Water reactor plant. Medical search. Frequent questions

The international business arm of Russia's state-owned nuclear power company has received a license that will allow construction of small modular reactors (SMRs), based on the design used in the country's icebreaker shipping fleet, at ground-based nuclear power plants. (powermag.com)
They range from advanced light-water-cooled small modular reactors to new designs that use molten salts and high-temperature gases to flexibly operate at even higher temperatures and lower pressures. (energy.gov)
New nuclear technologies, such as small modular reactors (SMRs), are therefore gaining more focus and being investigated. (lu.se)
But with new wind power and hydropower facing public resistance, new energy technologies, such as new nuclear technologies called small modular reactors (SMRs), are gaining more focus, and being investigated in the country. (lu.se)

INTERNATIONAL ATOMIC ENERGY AGENCY, Plant Life Management for Long Term Operation of Light Water Reactors, Technical Reports Series No. 448, IAEA, Vienna (2006). (iaea.org)
In addition, light-water reactors make up the vast majority of reactors that power naval nuclear-powered vessels. (feministlawprofessors.com)
There are three varieties of light-water reactors: the pressurized water reactor (PWR), the boiling water reactor (BWR), and (most designs of) the supercritical water reactor (SCWR). (feministlawprofessors.com)

CVCS filter elements are expected to provide maximum removal of irradiated particulate and eliminate erosive wear of reactor coolant pump (RCP) seal surfaces. (pall.com)
A 2014 book saw reactor conceptual design of a thermal spectrum reactor (Super LWR) and a fast reactor (Super FR) and experimental results of thermal hydraulics, materials and material-coolant interactions. (wikipedia.org)
The reactor outlet coolant is supercritical water. (wikipedia.org)
Light water is used as a neutron moderator and coolant. (wikipedia.org)
It is not possible in LWRs due to the recirculation of hot reactor coolant. (wikipedia.org)
3] The purpose of this experiment was to determine the feasibility of a nuclear reactor using light water as a moderator and coolant, and cladded solid uranium as fuel. (feministlawprofessors.com)
Although the coolant flow rate in commercial PWRs is constant, it is not in nuclear reactors used on U.S. Navy ships. (feministlawprofessors.com)
No injection of water into the Reactor Coolant System occurred. (nrc.gov)
A loss of coolant water to a reactor core at the nuclear power plant caused it to partially melt down, releasing radioactive gases into the atmosphere. (cnduk.org)
The reactor will use a TRISO fuel pebble bed design with a molten fluoride salt coolant and will achieve a thermal power level of 35 MWth. (energy.gov)

Analytical results from a routine sampling event indicated elevated levels of tritium in the monitoring well closest to the reactor building. (energysolutions.com)
As is well known, a nuclear reactor releases radioactive gases like tritium, argon, xenon, carbon14 and iodine, regularly during normal operations, mainly through its 100 meters high stack. (countercurrents.org)
For the last few months, plant technicians have been trying to find the flaw that is allowing water with tritium in it to seep out of the spent fuel pool for the Indian Point 2 reactor, but one of the radioactive materials discovered on Tuesday, nickel-63, is more likely to have come from the pool at Indian Point 1, a plant official said. (ipsecinfo.org)

State-run PSUs Nuclear Power Corporation of India Limited (NPCIL) and Bharat Heavy Electricals Limited (BHEL) have entered into an MoU to jointly pursue business opportunities in the area of Nuclear Power Plants based on Pressurized Heavy Water Reactor (PHWR) technology. (psuwatch.com)
BHEL is a leading manufacturer of power plant equipment (nuclear, hydro, thermal, and renewables) and is the only Indian company to be actively associated with all three stages of the Indian Nuclear Programme (1st Stage PHWR, 2nd Stage FBR, and 3rd Stage AHWR), providing sustainable and customer-centric solutions for over five decades. (psuwatch.com)
Pakistan also has a Canadian-supplied 125 MWe pressurized heavy water reactor (PHWR) near Karachi, known as Kanupp. (world-nuclear-news.org)

U.S. envoy Christopher Hill says Washington regards the reactor shutdown as 'just the first step' toward nuclear disarmament in a deal for fuel and other aid to North Korea. (rferl.org)
When the earthquake hit with 8.9, the nuclear reactors all went into automatic shutdown. (nextbigfuture.com)
Water levels recovered quickly, and the shutdown was uncomplicated. (nuclearstreet.com)
On Sunday, literally tons of moon jellyfish ( Aurelia aurita ) flooded into the intake pipes of the Oskarshamn plant, clogging it completely and forcing the shutdown while they were cleared out. (popsci.com)

This is an artist's rendering of the proposed ground-based, small modular reactor nuclear power plant that would be located in Sakha Republic (Yakutia), Russia. (powermag.com)
Holtec is partnering with Kiewit Power Constructors, Framatome, Mitsubishi Electric Power Products, Western Services Corporation and INL to complete the early-stage research and power plant development work needed to demonstrate its advanced light-water small modular reactor. (energy.gov)

