Sentences with phrase «water reactors of»

Lithuania has a 2500 - megawatt nuclear power plant at Ignalina with RBMK graphite / water reactors of the type which exploded at Chernobyl and caused a scare last month at Sosnovy Bor, near St Petersburg (This Week, 28 March).

And on March 10, 2011, the NRC licensed the boiling - water reactor of similar design and vintage at Vermont Yankee to operate for another 20 years (pdf), just one day before the Fukushima crisis.

Each is a 440 - megawatt pressurised - water reactor of a type called VVER 440/213.

Not exact matches

Under the reactor was a huge pool of water — coolant for the power plant.

However, when asked to comment, one CEO said Canada is in a strong position because Candu reactors use heavy water instead of boiled or pressurized water, which allows the reactor to run on natural uranium instead of enriched uranium fuel.

After the leak of heavy water at the Wolsong nuclear power plant, South Korea is reconsidering its plan to import an additional Candu - 9 model pressurized heavy - water nuclear reactor from Canada.

The Government of Canada could build on this momentum to develop an expanded MoU on civilian nuclear technology co-operation that includes research in pressurized heavy water reactor technology, nuclear medicine and other areas discussed by the prime ministers.

«The Australian water and wastewater industry has been dominated by low pressure in - channel UV systems, but increasingly designers and end - users are starting to appreciate the benefits of closed reactor medium pressure systems.

While GWE's anaerobic waste water technology has been proved worldwide at more than 300 installations of totally enclosed tanks, or reactors, this is the first time it has been applied to a covered lagoon, an application where it has enormous further potential in countries with strong agribusiness sectors.

Under the leadership of GWE President and CEO Mr Jean Pierre Ombregt, GWE's anaerobic waste water technology has been proved worldwide at more than 300 installations of totally enclosed tanks, or reactors.

But community groups are concerned about the potential for accidents, and environmentalists about the toll nuclear takes on water resources and the wildlife killed when reactors use river or lake water for cooling — particularly at Indian Point, less than 30 miles north of New York City on the Hudson River.

Fire protection piping at Indian Point's Unit 2 reactor broke and leaked and though it resulted in a loss of water pressure to the fire suppression system, inspectors from the Nuclear Regulatory Commission determined it was of «very low safety significance,» according to the N.R.C. report.

Officials at the FitzPatrick Nuclear Power Plant near Oswego are investigating why fuel rods in the reactor's core are leaking radiation and while not considered an emergency, it could potentially spread contaminated water to other parts of the plant.

It was not in danger of ever reaching a drinking water source, according to Jim Noggle, branch chief in the agency's region I division of reactor safety.

Water with a little bit of tritium in it is often released from nuclear reactors, notes Gizmodo, and tritium in general (which emits a relatively weak form of radiation) is not dangerous unless it's ingested.

Each day, some two billion gallons of water are pumped from Long Island Sound into the Millstone Power Station in Waterford, Conn. — that state's only nuclear power plant — and used to help cool systems and support the station's two operating reactors.

In fact, throughout the first week of the Fukushima crisis, emergency workers tried to figure out a way to open up a larger hole in the Unit 2 reactor building, which had not suffered an explosion, to allow better access to inject cooling water without creating the kind of spark that might cause another hydrogen blast.

Much as what unfolded during the crisis in Japan, the computer modeling suggested that fuel in one of the two reactors on the Peach Bottom site would begin to melt as soon as nine hours after a loss of cooling water flow.

In the event of a breakdown of pumps that supply the reactor with fresh cooling water, the torus design is supposed to provide additional cooling.

Record dry spring could drive up wheat prices, and lack of water may force nuclear reactors to shut down

Another issue for critics is whether the water delivered from the elevated reservoir in an emergency would continue to cool the reactor if there were a sustained loss of power for emergency pumps.

But because of the location of such pools in older boiling - water reactor designs — specifically, in the upper levels of the reactor building — any water added would ultimately drain down through the building, inundating the emergency pumps in the basement.

Regardless of the ability of the vents to function appropriately, one clear difference exists between the operation of such boiling - water reactors in the U.S. versus those in Japan — in the U.S., reactor operators have the authority to vent radioactive steam or hydrogen gas as conditions warrant.

The resulting organic soup flows into a flash vessel where pressure drops dramatically, liberating some of the water, which returns back upstream to preheat the flow into the first - stage reactor.

Ha and McEwen, a WSU assistant professor of chemical engineering, say they have a solution: a small reactor that inexpensively breaks water and methane into carbon monoxide and hydrogen, which can be used for energy and industrial products.

Water shot out, triggering a 12 - day shutdown of the plant's two reactors located outside Rockford, Ill..

To answer the question of just how harmful leaching could be, the scientists estimated radiation exposure around the coal plants and compared it with exposure levels around boiling - water reactor and pressurized - water nuclear power plants.

