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Showing posts with label nuclear. Show all posts
Showing posts with label nuclear. Show all posts

Tuesday, March 13, 2012

News Release from Progress Energy

03/08/2012

Progress Energy implementing post-Fukushima lessons learned

RALEIGH, N.C. (March 8, 2012) – In the year since the tsunamis that caused accidents at nuclear power plants in Fukushima, Japan, Progress Energy has worked with the U.S. nuclear industry, the Nuclear Energy Institute and global resources to understand the events and implement changes to make the company’s plants even safer and better protected.
The company’s response includes in-depth inspections and analyses, physical changes, additional equipment to monitor and respond to potential emergencies, and plans for additional safety and security initiatives.
Progress Energy Chief Nuclear Officer James Scarola has been named as a special liaison for the U.S. nuclear industry’s Fukushima response. In that role, Scarola is helping lead the continuing effort to analyze lessons learned from the Fukushima events and response, and work with regulatory agencies, the industry and other stakeholders to implement enhancement plans at each of the nation’s 104 commercial nuclear plants.
Immediately following the March 11, 2011, accident at Fukushima Daiichi, Progress Energy conducted thorough inspections at each of its four nuclear sites located in the Carolinas and Florida. Plant personnel reviewed each plant’s emergency-response capabilities, written procedures and engineering specifications to verify each site’s ability to respond in the unlikely event of station blackout or record flood.
In 2012, Progress Energy is working to establish industry best practices and improve the safety standards and margin. The U.S. approach to safety at nuclear power plants is based on three layers of safety: protection, mitigation and emergency response. A revised strategy represents a significant expansion of the second layer — the ability to protect the plant and public in extreme external events that may exceed those for which the plant was designed.
Meanwhile, the nuclear industry is in the process of reanalyzing natural disasters, including earthquakes and flooding, to assess the state of readiness in light of the Japan events. U.S. nuclear companies are also adding emergency equipment, such as portable pumps and generators, to perform key safety functions if off-site electrical supplies and several backup power sources are lost to permanently installed safety systems due to natural and/or man-made causes.

Among the additional pieces of equipment, Progress Energy is adding, at each station, a high-capacity pump to maintain the ability to cool the reactor core in an unlikely accident, additional diesel generators for power restoration to critical equipment, and other associated support components (i.e., lights, fans, small generators, direct-current power supplies, pre-staged tool kits, fuel transfer equipment, hoses, cords, fittings, etc.). These systems and pieces of equipment are in addition to the numerous layers of safety measures and systems previously in place.
“At Progress Energy, we are committed to the relentless pursuit of safety,” Scarola said. “We know we need to learn every possible lesson from Japan, and apply those lessons in our quest for continuous improvement. While our nuclear power plants are built to the highest standards, it’s our job to continue to raise those standards by learning from Fukushima — just as we have from best practices and past challenges alike. While there are numerous studies that have validated the safety of our U.S. nuclear plants, our commitment is to make the future operation even safer than it is today.”

Progress Energy (NYSE: PGN), headquartered in Raleigh, N.C., is a Fortune 500 energy company with 23,000 megawatts of generation capacity and approximately $9 billion in annual revenues. Progress Energy includes two major electric utilities that serve about 3.1 million customers in the Carolinas and Florida. The company has earned the Edison Electric Institute's Edison Award, the industry's highest honor, in recognition of its operational excellence, and was the first utility to receive the prestigious J.D. Power and Associates Founder's Award for customer service. The company is pursuing a balanced strategy for a secure energy future, which includes aggressive energy-efficiency programs, investments in renewable energy technologies and a state-of-the-art electricity system. Progress Energy celebrated a century of service in 2008. Visit the company’s website at www.progress-energy.com.
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Sunday, March 4, 2012

Oak Ridge's K-25 Demolition Work

New EM Project of the Month Spotlights Oak Ridge's K-25

Demolition Work

OAK RIDGE, Tenn. — EM focuses on the K-25 demolition project at Oak Ridge in its latest Project of the Month.
Once the world’s largest building under one roof, K-25 reflects less of its former title every day. Due to the partnership between the EM cleanup team and Oak Ridge’s prime environmental management contractor, URS | CH2M Oak Ridge, LLC (UCOR), the 44-acre, multi-level uranium-enrichment superstructure is in the advanced stages of demolition.
Read other news about EM's nuclear cleanup mission here.

