Sentences with phrase «cooling reactor»

When auxiliary batteries were exhausted, the plant was without power to continue cooling reactor cores and spent fuel pools.

Nuclear power plant operators would purchase and store portable equipment that could be used to provide additional means of cooling the reactor, a plan that could be in place as soon as 2015.

However, the power plant needs a permit from New York State to use Hudson River water to cool its reactor cores.

Indian Point needs state permits to use water from the Hudson River to cool its reactors and then discharge the warm water back into the river.

And there is some somewhat alarming language that talks about, and I'll just quote «the IAEA tells us the earthquake triggered a power failure at the Fukushima Daiichi unit 2 nuclear power plant, and then when a backup generator also failed, the cooling system was unable to supply water to cool the reactor.

The meltdown started when water to cool the reactors fell to dangerously low levels four hours after the fourth - largest recorded earthquake rattled the Fukushima Daiichi nuclear power plant.

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.

Helium gas cools the reactor and transports heat to outside the core.

Irradiated fuel from Nuclear Electric's advanced gas cooled reactors was expected to be processed at Sellafield, in the thermal oxide reprocessing plant, which still needs government approval to begin operating.

There are some 50 modular designs being developed globally, and while many are traditional light water reactors, which use water to cool the reactor core, others gain efficiency by using coolants such as gas, which allow reactors to reach higher temperatures.

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

The plant's operator, Tokyo Electric Power Co. (TEPCO), responded by cooling the reactors with water, which continues today.

On 14 March, engineers decided they had to take further steps to cool the reactor vessel down, and so began pumping sea water into the vessel along with boron, an element that dampens nuclear reactions by soaking up the neutrons which drive them.

The problem appears to be not that the reactors might overheat because of the lack of water but that the depleted rivers might overheat, creating ecological havoc, when the water returns to them after cooling the reactors.

Novel designs with alternative cooling fluids other than water, such as Transatomic Power's molten salt — cooled reactor or the liquid lead — bismuth design from Hyperion Power, are in development.

As the recent meltdown in Fukushima showed, the design of these reactors» systems, such as the donut - shaped «suppression pool» of water meant to cool the reactor in a crisis, showed flaws — flaws identified by regulators decades ago.

As well, Diablo Canyon's on - site desalination plant, which provides fresh water to cool the reactors themselves, has two reserve pools of 2.5 million gallons each, which are above the reactors and could be tapped if the plant goes down.

The second generation of Magnox reactors, installed at Oldbury and Wylfa, use concrete pressure vessels, as do the advanced gas - cooled reactors that followed them.

Until now, U.S. safety regulations have been based on ensuring plants are designed to withstand certain specified failures or abnormal events, or «design - basis - events» — such as equipment failures, loss of power, and inability to cool the reactor core — that could impair critical safety functions.

Ultimately, they retrofitted the Convair B - 36, a hybrid prop / jet - engine bomber weighing more than 400,000 pounds * (181,435 kilograms) and with a wingspan of 230 feet (70 meters), to house an air - cooled reactor in the aft bomb bay.

Hamid Aït Abderrahim, deputy director of SCK - CEN, says that Guinevere, which is based around a 1 - kilowatt lead - cooled reactor, is a «reduced» model of a much larger ADS, called Myrrha, whose construction will start in 2015.

Gas - cooled reactors Developed in the UK, these reactors use graphite to moderate neutrons and carbon dioxide to cool the core.

[28] She programmed the Aberdeen Proving Ground's ENIAC to solve criticality problems for a liquid metal cooled reactor using the Monte Carlo method.

Gorensek MB, «Hybrid sulfur cycle flowsheets for hydrogen production using high - temperature gas - cooled reactors», International Journal of Hydrogen Energy, 36 (20), 12725 - 12741 (2011).

The PRISM reactor builds on this sodium - cooled reactor experience first pioneered in 1951 to turn the binding energy of the atom into electrical energy.

The high - flux research reactor SM - 3 is a vessel - type water - cooled reactor operated at intermediate neutrons.

The NuScale Power Module ™ and power plant design enhances the intrinsic physical protection and security of the plant through the elegantly simple design, elimination of large break loss of coolant accidents, and full reliance on passive systems to cool the reactors and spent fuel for extended periods without the need for AC power, DC power or additional water following an upset condition.

Sodium - cooled reactors have safely operated at many sites around the world.

Both aSMR designs share fundamental features, such as high energy neutrons, liquid sodium cooling and metallic fuel, which provide inherent safety performance and more economically competitive plant architecture compared to traditional water - cooled reactors.

575 Chris Dudley «Gas cooled reactors still need water to generate electricity» what incredible duplicity that kind of a comment is.

The pressure vessel head has been installed at one of the two high - temperature gas - cooled reactor units that make up the demonstration HTR - PM plant under construction at Shidaowan in China's Shandong province.

Also, the many alternatives to water moderated and cooled reactors were not pursued, mostly for political reasons.

This makes very good sense to me, the cost would drop dramatically if we changed our regulation environment for nuclear, the new passive cooling reactors are much much safer than older reactor designs, and regional storage (which we have de facto anyway) solves the waste problem.

The Russian Alfa - class submarines used lead - cooled reactors, primarily for quiet operation (no pump noise) so there is a substantial body of practical experience available.

Lead cooled reactor accident risk limited to the loss of reactor itself without effecting enviroment.

However, the emergency batteries that were providing power to cool the reactor cores soon ran out.

The country recently built and started operating a small 10 - megawatt helium - cooled reactor, and it is building a commercial version now that's scheduled to be ready by 2017.»

«Yet newer helium - cooled reactors designs have proved attractive — at least in China.

One design, by MIT professor Charles Forsberg, called the AHTR, combines a flouride - salt - cooled reactor with a gas turbine; one variation on it incorporates injecting gas to the turbine for high temperature turbine generation, so that the power plant can operate for both baseload and peak power.

Flouride salts hold heat almost as well as water, so make for good coolant, but remain liquid up to 1300C, so unlike water - cooled reactors can operate at higher temperatures, for better efficiency, and without pressurized vessels, making them both safer and less costly.

In 2006, nuclear power plants across Europe were curtailed when rivers became too hot to safely cool reactors.

Gas cooled reactors still need water to generate electricity and water for a heat sink at the cold end.

Also water is not required for the gas cooled reactors, nor the safest geniv which the pebble bed reactor.

Many people have commented saying we should build nuclear plants, and this may be fine for those countries with vast water supplies, but down here in Australia, where we have had a drought for the past 12/13 years, nuclear reactors require far too much water to cool their reactors.

Three piping loops would cool the reactor: the primary loop (using molten sodium), an intermediate sodium loop between the radioactive primary system and the steam generators, and a water loop to generate steam for the turbine.

High - temperature, gas - cooled reactors promise a particularly high - efficiency and scalable route to combined power and hydrogen production.

For heavy - water - cooled and some gas - cooled reactors it has, of course, always been 1.000.

Or invest in generating more power with nuclear — in particular recycling our existing waste with passively cooled reactors.

Not exact matches

Japan declared a nuclear emergency after attempts to cool off a reactor in Fukushima failed.

Baffle bolts hold in place baffle plates, which channel cooling water to the reactor core.