Part of the Yongbyon nuclear facility in a 1992 photo (epa) July 15, 2007 -- Moscow today welcomed as 'positive' North Korea's claim that it has shut down a nuclear reactor at the heart of international efforts to curb Pyongyang's atomic program, while U.S. officials offered cautiously hopeful appraisals. (rferl.org)
The North's KCNA news agency cited one of its spokespeople today as saying the reactor was shut down after Pyongyang received the first shipment of oil. (rferl.org)
Since the power plant had been shut down, it cannot produce any electricity by itself any more. (nextbigfuture.com)
[1] Load-following plants are typically in between base load and peaking power plants in efficiency, speed of start-up and shut-down, construction cost, cost of electricity and capacity factor . (wikipedia.org)
In countries with widespread air conditioning , demand peaks around the middle of the afternoon, so a typical peaking power plant may start up a couple of hours before this point and shut down a couple of hours after. (wikipedia.org)
According to the NRC, water in a steam generator then fell to a level actuating safety systems that shut down the reactor and started emergency feedwater pumps. (nuclearstreet.com)
Nuclear power plants can generate bountiful, carbon-free electricity, but their solid fuel is problematic, and aging reactors are being shut down. (businessinsider.com)
Today, they supply about 20% of America's energy, though by the 2040s, this share may drop to 10% as companies shut down decades-old reactors, according to a January 2017 report released by Idaho National Laboratory (INL). (businessinsider.com)
Fires at the building housing reactor No. 4, which was shut down at the time of the earthquake, raised a new set of concerns regarding spent nuclear fuel. (ieee.org)
During December 2016, the world's first Generation-III pressusrized water reactor (PWR)at Kudamkulam Nuclear Power Plant (KKNPP) in India will be shut down for its second refueling. (countercurrents.org)
An earthquake caused the reactors at the plant to shut down, automatically activating the emergency generators. (cnduk.org)
Why did the Ukrainians not shut this reactor down before now? (boisestatepublicradio.org)
BRUMFIEL: Well, they actually did shut down several other reactors at the site. (boisestatepublicradio.org)
And I think they really saw an opportunity here to shut down that last reactor safely while they were connected to external electricity. (boisestatepublicradio.org)
With Germany's decision to phase out nuclear energy, the nuclear power plant Unterweser was shut down. (mammoet.com)

Experimental Breeder Reactor-I, located 50 miles west of Idaho Falls on U.S. 20, will open for the 2023 season starting Friday, May 26, through Labor Day. (inl.gov)

The water heated in the reactor core becomes a supercritical fluid above the critical temperature of 374 °C, transitioning from a fluid more resembling liquid water to a fluid more resembling saturated steam (which can be used in a steam turbine), without going through the distinct phase transition of boiling. (wikipedia.org)
Peaking power plants include hydroelectric and gas turbine power plants. (wikipedia.org)
Many gas turbine power plants can be fueled with natural gas, fuel oil, and/or diesel , allowing greater flexibility in choice of operation- for example, while most gas turbine plants primarily burn natural gas, a supply of fuel oil and/or diesel is sometimes kept on hand in case the gas supply is interrupted. (wikipedia.org)
Load-following power plants can be hydroelectric power plants, diesel and gas engine power plants, combined cycle gas turbine power plants and steam turbine power plants that run on natural gas or heavy fuel oil , although heavy fuel oil plants make up a very small portion of the energy mix. (wikipedia.org)
A relatively efficient model of gas turbine that runs on natural gas can also make a decent load-following plant. (wikipedia.org)
Gas turbine power plants are the most flexible in terms of adjusting power level, but are also among the most expensive to operate. (wikipedia.org)
Therefore, they are generally used as "peaking" units at times of maximum power demand or Combined cycle or cogeneration power plants where turbine exhaust waste heat can be economically used to generate additional power and thermal energy for process or space heating. (wikipedia.org)
Tokyo Electric Power Company, the operator, said the elevated radiation levels in the water, which had flooded the turbine buildings adjacent to the reactors at the plant, were at least four times the permissible exposure levels for workers at the plant and 100,000 times more than water ordinarily found at a nuclear facility. (shakesville.com)
Notably, the BHEL-supplied Steam Turbine Generator set for Unit 1 (220 MW) of NPCIL's Kaiga Nuclear Power Plant in Karnataka created a world record of 962 days of continuous operation in December 2018, proving best-integrated performance of the Nuclear Reactor and Turbine System. (psuwatch.com)
YOKOHAMA, JAPAN (October 12, 2018) -Mitsubishi Hitachi Power Systems, Ltd. (MHPS) announces that the steam turbine generation facilities supplied for the Sanmen nuclear power plant in China have cleared all necessary functional, safety confirmation, and performance tests, with a signing ceremony held on October 11. (mhi.com)
MHPS assigned engineers on a long-term basis to conduct prior verification tests with the nuclear reactor and turbine sides, as well as confirmation tests on site. (mhi.com)
Electricity is created by using the heat generated in a nuclear reactor to produce steam and drive a turbine connected to a generator. (feministlawprofessors.com)
The radiation level at a pool of water in the turbine room of reactor two was measured recently at 1,000 millisieverts per hour. (distributedresearch.net)