Friday, March 2, 2012

Viet Nam's Nuclear Dreams

Excerpt from an article in

The New York Times
Friday, March 02, 2012

Vietnam’s Nuclear Dreams Blossom Despite Doubts

By NORIMITSU ONISHI

HANOI, Vietnam — Inside an unheated classroom at the Institute for Nuclear Science and Technology here about 20 young government technicians from Vietnam’s incipient nuclear power industry kept on their winter jackets on the first morning of a 10-day workshop on radiation.

The workshop, sponsored by the semigovernmental Japan Atomic Energy Agency, started with Radiation Physics 101. The students then collected radiation samples with the help of Japanese specialists and analyzed them in a lab built by Japan.

“Nuclear power is important for Vietnam’s energy security, but, like fire, it has two sides,” said one of the students, Nguyen Xuan Thuy, 27. “We have to learn how to take advantage of its good side.”

As Vietnam prepares to begin one of the world’s most ambitious nuclear power programs, it is scrambling to raise from scratch a field of experts needed to operate and regulate nuclear power plants. The government, which is beefing up nuclear engineering programs at its universities and sending increasing numbers of young technicians abroad, says Vietnam will have enough qualified experts to safely manage an industry that is scheduled to grow from one nuclear reactor in 2020 to 10 reactors by 2030.

But some Vietnamese and foreign experts said that was too little time to establish a credible regulatory body, especially in a country with widespread corruption, poor safety standards and a lack of transparency. They said the overly ambitious timetable could lead to the kind of weak regulation, as well as collusive ties between regulators and operators, that contributed to the disaster at the Fukushima nuclear plant in Japan last year.

Saturday, January 28, 2012

Savannah River Site's H Canyon

From the U.S. Dept. of Energy's Office of Environmental Management:


Savannah River Site’s H Canyon Begins 2012 with New and Continuing Missions

Transuranic waste remediation, new mission work are the focus of the nation’s only active nuclear chemical separations facility in 2012
AIKEN, S.C. – The Savannah River Site (SRS) is breathing new life into the H Canyon, the only active nuclear chemical separations facility still operating in the U.S.
“After a history of primarily dissolving and separating materials found in irradiated reactor fuel rods, H Canyon continues to diversify its scope of work,” said DOE Savannah River Operations Office Manager David Moody. “H Canyon is a huge and dynamic production facility that continues to service the nation’s nuclear needs and does it safely.  It is one of the key facilities in the site’s Enterprise SRS strategic vision.”
Enterprise SRS is an initiative launched last year to transform past environmental liabilities into revitalized assets for future use, including national security, clean energy development, and environmental management.

H Canyon
H Canyon, above, and HB-Line are scheduled to soon begin dissolving and purifying plutonium currently stored at the Savannah River Site to demonstrate the capability to produce oxide material that meets the Mixed Oxide Facility (MOX) feedstock specifications. The production process at MOX, which is now under construction, will eventually create fuel pellets for U.S. commercial reactor fuel assemblies.

