Wired: Thorium Reactors
Please take a look at the recent article from Wired.com, on thorium reactors!
[ Link ]
Please take a look at the recent article from Wired.com, on thorium reactors!
[ Link ]
The proposed site is the location of the Portsmouth gaseous diffusion uranium enrichment plant, which operated from 1954 to 2001. The plant and its facilities were then kept in ‘cold standby’ until 2005, when they entered ‘cold shutdown’, and decontamination and decommissioning began. In 2004, US enrichment company USEC selected the Portsmouth site as the home of its American Centrifuge enrichment plant, currently under construction and due to begin commercial operations in 2010.
Babcock & Wilcox announced its intention to put smaller, rail-delivered 125 MW reactor modules, into production by 2018. These units are one-tenth the size of a typical nuclear plant, and this makes them suitable for rural and third-world applications. These reactors are rated for 60 years, with refueling every 5 years.
Source: NuclearStreet.com]
By Stephen Heiser -An approximate 38-megawatt increase in output at an Exelon Nuclear plant last week launched a series of planned power uprates across the company’s nuclear fleet that will generate between 1,300 and 1,500 megawatts of additional generation capacity within eight years without turning a spade of earth, Exelon Nuclear President and Chief Nuclear Officer Charles (Chip) Pardee said today.
The first of the new, carbon-free nuclear megawatts was officially confirmed last week following equipment upgrades at Exelon’s Quad Cities nuclear plant near Cordova, Ill. Other uprate projects are underway and Exelon plans to have the full measure of new megawatts on the grid by 2017.
“With these uprates, we will be able to produce the equivalent output of a new advanced nuclear reactor, and we’ll bring it to market in a timeframe commensurate with the fastest new construction,†Pardee said. “These uprates are a critical component of Exelon 2020, the company’s plan to eliminate the equivalent of its 2001 carbon footprint by 2020.â€
Uprate projects improve the efficiency and increase electricity output of a nuclear generating unit through upgrades to plant equipment. The projects take advantage of new production and measurement technologies, new materials and learning from a half-century of nuclear power operations.
The remainder of uprate megawatts will come from additional projects at nine Exelon plants beginning in 2010 and ending in 2017.
At 1,500 nuclear-generated megawatts, the uprates would displace 8 million metric tons of carbon emissions annually that would otherwise come from burning fossil fuels.
Exelon operates the largest fleet of commercial nuclear reactors in the United States and the third largest in the world. A series of plant upgrades and uprates over the past 10 years have already added approximately 1,100 new megawatts to Exelon Nuclear’s generation.
[From IEEE Spectrum, Energy Wise.]
Two of the largest Japanese utilities, Kyushu Electric Power and Shikoku Electric Power, are preparing to fuel nuclear reactors with rods containing recycled plutonium starting this fall, John Boyd reports from Tokyo. In the middle of last month, two ships arrived from France with loads of mixed-oxide fuel (MOX) containing plutonium that originated in Japanese spent fuels, which Japan is contractually obligated to take back. The MOX consignment from France’s La Hague reprocessing complex weighed an estimated 1700 kilograms.
In exciting news, Los Alamos National Laboratory (LANL) announced this past week the first shipments of remote-handled transuranic waste to the WIPP facility in southern New Mexico.
The Laboratory plans to prepare three to four shipments per week until all 16 canisters are gone.
Thanks to shielding and design, a loaded RH-TRU shipping cask meets the same Department of Transportation radiation safety requirements as a typical shipment to WIPP. Stringent handling procedures and satellite surveillance will keep the public safe.
Dr. John D. Johnson has a background in nuclear, experimental & accelerator physics. He worked for Los Alamos National Laboratory in the 1990s and founded Docent Institute to raise awareness about the ethical use of advanced technology.