That's because researchers have tailored a 3D printer to synthesize pharmaceuticals and other chemicals from simple, widely available starting compounds fed into a series of water bottle — size reactors.

External tanks hold enough additional water to cool the reactor for two weeks in the event of a loss of power as well.

Babcock & Wilcox — one - time builder of large pressurized water reactors as well as smaller ones suitable for the submarines of the U.S. Navy — would like to shrink those down to just 180 megawatts.

The rest of this special News & Analysis section examines what we have learned about radiation risks from previous exposures (p. 1504), improvements in safety since the boiling water designs at Fukushima (p. 1506), what to do with the wrecked reactors (p. 1507), and damage to research facilities from the earthquake (p. 1509).

«You have a hell of a lot more water in the reactor relative to the size of the breaks that can happen,» Mowry explains.

«The staff has contended pretty much all along that they will have to meet the same security requirements as all of the large reactors,» says Michael Mayfield, director of the Division of Advanced Reactors and Rulemaking in the NRC's Office of New Reactors, noting that a timeline for licenses could be expedited if such reactors are simply scaled down versions of existing light water reactors that do not require new regureactors,» says Michael Mayfield, director of the Division of Advanced Reactors and Rulemaking in the NRC's Office of New Reactors, noting that a timeline for licenses could be expedited if such reactors are simply scaled down versions of existing light water reactors that do not require new reguReactors and Rulemaking in the NRC's Office of New Reactors, noting that a timeline for licenses could be expedited if such reactors are simply scaled down versions of existing light water reactors that do not require new reguReactors, noting that a timeline for licenses could be expedited if such reactors are simply scaled down versions of existing light water reactors that do not require new regureactors are simply scaled down versions of existing light water reactors that do not require new regureactors that do not require new regulations.

The pump could not have serviced both of the plant's reactors if they lost normal water supply simultaneously, the NRC staff said.

Led by graduate student Sandra Rincon and her advisor, Haluk Beyenal, professor in the Gene and Linda Voiland School of Chemical Engineering and Bioengineering, the researchers developed a unique biofilm reactor that recycles gasses and uses less water and lower light than typical reactors.

The reactor is now shut down while technicians examine the source of the tritium leak, which has spread in a plume in ground water underneath the lab grounds.

Even if Max can get potable water from the top of his reactor, will such a system ever be commercially viable?

In an article published today in the Proceedings of the National Academy of Sciences titled «Solar photothermochemical alkane reverse combustion,» the researchers demonstrate that the one - step conversion of carbon dioxide and water into liquid hydrocarbons and oxygen can be achieved in a photothermochemical flow reactor operating at 180 to 200 C and pressures up to 6 atmospheres.

San Francisco's Tesla Portal drinking water facility earlier this month awarded a $ 5 - million contract to Pittsburgh's Calgon Carbon Corp. to begin installing 12 of its Sentinel Chevron 48 UV reactors to treat up to 320 million gallons (11.5 million liters) of water daily.

All but two of the 440 or so commercial nuclear reactors operating are thermal, and most of them — including the 103 U.S. power reactors — employ water both to slow neutrons and to carry fission - created heat to the associated electric generators.

«We are the first to use both light and heat to synthesize liquid hydrocarbons in a single stage reactor from carbon dioxide and water,» said Brian Dennis, UTA professor of mechanical and aerospace engineering and co-principal investigator of the project.

The resulting heat is conveyed out of the reactor, where it turns water into steam that is used to run a turbine that drives an electric generator.

This signaling pathway could be used to optimize the photosynthetic efficiency of plants subject to water and nutrient deficiencies, with potential applications in agriculture and reactor - based crop development for green chemistry and algae - based biofuel solutions.

Not to be outdone, Suffolk County Council, on whose flat shoreland stands Sizewell B, Britain's first pressurised - water reactor, has announced a public inquiry into the proposal to build a replica of the PWR on the site.

Most of these thermal systems are what engineers call light - water reactors.

Almost under the blue - green dome of Britain's first pressurised - water reactor, now nearing completion on the flat shoreline of Suffolk, is a purpose - built Job Centre.

On Earth, this radiation shows up in the reactor pools of certain types of nuclear power plants, sparked by high - speed atomic fragments that go shooting through the water.

Workers built an elaborate scrubbing system that removes cesium, strontium and dozens of other radioactive particles from the water; some of it is recirculated into the reactors, and some goes into row upon row of giant tanks at the site.

A series of drains and underground barriers — including a $ 325 - million * supposedly impermeable «wall» of frozen soil — was also constructed to keep water from flowing into the reactors and the ocean.

«Streams and rivers are not only passive conduits of water and terrestrial carbon dioxide, but also function as reactors that generate and release carbon dioxide during transport downstream,» said Erin Hotchkiss.