New Mission for H Canyon
Excess plutonium in the U.S. has been consolidated at SRS and is currently stored within a highly secure structure at the site. This plutonium will eventually be processed at the site’s Mixed Oxide Facility (MOX), which is currently under construction. The MOX production process will remove impurities from the stored plutonium and mix it with uranium oxide to form MOX fuel pellets for reactor fuel assemblies. When operational, this facility will be capable of turning 3.5 metric tons of plutonium into reactor fuel assemblies annually. Studies are underway to determine the optimum means to supply the feedstock to the MOX.
According to Savannah River Nuclear Solutions (SRNS) H Canyon Facility Manager Mike Lewczyk, H Canyon and HB-Line, which is a sister facility also located in H Area, are scheduled to soon begin dissolving and purifying a quantity of the stored plutonium to demonstrate the capability of producing oxide material that meets MOX feedstock specifications. This new mission for H Canyon, once under way, will produce approximately one metric ton of acceptable plutonium oxide annually after an initial two-year period during which production levels increase. The scope of this mission is expected to be completed in five years and will provide the initial feedstock for MOX. SRNS is the management and operations contractor at SRS.
Increasing H Canyon’s Ability to Process Transuranic Waste
H Canyon is also scheduled to implement a revision to its Documented Safety Analysis to allow the handling and remediation of transuranic (TRU) waste with higher plutonium content than currently permitted in the H Canyon TRU Waste Program. “This revision will significantly increase the number of waste containers we can process in H Canyon, allowing the Savannah River Site to complete this task sooner than originally expected,” said Lewczyk.
The H Canyon TRU work is scheduled for completion by the end of 2012. 
Ensuring Unused Process Lines are Viable for Future Use
Throughout 2012, H Canyon personnel will conduct tests to ensure the major operating systems within production lines formerly used to dissolve and separate nuclear materials run efficiently. These efforts will maintain employee proficiency and keep equipment viable for future missions in the event the production lines are again used to process used fuel or other nuclear materials.
H Canyon History
H Canyon was constructed in the early 1950s and began operations in 1955. The interior of the building resembles a canyon; the processing areas are similar to a gorge in a deep valley between steep, vertical cliffs. It is 1,028 feet long, 122 feet wide and 71 feet tall, with several levels to accommodate the various stages of material stabilization, including control rooms to monitor equipment and operating processes and unique overhead bridge cranes.
Those cranes are used to conduct work remotely to minimize radiation exposure. The thick concrete walls that separate workers from the processing areas provide added protection.
In past operations, H Canyon was used to recover uranium-235 (U-235) and neptunium-237 (Np-237) from aluminum-clad, enriched-uranium fuel tubes of the site nuclear reactors and other domestic and foreign research reactors through a chemical separations process. SRS also recovered Np-237 and plutonium-238 (Pu-238) from special irradiated targets at the facility. Pu-238 was produced by irradiating recovered Np-237 from SRS nuclear reactors that are no longer operational. Pu-238 was then recovered and used in 30 of the National Aeronautics and Space Administration’s deep space exploration programs, such as the Cassini spacecraft.

Friday, January 27, 2012

Savannah River Site 2012 Outlook

From the U.S. Department of Energy's Office of Environmental Management:


Savannah River Site 2012 Outlook: Transuranic Waste Program Set to Safely Reach Milestone

New initiatives, bigger shipping containers and highly trained, innovative workers combine in milestone year
AIKEN, S.C. – In 2012, the Savannah River Site (SRS) is scheduled to achieve a milestone by completing processing of 5,000 cubic meters of legacy transuranic (TRU) waste for shipment to a safe, permanent disposal facility.
A large portion of that waste — a byproduct of nuclear defense program research and weapons production — has already been shipped to the Waste Isolation Pilot Plant (WIPP) in New Mexico. The site will continue shipments until the remaining inventory is removed. Following the scheduled completion of processing the 5,000 cubic meters of TRU waste later this year, only 200 additional cubic meters of TRU waste will remain at SRS for treatment.
“By the end of 2012, we will have remediated, repackaged and certified for shipment all but 200 cubic meters of transuranic waste at SRS, meeting a vitally important milestone for our site-wide cleanup program,” said David Moody, DOE’s Savannah River Operations Office Manager. “This means that over 95 percent of our legacy TRU waste will soon be gone from South Carolina for long-term storage at the DOE Waste Isolation Pilot Plant in Carlsbad, New Mexico, leaving a very small amount that will require some special treatment.”
TRU Waste Processing Enters New Phase
According to John Gilmour, Solid Waste Director at Savannah River Nuclear Solutions (SRNS), the SRS management and operations contractor, success in the TRU program has resulted from several factors. New, larger TRUPACT-III shipping containers eliminate much of the need to manually reduce in size numerous, large pieces of TRU waste, saving time and minimizing employee exposure to radioactive materials, primarily plutonium-238. Plutonium-238 was once used as a heat source to generate power for deep space missions.

1-12 SRS Story 1 Photo  

By May, Savannah River Nuclear Solutions expects to be shipping transuranic waste to the Waste Isolation Pilot Plant almost continuously, using six TRUPACT-III shipping containers like the one shown here.