The pressurized water reactor plant is currently supplying 60 megawatts to the Iranian power grid, but will produce a whopping 1, 000 megawatts when operating at full capacity, according to the International Atomic Energy Agency (IAEA). (youdao.com)
Construction of a third nuclear power reactor at Pakistan's Chashma site officially started on 28 May, according to the International Atomic Energy Agency (IAEA). (world-nuclear-news.org)
I mean, this is why the IAEA continues to describe the situation at the plant as precarious. (boisestatepublicradio.org)

The earthquake destroyed the external power supply of the nuclear reactor. (nextbigfuture.com)
As a result of the nuclear disaster in Fukushima, caused by the earthquake and subsequent tsunami that stuck Japan on 11 March 2011, the Federal Environment Ministry commissioned the Reactor Safety Commission (RSK) on 17 March 2011 with a safety review of the 17 German nuclear power plants. (bmuv.de)
Let's step back from the news cycle for a moment, though, and look at both how the Fukushima Dai-1 plant is supposed to work, and what went wrong following the earthquake on Friday March 11. (ieee.org)
At the time of the earthquake, three reactors were active and three were down for routine maintenance. (ieee.org)
But the tsunami which followed the earthquake flooded the rooms in which the emergency generator was housed, cutting power to the pumps which circulate cooling water to stop the reactors from over-heating. (cnduk.org)
The Great East Japan Earthquake, which occurred in Tohoku, Japan on 11 March 2011, was followed by a devastating tsunami and damage to nuclear power plants that resulted in radiation leakage. (who.int)

The entire reactor - the core, the cooling system, everything - is self-contained in this rocket-shaped steel cylinder. (wunc.org)

This preliminary Hazards Summary Report presents to the Atomic Energy Commission (AEC), Division of Licensing and Regulation, a description of the Nuclear Development Center, the characteristics of the proposed site, and an evaluation of the potential hazards associated with operating the test reactor at this location. (unt.edu)
The purpose of this document is to present criteria for the Titles I and II design of the Fast Flux Loop Facility which is to be a part of the Advanced Test Reactor. (unt.edu)

The data of annual releases from each commercial reactor in the world are reported by the United Nations' Scientific Committee on Atomic Radiation (UNSCEAR) periodically. (countercurrents.org)
Hermes will be the predecessor to Kairos Power's future 140 MWe commercial reactor and could be operational by 2026. (energy.gov)

The program goals are to monitor operations and collect data in order to ensure that the plant's operation is safe, to improve design and performance, to evaluate the performance and lifetime of the plant's components and systems, to evaluate plant safety and safeguards, and to disseminate all information to the scientific community. (unt.edu)
The plant's Ukrainian operators now say they have powered down the last working reactor. (boisestatepublicradio.org)

A load-following power plant , regarded as producing mid-merit or mid-priced electricity, is a power plant that adjusts its power output as demand for electricity fluctuates throughout the day. (wikipedia.org)
One of the most important factors for a particular plant is how efficiently it can convert fuel into electricity. (wikipedia.org)
The electricity supply of the German nuclear power plants is more robust throughout than at Fukushima I. All German plants have at least one additional assured incoming supply and more emergency power generators, with at least two of them protected against external impacts. (bmuv.de)
There are two pressurised water reactors at the Bushehr site, one of which is reportedly near completion and likely to be the first major Iranian reactor to begin generating electricity, possibly by mid-2008. (bbc.co.uk)
From Introduction: 'One part of this study, which is presented in this Monograph, consists of an analysis of electric energy usage and electric power demand data obtained from a sample group of occupied houses at Little Rock Air Force Base in Arkansas, equipped with heat pumps, water heaters, cooking ranges, clothes dryers, and miscellaneous appliances all operated by electricity. (unt.edu)
The reactor was completed in 1951, and on Dec. 20 of that year it became the first reactor to produce a usable amount of electricity from nuclear energy. (inl.gov)
suitable for use in a nuclear power plant Thermal power plant, primarily used for electricity generati. (euronuclear.org)
The second week showed signs of progress, as the plant operators worked to reconnect the plant to the electricity grid and get cooling systems working again. (ieee.org)
Fukushima Dai-1 uses six boiling water reactors to produce electricity for TEPCO. (ieee.org)
The energy from the fission reaction is used to boil water into steam, which drives turbines to produce electricity. (ieee.org)
All of them have the potential to compete globally once deployed and will offer consumers more access to a reliable, clean power source that can be depended on in the near-future to flexibly generate electricity, drive industrial processes and even provide potable drinking water to communities in water-scarce locations. (energy.gov)
Nuclear reactors use heat to make electricity. (boisestatepublicradio.org)

