward starting plant operations to immobilize in glassmillions of gallons of radioactive and chemical waste from large underground tanks.

“Heating up the second melter is an important achievement for our Hanford team and represents another critical step in our journey to safe and efficient tank waste immobilization and disposal,” said Brian Vance, EM Office of River Protection and Richland Operations Office manager. “This success is the culmination of years of effort by our talented workforce, past and present, representing our commitment to advancing our cleanup mission and delivering taxpayer value.”

WTP personnel began heating up the melter on March 12 by turning on 18 temporary startup heaters. The melter temperature was then gradually raised, reaching an operating temperature of 2,100 degrees on March 23. WTP personnel will allow the melter to stabilize at this temperature before small glass beads, known as frit, are loaded into the melter to establish a molten pool of glass.

Crews will then remove the startup heaters in the top of the melter and replace them with bubblers that circulate air in the molten glass and help maintain an even temperature.

EM Hanford contractor Bechtel National Inc. is commissioning the WTP.

"We are immensely proud of the heatup of Melter 2," said Brian Hartman, Bechtel senior vice president and project director for WTP. “This milestone reflects the dedication, expertise and collaborative spirit of our employees, contractors and partner, the Department of Energy. By incorporating the lessons learned from the first melter, we have reached this historic milestone safely and efficiently, underscoring our commitment to excellence and safety."

After running clean glass through the second melter, both melters and facility systems will go through several months of testing using simulated waste. Plant personnel will then run tests on the facility’s exhaust systems that remove contaminants.

When hot commissioning begins next year, tank waste treated to remove radioactive cesium and solids will be fed to the melters and mixed with the molten glass. That mixture will be poured into stainless steel containers to cool prior to transporting them the short distance to Hanford’s Integrated Disposal Facility.

Information on the WTP commissioning process is available on the Journey to Melter Heatup website. The plant facilities can be viewed using the self-guided Hanford Virtual Tour.

-Contributor: Tyler Oates
-Source: EM Update Newsletter​

Date Created: 4/9/2024 12:00 PM
Title: Hanford Plant Brings Second Melter Online

Savannah River Site Team’s Creative Solution Furthers Tank Waste Retrieval

June 19, 2024


Savannah River Site workers move an innovative grinder into place for mock-up testing before proceeding to a tank where the tool will be used to grind residual welding material inside a waste tank riser.

AIKEN, S.C. — Innovation fueled the creation of a new tool at EM's Savannah River Site (SRS) that helps ensure equipment being lowered into an underground liquid waste tank does not encounter any interferences.

This grinding tool, built by the construction team for SRS liquid waste contractor Savannah River Mission Completion (SRMC), was needed to remove obstructions inside of a tank top opening — known as a riser — in H Tank Farm, one of two groupings of underground waste tanks at SRS. The tanks hold radioactive liquid waste generated as byproduct from the processing of nuclear materials for national defense, research, medical programs, and for NASA missions. Risers are used to insert equipment, such as mixing pumps and jets, into the waste tanks.

The obstructions included remnants of welding material left over from equipment previously removed from the tank in the 1970s. With obstructions remaining on the inside of the riser, crews would be unable to insert a mixing pump needed for waste removal and tank closure activities.

The team took on the difficult task led by Tony Smith, construction superintendent, and Beau Nichols, discipline engineer. Both Smith and Nichols were supported by pipefitters, the radiological protection group, and the inspection and monitoring team. The groups developed, tested and perfected the tool and its use though several mock-up evolutions.

“The tool we used was a disc grinder, with diamond grit coating, attached to a 20-foot steel tube,” Nichols said. “It utilizes guide bars on one end to prevent the disc from grinding too deeply into the riser, as well as some modifications that allow the grinder to be operated by workers who must stand at a safe distance.”

The tool is suspended overhead from a crane and is secured at the riser opening to maintain a consistent elevation for the grinding.

Pipefitters in a protective hut were able to view their work on a closed-circuit TV monitor staged in the hut, while live video was provided by a camera attached to the tool just above the grinder. The superintendent and radiological protection personnel also viewed the video feed in a nearby command trailer while providing guidance through radio communication.

Jim Folk, DOE-Savannah River assistant manager for waste disposition, said clearing the access riser was an important step for continued treatment of the tank’s waste.

“Successful waste removal is the first step toward operational closure of a liquid waste tank,” Folk said. “This tank is one of several that is entering final stages of removal from use, and this creative solution helps the tank remain on its path to closure.”

-Contributor: Jim Beasley
-Source: EM Update Newsletter​

Date Created: 4/2/2024 11:00 AM
Title: Savannah River Site Team’s Creative Solution Furthers Tank Waste Retrieval
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