"By May, we’ll have six TRUPACT-III shipping containers available and the shipping process to WIPP will be almost continuous,” said Gilmour. “Our highly trained and talented workforce has learned to quickly recognize and productively respond to variables found when working with legacy radioactive waste materials.”
Each TRUPACT-III container can hold up to 6.6 cubic meters of TRU waste.
New Mission Takes Shape
A new SRS mission involves use of a previously unused portion of H Canyon to process and repackage plutonium (Pu) oxide.
Most of the Pu oxide in the U.S. has been consolidated at SRS and will eventually go to U.S. commercial power reactors in the form of new fuel rods. However, the relatively small percentage of Pu oxide at SRS without the properties needed for use as commercial reactor fuel will be packaged in rigorously tested containers for shipment to WIPP by SRNS Solid Waste personnel in 2012.  
“Over 100 of these specially designed metal containers, known as Pipe Overpack Containers, or POCs, have already been loaded with Pu oxide,” said Gilmour. “H Canyon has enough Pu oxide to safely fill approximately 600 of these new containers during the current campaign and potentially thousands in the future.”
According to Gilmour, once the project moves to full-production mode next year, he expects to see two to three shipments of unusable Pu oxide leave the site each week, bound for WIPP. Each truckload of waste will contain 35 POCs.


Workers relocate a pipe overpack container used to transport small amounts of excess plutonium oxide destined for long-term storage at the Waste Isolation Pilot Plant in Carlsbad, New Mexico.
  1-12 SRS Story 1 Photo 2

2012 Holds Great Potential for Waste Remediation at SRS
In the past, SRS had a large amount of radioactive material stored in a variety of containers. “This waste would have been here a long time if it hadn’t been for American Recovery and Reinvestment Act funding,” said Gilmour. “It’s going to be a very busy year for SRNS as we safely prepare and send out shipment after shipment of TRU waste and excess plutonium to New Mexico.”
H Canyon is the only active nuclear chemical separations facility still operating in the U.S.

Oak Ridge Lays Out Big Plans for 2012

From the U.S. Department of Energy's Office of Environmental Management, EM Update, Vol. 4, Issue 1, January 2012


Oak Ridge Lays Out Big Plans for 2012

OAK RIDGE, Tenn. – Last year, Oak Ridge’s Environmental Management (EM) program logged one of its most successful years due to sound project management and achievements in American Recovery and Reinvestment Act work.
Oak Ridge plans to maintain that momentum in 2012, and the year is off to a great start. EM employees are making considerable progress on Oak Ridge’s largest projects, specifically the K-25 Demolition Project and Uranium-233 Disposition Project
“Our employees laid an excellent foundation last year through the Recovery Act and cooperation with our newly selected prime contractor, URS | CH2M Oak Ridge,” said Sue Cange, acting assistant manager for EM in Oak Ridge. “Those efforts have set the stage for an ambitious year, allowing us to make substantial gains in our work to meet requirements with regulators, protection of the environment, and furthering DOE’s other missions onsite.”

Oak Ridge K-25
Employees at Oak Ridge are accelerating work at K-25’s East Wing. Sixty percent of the remaining structure is expected to be down by the end of the September. 

Currently, Oak Ridge’s EM program has a list of 40 active projects with a wide range of scopes and complexity. At the East Tennessee Technology Park (ETTP), employees are removing K-25’s East Wing more rapidly than anticipated, with 26 percent of the 796,000-square-foot structure down and 60 percent planned for demolition by the end of September. Built as part of World War II’s Manhattan Project, K-25 housed the world’s first gaseous diffusion plant for enriching uranium.
EM is making progress finalizing the K-25 site’s historic preservation plans, which have been under negotiation since 2006. A final agreement is expected this spring.
Also at ETTP, pre-demolition work is scheduled to begin shortly in Building K-27. The eventual removal of this highly contaminated, 383,000-square-foot former gaseous diffusion facility will substantially eliminate risks and free millions of dollars in security and maintenance costs for cleanup elsewhere.
At the Oak Ridge National Laboratory (ORNL), employees removed the 4,000-gallon Tank W-1A this month. The tank, located in ORNL’s central campus, was the greatest source of groundwater contamination at the site. From 1951 until 1986, the tank collected and stored liquid waste from radiochemical separations and high-radiation facilities at ORNL, until significant levels of soil and groundwater contamination were traced to the vessel. Currently, employees are removing the surrounding contaminated soils. The project is expected to be complete this summer in accordance with the Tennessee Department of Environment and Conservation (TDEC) and the U.S. Environmental Protection Agency’s (EPA) milestone.