At 0315 MST on May 19, 2021, Unit 2 reactor automatically tripped during testing of the Plant Protection System. (nrc.gov)

Protect the seals from abrasive wear and prevent water ingression into the generator, maintain seal integrity, protect hydrogen purity, and minimize maintenance of the sealing system. (pall.com)
Immediately after reactor 1 had hydrogen explosion on 3/12/2011, the wind direction forecast of meteorological bureau was concealed. (fukushima-diary.com)
Digital Globe image of Fukishima #3 reactor, showing the roof collapsed following a hydrogen explosion at the overheated reactor. (defense-update.com)
But an earlier hydrogen explosion at the reactor may have damaged this. (distributedresearch.net)

Report concerning the efforts to make the sea water distillation process more economical by improving the heat transfer surface. (unt.edu)
Regardless if you want to do calculations for natural systems like lakes, forests, and wetlands, or if you're trying to do calculations for industrial processes like a waste water treatment plant, a chemical reactor or a distillation column, you will first need to write down mass balances for the system. (lu.se)

French company Areva has signed a contract to supply fuel assemblies for Vattenfall Nuclear Fuel's Ringhals 3 and 4 reactors from 2019. (power-technology.com)

in contrast to reactors which are mainly used for research purposes or to generate fissile material Any substance which can be fissioned by neutrons, during whi. (euronuclear.org)
In most of Fukushima Dai-1's reactors, the radioactive element uranium is the source of the nuclear fission reaction: when one atom of the uranium isotope U-235 breaks down into smaller parts, it produces both energy and neutrons. (ieee.org)
Activation products - radionuclides that result from the absorption of neutrons by uranium, and other materials present in a nuclear reactor. (cdc.gov)

It is the AP 1000 reactor , a pressurized water reactor , sold by Westinghouse Electric Co. (youdao.com)
The 1000 MW WWER reactor, a joint venture of Russia's Rosatom and the Nuclear Power Corporation of India Ltd (NPCIL) was grid connected three years ago. (countercurrents.org)

Although supercritical fossil fuel plants have much experience in the materials, it does not include the combination of high temperature environment and intense neutron radiation. (wikipedia.org)
The maximum allowed temperature of a fuel rod is 600 °C (1,112 °F). The light-water reactor also uses ordinary water to keep the reactor cooled. (feministlawprofessors.com)
Based on these results, limits on reactor operating power, pressure, and temperature during extended lifetime were defined to allow LWBR to achieve over 29,000 EFPH of satisfactory operation. (feministlawprofessors.com)
jellyfish have a natural "bloom" cycle triggered by changes in water temperature or other predators or, frankly, things we don't understand. (popsci.com)
The high-temperature gas reactor uses a different form of DOE's TRISO fuel that contains a uranium nitride fuel kernel for higher performance. (energy.gov)
Design concept of Kairos Power fluoride salt-cooled high-temperature reactor. (energy.gov)
Hermes is a key milestone in the company's rapid iterative development pathway to prove its fluoride salt-cooled high temperature reactor can ultimately deliver low-cost nuclear heat. (energy.gov)
Hence, an incubation temperature of 45°C is routinely used to isolate N fowleri from water samples, while suppressing growth of other amebae in the samples. (medscape.com)

When the valve failed, it caused the water level to drop in a deaerator storage tank, tripping feedwater pumps. (nuclearstreet.com)
Spinning fans and water pumps drown out the sounds of hissing steam. (wunc.org)
On Nov. 4, 2008, two divers were cleaning sludge and silt from an entry bay for water pumps that serve Constellation Energy Nuclear Group's Nine Mile Point nuclear power plant near Oswego, N.Y. (scientificamerican.com)
The force of the water flow, at 9,000 gallons a minute, severed a section of hose and sucked it into one of the system's pumps, fouling it. (scientificamerican.com)
Although these pumps did not provide cooling water directly to the reactor, they supported other essential equipment, and in this case, other pumps were working. (scientificamerican.com)
The pumps incident landed CENG on the NRC's carpet, leading to apologies by company executives and pledges to improve the safety culture at the plant, whose first unit started up 40 years ago. (scientificamerican.com)
The turbines and pumps and things on these reactors are designed to operate at much higher power outputs. (boisestatepublicradio.org)

The Russian company building the Bushehr plant, Atomstroiexport, said the delivery of the enriched uranium fuel began on Sunday. (bbc.co.uk)
President Bush said on Monday: "If the Iranians accept that uranium for a civilian nuclear power plant, then there's no need for them to learn how to enrich. (bbc.co.uk)
The light-water reactor (LWR), which is the most widely used variety for commercial power generation in the world, employs a fuel consisting of pellets of sintered uranium dioxide loaded into cladding tubes of zirconium alloy or some other advanced cladding material. (feministlawprofessors.com)
Refueling releases a huge radioactive emissions plume The reactor pressure vessel (RPV) in which heat is generated by the fission of uranium atoms is like a pressure cooker. (countercurrents.org)
Depleted uranium may also be produced in the reprocessing of spent nuclear reactor fuel. (who.int)
Ingestion could occur in large sections of the population if their drinking-water or food became contaminated with depleted uranium. (who.int)

