Sentences with phrase «water reactors designed»

The nuclear plant has two three - loop pressurized water reactors designed by Westinghouse.

Pressurized - water reactors designed by Westinghouse — such those that employ pressurized water and heat exchangers to produce power, unlike the boiling - water variety — face similar challenges.

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.

The SMR - 160 is a single loop, 160 MWe pressurized light water reactor designed by Holtec to be «walk away» safe and commercially competitive.

Lynas goes on, of course, to explain why he remains in support of harnessing nuclear energy, particularly through advanced reactor designs that don't come with the waste stream and complexity of the light - water reactor design that dominates the industry today — overgrown terrestrial versions of the power source in nuclear submarines.

Weinberg thought there was something wrong with light water reactor designs, and his view was influential even among nuclear's antagonists.

That's one of the reason's I like the boiling water reactor design, yeah the reactor vessel is larger but you have no steam generators and no pressurizer, and all that extra water in the downcomers is useful in emergencies.

In 2013, the DOE Office of Nuclear Energy and the NRC began working on how to apply «General Design Criteria for Nuclear Power Plants,» Appendix A to 10 CFR Part 50, to advanced non-light water reactor designs.

Not exact matches

The team's design uses solar energy (captured with photovoltaic panels) to power an electrochemical reactor that converts water and human waste into fertilizer and hydrogen.

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.

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.

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.

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).

So B&W has designed an integral pressurized - water reactor that it can manufacture in a factory and ship to a site.

In addition to its unique fuel cycle, the TerraPower design employs a high - temperature, liquid metal core cooling technology suited to a breeder reactor with «fast» neutron activity, rather than today's predominant reactors whose water cooling systems slow neutrons.

Like mainstream reactors, it is a «light water» design: The reactor is pressurized and filled with plain water that flows past the core, where the radioactive decay of uranium - 235 generates intense heat.

None of Britain's reactors are of the boiling water design (BWR) used at Fukushima.

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.

The design is Westinghouse's take on a third - generation pressurized water reactor, and each one produces about 1,000 megawatts of electricity.

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.

«However, despite repeated commitments to non-light water reactors, and substantial investments by NE (more than $ 2 billion of public money), no such design is remotely ready for deployment today.»

One of their most significant contributions was the design of a concrete shield to prevent molten fuel seeping from the reactor and through the ground into the water table.

All four reactors have a nice primary containment — which means we should not worry very much at this point about the design of our boiling - water reactors and our pressurized - water reactors.

The CAREM design was developed by Invap under contract with the CNEA as a simplified modular pressurised water reactor (PWR) with integral steam generators.

Safety and flexibility NuScale has designed an extraordinarily safe Integral Pressurized Water Reactor (IPWR) based on light water reactor technology proven in operation for over 50 yWater Reactor (IPWR) based on light water reactor technology proven in operation for over 50 ywater reactor technology proven in operation for over 50 years.

(Invited) Recent Progress in Fundamental Photoelectrochemical Studies Relevant to New Low - Cost Designs for Z - Scheme Solar Water Splitting Reactors.

After removal from the reactor core, spent fuel assemblies are placed in dedicated spent fuel storage racks in the below ground spent fuel pool, which contains four times more water volume for cooling per fuel assembly than current designs.

Understanding the kinetics and mechanisms causing intergranular oxidation at the atomic level can improve manufacturing for more durable, corrosion - resistant materials designed for safe application in service environments, for example, in a light - water (nuclear) reactor within its decidedly high - temperature, reactive environs.

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.

The NuScale design also has unique safety characteristics: under abnormal conditions, the reactor can shut itself down and cool itself for indefinite periods without the need for human intervention, water addition or external electricity supplies.

SMR - 160 is a conventional fission reactor, using water as the cooling medium, and is designed with six decades of world - wide industrial operating experience with pressurized water reactors.

Afterwards, he started working in Atomics International of California in a project for the design of a heavy water reactor.

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.

First, by basing the NuScale design on light - water reactor technology, we are able to build on the vast global experience with this technology, including material performance, water chemistry, transient behaviors, etc..

To my mind, the Fukushima failure also builds the case for the kind of push under way in China, which is moving forward with construction of the first two of a new generation of nuclear reactors — cooled by helium, not water, and designed in a way that can not produce a meltdown of the fuel.

Given the nuclear solution requires new reactor designs yet to be built even for demonstration and test purposes, and then the complexities of siting nuclear power plants near the calling water they need while defending them against flood waters makes construction of tested designs take a decade.

Eight of these designs have recently been costed at 40 % less than large, light water reactors.

At present, the Nuclear Regulatory Commission haslittle institutional knowledge of anything other than light - water reactors andvirtually no capability to review or regulate alternative designs.

What's needed now is a new national commitment to the development, testing, demonstration, and early stage commercialization of a broad range of new nuclear technologies — from much smaller light - water reactors to next generation ones — in search of a few designs that can be mass produced and deployed at a significantly lower cost than current designs.

The company pointed out that its own mPower reactor is based on pressurized water reactor technology using standard enriched uranium as fuel, whereas TerraPower's TWR «is a larger reactor based on Generation IV technology and designed to use depleted uranium as fuel.»

[4]» [4] The NuScale design claims to enable the reactor to safely shut down and self - cool indefinitely, with no operator action, no AC or DC power, and no additional water.

US - APWR: The Mitsubishi Heavy Industry US - APWR design is a 1,700 MWe pressurized water reactor being licensed and built in Japan.

However, all of these designs must demonstrate enhanced safety above and beyond current light water reactor systems if the next generation of nuclear power plants is to grow in number far beyond the current population.

SMRs and advanced nuclear reactor designs are also being developed to provide process heat for industrial uses, desalinization of sea water, and district steam heating.