Tank W-1A, a 4,000-gallon contaminated tank buried in Oak Ridge National Laboratory’s central campus, was removed from the site in January.
1-12 Oak Ridge Photo 1

Also at ORNL, Oak Ridge’s EM program is advancing the Uranium-233 Disposition Project. In late December, the first shipment of inventory from Building 3019 was sent offsite, marking the beginning of the end for the world’s oldest operating nuclear facility. The first phase of shipments is expected to be complete during the next six to nine months.
 At the Y-12 National Security Complex (Y-12), workers continue performing the second round of Recovery Act projects made possible through savings from previous Recovery Act projects. This second round of projects is directed toward mercury mitigation. For example, EM workers are developing an absorption unit to capture and treat mercury-tainted water from a location that is one of the main contributing factors of mercury entering the Upper East Fork Poplar Creek.  
EM is making headway on its National Priorities List (NPL) Site Boundary Delineation Project, which is in the final stages of characterizing 16,000 acres within the Oak Ridge Reservation. When complete, the uncontaminated areas will be removed from the existing NPL. The list, maintained by the EPA, contains sites with known or threatened releases of hazardous substances, pollutants, or contaminants.
Once areas are removed from the list, they can be approved for a greater range of new development and reuse activities. Most water and soil samples have been analyzed and validated, with the final two samples scheduled for completion this month. The overall project remains on schedule to meet a Sept. 30 milestone with TDEC and the EPA.

Sunday, January 22, 2012

Los Alamos National Laboratory and Zero Wastewater Discharge

News Release from Los Alamos National Laboratory:


LANL achieves milestone on path to zero wastewater discharge

Improved compliance while recycling millions of gallons of industrial wastewater

LOS ALAMOS, New Mexico, January 20, 2012—Millions of gallons of industrial wastewater will be recycled at Los Alamos National Laboratory as the result of a long-term strategy to treat wastewater rather than discharging it into the environment.

The U. S. Environmental Protection Agency, which issues permits for industrial and sanitary wastewater discharges, recently approved the removal of four more outfalls from the Laboratory’s permit. (An outfall is where wastewater from Lab operations is discharged down canyons.)  Only 11 outfalls remain, down from 141 in 1993. 

"One of the objectives of our Environmental Management System is to reduce liquid discharges to a single outfall by the end of 2012," said Dennis Hjeresen, Division Leader of the Environmental Protection Division at the Lab. "Removing four more facilities from our permit is an important step toward reaching that goal."

The wastewater comes from many places at the Laboratory and does many things.  It cools the Los Alamos Neutron Science Center (LANSCE), one of the Lab’s premier science research facilities, and the Strategic Computing Complex, which creates world-class high-performance computing systems. The water also cools the Lab’s power plant and comes out of the sanitary plant that treats water from toilets and sinks.

The treated sanitary wastewater and water flushed from cooling towers is transported to the Lab’s Sanitary Effluent Reclamation Facility (SERF). It then can be reused in cooling towers around the Lab.
"The SERF should be recycling up to 300,000 gallons per day by the summer of 2012," Hjeresen said.


About Los Alamos National Laboratory

Los Alamos National Laboratory, a multidisciplinary research institution engaged in strategic science on behalf of national security, is operated by Los Alamos National Security, LLC, a team composed of Bechtel National, the University of California, The Babcock & Wilcox Company, and URS for the Department of Energy's National Nuclear Security Administration.

Los Alamos enhances national security by ensuring the safety and reliability of the U.S. nuclear stockpile, developing technologies to reduce threats from weapons of mass destruction, and solving problems related to energy, environment, infrastructure, health, and global security concerns.

LANL news media contact: Colleen Curran, (505) 664-0344, colleen_curran@lanl.gov