This report explains the general approach to plant life management (PLiM), details and defines the relationship between nuclear power plant maintenance and PLiM, assembles a list of good practices and formulates guidelines for ageing management of critical structures, systems and components. (iaea.org)
The development of SCWR systems is considered a promising advancement for nuclear power plants because of its high thermal efficiency (~45 % vs. ~33 % for current LWRs) and simpler design. (wikipedia.org)
The super-heated steam cooled reactors operating at subcritical-pressure were experimented with in both Soviet Union and in the United States as early as the 1950s and 1960s such as Beloyarsk Nuclear Power Station, Pathfinder and Bonus of GE's Operation Sunrise program. (wikipedia.org)
In a LWR this can affect heat transfer and water flow, and the feedback can make the reactor power harder to predict and control. (wikipedia.org)
Supercritical water has excellent heat transfer properties allowing a high-power density, a small core, and a small containment structure. (wikipedia.org)
The 825-megawatt pressurized water reactor at Three Mile Island, about 10 miles outside Harrisburg, Pennsylvania, has been in service since 1974 and can power about 800, 000 homes. (youdao.com)
That is one of the most serious accidents for a nuclear power plant, and accordingly, a "plant black out" receives a lot of attention when designing backup systems. (nextbigfuture.com)
Then the Tsunami came, much bigger than people had expected when building the power plant (see above, factor 7). (nextbigfuture.com)
When the diesel generators were gone, the reactor operators switched to emergency battery power. (nextbigfuture.com)
Within the 8 hours, another power source had to be found and connected to the power plant. (nextbigfuture.com)
The external power generators could not be connected to the power plant (the plugs did not fit). (nextbigfuture.com)
Base load power plants are dispatchable plants that tend to operate at maximum output. (wikipedia.org)
[2] Power plants operated mostly in this way include coal , fuel oil , nuclear , geothermal , run-of-the-river hydroelectric , biomass and combined cycle natural gas plants. (wikipedia.org)
Peaking power plants operate only during times of peak demand. (wikipedia.org)
By way of contrast, load-following power plants usually run during the day and early evening, and are operated in direct response to changing demand for power supply. (wikipedia.org)
A region that has large variations in demand will require a large load following or peaking power plant capacity because base load power plants can only cover the capacity equal to that needed during times of lowest demand. (wikipedia.org)
Diesel and gas engine power plants can be used for base load to stand-by power production due to their high overall flexibility. (wikipedia.org)
Such power plants can be started rapidly to meet the grid demands. (wikipedia.org)
On 17 May 2011, Chairman of the RSK, Rudolf Wieland, presented the then Environment Minister Norbert Röttgen with the Commission's safety review of the German nuclear power plants. (bmuv.de)
10 -4 /a for earthquakes and 10 -5 /a for floods are taken into account throughout in the designs of German nuclear power plants. (bmuv.de)
The plant had reached 48 percent power when a condensate bypass valve failed to open, according to a report filed with the Nuclear Regulatory Commission. (nuclearstreet.com)
Are Mini-Reactors The Future Of Nuclear Power? (wunc.org)
They'll generate about one-tenth the power of a typical nuclear power plant. (wunc.org)
My feeling is that if you're going to have a nuclear power plant, it'd better be a Rolls Royce," he says. (wunc.org)
Nuclear power is a technology which is much more suited for large plants, centralized and isolated from populated areas in as small a number of places as possible," Lyman says. (wunc.org)
He says every nuclear power plant is a target for terrorism or is at risk during a disaster. (wunc.org)
It's a developing country that doesn't have a substantial electrical grid that is precisely the kind of country I would not want to see have any kind of nuclear power plant," he says. (wunc.org)
A sudden blockage of cooling water is one of the potential nightmares that nuclear power plant operators and regulators fear most. (scientificamerican.com)
As fears swelled over radiation from Japan's battered Fukushima Daiichi nuclear power plant in the days after the 11 March quake, computer-savvy individuals around the globe had an immediate reaction: show people the data. (shakesville.com)
High levels of radioactivity in water leaking from a reactor at the Fukushima Daiichi nuclear power plant resulted from a partial meltdown of fuel rods, Japanese officials have said, amid growing fears that radiation may also have seeped into seawater and soil. (shakesville.com)
Called a molten-salt reactor , the technology was conceived during the Cold War and forgoes solid nuclear fuel for a liquid one, which it can "burn" with far greater efficiency than any power technology in existence. (businessinsider.com)
The company has the capability to design, engineer, manufacture and supply, Primary side (Reactor Headers, End Shields, etc) as well as the Secondary side (Steam Turbines, Generators, Heat Exchangers, etc) equipment for Nuclear Power Plants. (psuwatch.com)
With the operation of 22 commercial Nuclear Power Plants in India, with a total installed capacity of 6,780 MWe, NPCIL is the sole Indian organization responsible for the design, construction, and operation of thermal nuclear power plants in India and has over 580 reactor years of safe operating experience. (psuwatch.com)
Vattenfall operates a four-unit nuclear power plant at the Ringhals site. (power-technology.com)
Report documenting the progress of the Army Gas-Cooled Reactor Systems Program to develop a mobile nuclear power plant for military field operation. (unt.edu)
Progress report for the Piqua Reactor Operations Analysis Program describing observations and analyses at the Piqua Nuclear Power Facility (PNPF). (unt.edu)
The RITM-200 is an integrated generation 3+ pressurized water reactor, developed by OKBM Afrikantov-a Russian nuclear engineering company-and designed to produce 55 MW of power. (powermag.com)
The RITM-200 improves upon the design of the KLT-40, a nuclear fission reactor used in earlier Russian icebreakers and floating nuclear power stations. (powermag.com)
Aysen Nikolayev, leader of the Sakha Republic, in December of last year said, "I am confident that the SMR nuclear power plant will provide impetus to the development of Yakutia's arctic regions and industries located in Ust-Yansky District, and improve standards of living of local residents. (powermag.com)
The Sanmen Nuclear Power Station is the world's first commercial 3rd Generation 1,250 megawatt class pressurized water reactor (AP1000). (mhi.com)
The Sanmen nuclear power plant was built by Sanmen Nuclear Power Co., Ltd. in Sanmen, Zhejiang Province, south of Shanghai. (mhi.com)
For decades, light-water nuclear power plants have provided safe, reliable. (inl.gov)
Salt Lake City, Utah/Genoa, Wisconsin - March 12, 2018 -EnergySolutions and Dairyland Power Cooperative executed an agreement for the decommissioning of the La Crosse Boiling Water Reactor (LACBWR) site located in Genoa, Wis. (energysolutions.com)
Dairyland retains ownership of the LACBWR site and operates the adjacent Genoa #3 coal-fired power plant. (energysolutions.com)
As a precaution, Dairyland Power Cooperative directed their employees working at the Genoa Site to switch to bottled drinking water instead of well water on March 6. (energysolutions.com)
In southeastern Sweden, the three reactors that make up the Oskarshamn nuclear power plant provide about a 10th of the nation's total power. (popsci.com)
Power reactors have a thermal output of up to 5,000 MW Megawatt, million times the power unit of watt (W). 1 MW = 1. (euronuclear.org)
The Chashma Nuclear Power Plant unit 3, also known as Chasnupp 3, is a 340 MWe pressurized water reactor (PWR) being constructed by China. (world-nuclear-news.org)
The eyes of the world have been riveted on Japan's Fukushima Dai-1 nuclear power plant and its workers' desperate efforts to stabilize the nuclear reactors. (ieee.org)
Operating nuclear power plants (NPPs) contain large volumes of radioactive gases at high pressures and temperatures. (countercurrents.org)
Over 60 epidemiological studies world-wide have examined cancer incidences in children near nuclear power plants (NPPs): most of them indicate leukemia increases. (countercurrents.org)
Digital Globe images showing damage to the water intake ports at the Fukushima nuclear power plant, caused by the earthquaqe and tsunami. (defense-update.com)
Kairos Power will work with ORNL, INL, the Electric Power Research Institute (EPRI) and the Materion Corp. to deploy Hermes, a low-power demonstration reactor in Oak Ridge, TN. (energy.gov)
Design concept of Holtec SMR-160 nuclear power plant. (energy.gov)
We're also following developments of the Zaporizhzhia nuclear power plant in southern Ukraine. (boisestatepublicradio.org)
INSKEEP: What does it mean to power down a reactor? (boisestatepublicradio.org)
And so they needed water moving through them and they kept losing power to the site. (boisestatepublicradio.org)
Basically, this is a cool trick where they can use the reactor at very low power to keep the lights on at the plant and keep water moving through its core and all the other cores as well. (boisestatepublicradio.org)
They've had trouble with the staff in the nearby town of Enerhodar, where they've had power and water and sewage problems. (boisestatepublicradio.org)
So on Sunday, they got power restored to the plant from the grid. (boisestatepublicradio.org)
And that's why the agency wants to have this permanent safe zone around the plant, to make sure that the power is secure. (boisestatepublicradio.org)
Now the once most efficient single-block nuclear power plant in the world is being decommissioned. (mammoet.com)
Thus, a pilot solution was needed that could be adapted to the other power plants within the fleet. (mammoet.com)
We are delighted that we were able to contribute to a safe project with our custom lifting solution and pave the way for another decommissioning project within the power plant fleet. (mammoet.com)
The radioactive core in a reactor at the crippled Fukushima nuclear power plant appears to have melted through the bottom of its containment vessel and on to a concrete floor, experts say, raising fears of a major release of radiation at the site. (distributedresearch.net)
In the light of the Fukushima crisis, Lahey said all countries with nuclear power stations should have "Swat teams" of nuclear reactor safety experts on standby to give swift advice to the authorities in times of emergency, with international groups co-ordinated by the International Atomic Energy Authority. (distributedresearch.net)
For normal operation of nuclear power plants (NPPs), liquid 14C effluents are significantly less than airborne releases. (lu.se)
Reactors at nuclear power plants were badly damaged and resulted in radiation leaking into the surrounding Fukushima Prefecture. (who.int)

The 15 megawatt thermal reactor utilizes TRISO fuel and a specialized heat pipe design to flexibly operate on a grid or in remote locations. (energy.gov)

Pall Diesel Filters effectively remove dirt, water, and other particulate contaminants that cause erosive wear, thermal degradation, and reduced efficiencies of generators. (pall.com)
A LWR type SCWR adopts water rods with thermal insulation and a CANDU type SCWR keeps water moderator in a Calandria tank. (wikipedia.org)
As a means of improving the gap-thermal conductance, a liquid metal (LM) is proposed as the gap-filling material replacing helium gas in the conventional light water reactor fuel rod. (feministlawprofessors.com)

Japan's troubled effort to contain the nuclear contamination crisis at its stricken Fukushima Daiichi plant suffered a setback on Sunday when alarmingly high radiation levels were discovered in a flooded area inside the complex, raising new questions about how and when recovery workers could resume their tasks. (shakesville.com)
The warning follows an analysis by a leading US expert of radiation levels at the plant. (distributedresearch.net)
The indications we have, from the reactor to radiation readings and the materials they are seeing, suggest that the core has melted through the bottom of the pressure vessel in unit two, and at least some of it is down on the floor of the drywell," Lahey said. (distributedresearch.net)
Naturally occurring sources of radiation are cosmic radiation from space or naturally occurring radioactive materials in our body or in soil, air, water, or building materials. (cdc.gov)
Man-made sources of radiation are found in consumer products, industrial equipment, atom bomb fallout, and to a smaller extent, from hospital waste and nuclear reactors. (cdc.gov)

It is also produced in nuclear reactors when water flows through the reactor during operation. (energysolutions.com)

But never in my wildest dreams did I suspect that a mere 6-8 months later we would see multiple nuclear reactor meltdowns with widespread contamination. (fukushima-diary.com)
In the third week, further discoveries of highly radioactive water outside the reactor buildings showed that the contamination was spreading. (ieee.org)
Jessica participated in CDC's emergency response efforts for the Flint Michigan water contamination the zika virus outbreak, and hurricanes Matthew, Harvey, Irma, and Maria. (cdc.gov)

The U.S. government is investing millions of dollars in what it considers a promising new industry for American manufacturing: nuclear reactors. (wunc.org)
The Obama administration considers the 104 U.S. reactors a cornerstone of the nation's long-term quest to reduce carbon dioxide emissions . (scientificamerican.com)

V.C. Summer's Westinghouse three-loop pressurized water reactor re-entered service May 31 following a scheduled refueling outage. (nuclearstreet.com)

Energy (DOE) Light Water Reactor Sustainability (LWRS) Program initiated an Industry Application Pilot Demonstration Project to support the development and deployment of the fuel discharge burnup extension and increased enrichment technologies that are capable of achieving economic improvements, as well as timely widespread adoption by the U.S. nuclear industry. (feministlawprofessors.com)

Both a LWR-type SCWR with a reactor pressure vessel and a CANDU-type SCWR with pressure tubes are being developed. (wikipedia.org)

At Fukushima, the drywell has been flooded with seawater, which will cool any molten fuel that escapes from the reactor and reduce the amount of radioactive gas released. (distributedresearch.net)

The supercritical water reactor (SCWR) is a concept Generation IV reactor, designed as a light water reactor (LWR) that operates at supercritical pressure (i.e. greater than 22.1 MPa). (wikipedia.org)

Thus, we aimed to investigate the prevalence of cigarette and water pipe smoking and their predictors among Iranian adolescents. (who.int)

A 2010 book includes conceptual design and analysis methods such as core design, plant system, plant dynamics and control, plant startup and stability, safety, fast reactor design etc. (wikipedia.org)

Lead test assemblies of the design have already been operating in Ringhals 3 plant since 2012 and they fully meet Vattenfall's requirements for safety and fuel quality. (power-technology.com)
This event is being reported as a reactor protection system and a specified system actuation in accordance with the reporting criteria of 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(3)(iv)(A). 'Following the reactor trip, all [Control Element Assemblies] CEAs inserted fully into the core. (nrc.gov)
About 56 used (spent) fuel assemblies will be removed from the reactor pressure vessel (RPV) and 56 fresh assemblies will be inserted. (countercurrents.org)

At Fukushima I, the design of the plants was inadequate for a tsunami with an occurrence frequency of approx. (bmuv.de)

The reason we are concerned is that they are detecting water outside the containment area that is highly radioactive and it can only have come from the reactor core," Lahey added. (distributedresearch.net)

The vertical tubes are the nuclear reactor chambers. (wunc.org)
Equipment, methods and typical results related to neutron radiography, of LWR fuel … The metal used for the tubes depends on the design of the reactor - stainless steel was used in the past, but most reactors now use a zirconium alloy. (feministlawprofessors.com)
In brief, a boiling-water reactor uses thousands of thin tubes full of fuel, commonly known as fuel rods, which contain the little pellets that feed the nuclear reaction. (popsci.com)

That means that you first build everything to withstand the worst catastrophe you can imagine, and then design the plant in such a way that it can still handle one system failure (that you thought could never happen) after the other. (nextbigfuture.com)
Taking existing knowledge regarding Fukushima into account, the RSK focussed particularly on the safety margins (degree of robustness) of each individual plant in the case of impacts beyond the design basis and beyond assumptions thus far. (bmuv.de)
A Cold War-era liquid-fueled reactor design could transform thorium - a radioactive waste from mining - into a practically limitless energy source. (businessinsider.com)
Under the terms of the agreement, new GAIA fuel design will be delivered by Areva for the reactors, which offer increased operational flexibility. (power-technology.com)
Vattenfall Nuclear Fuel's managing director Per-Olof Nestenborg said: "Vattenfall perceives GAIA to be a robust fuel design in combination with high-performance well suited for our PWR reactors. (power-technology.com)
The Yakutia SMR project is based on technology from Rosatom used in the design of the RITM-200 reactor that powers the icebreaker ships. (powermag.com)
Even before Chernobyl's RBMK reactor became the standard design of the Soviet Union, it was known to have inherent safety flaws but kept unchanged because it was "cheaper" that way. (ipsecinfo.org)
Design concept of BWXT Advanced Nuclear Reactor. (energy.gov)
Coverage includes membrane reactors and catalytic design (catalytic membrane reactors). (lu.se)

As more radioactive water spills , there are, quite obviously, increased concerns about the people living in temporary shelters. (shakesville.com)
But an accident that exposed three workers to radioactive water highlighted the continued danger, and made it clear that the process of stabilizing and cleaning up the plant will be a long slog. (ieee.org)

As the team tried to cope with that problem, a smaller piece of the unattended free end of the hose was pulled into a second water pump, according to an inspection report by the Nuclear Regulatory Commission . (scientificamerican.com)

This is analogous to the core in a nuclear plant where the fission reaction takes place," Lee says. (wunc.org)

It is an advantage in managing water chemistry and stress corrosion cracking of structural materials. (wikipedia.org)

Boiling water reactors (BWR) operate at even lower pressures, with the boiling process to generate the steam happening in the reactor core. (wikipedia.org)

On April 17, TEPCO finally announced a ' roadmap to restoration ,' which the company said would stabilize the plant and end most radioactive emissions within nine months. (ieee.org)
In response to a request from the Allied Industrial Workers of America International Union, an evaluation was conducted at Staley Company (SIC-2046), Decatur, Illinois to investigate emissions from the waste water treatment facility and exposures to asbestos (1332214). (cdc.gov)

NRC Chairman Gregory Jaczko said in November that while improving performance measures indicate that U.S. reactors are being operated safely, the industry must guard against 'distraction and complacency' in meeting safety and security goals. (scientificamerican.com)
The reactor pressure vessel was then moved back to its installation position and lowered onto the dismantling rack so that the contractor could safely cut off the calotte. (mammoet.com)

The last line of defense is putting everything into the third containment (see above), that will keep everything, whatever the mess, control rods in our out, core molten or not, inside the reactor. (nextbigfuture.com)
Results of the evaluations are, The cladding on light water reactor (LWR) fuel rods provides a stable enclosure for fuel pellets and serves as a first barrier against fission product release. (feministlawprofessors.com)
These rods are absurdly, dangerously hot, and so are kept submerged in cooling water. (popsci.com)
Water inside the pressure vessel keeps the fuel rods from overheating, and also creates the steam for the turbines. (ieee.org)
Workers have been pumping water into three reactors at the stricken plant in a desperate bid to keep the fuel rods from melting down, but the fuel is at least partially exposed in all the reactors. (distributedresearch.net)
At least part of the molten core, which includes melted fuel rods and zirconium alloy cladding, seemed to have sunk through the steel "lower head" of the pressure vessel around reactor two, Lahey said. (distributedresearch.net)

Well, seems like TEPCO doesn't know that the all the smoke coming from between the reactors is really, workers smoking crack and getting high! (fukushima-diary.com)
Readings from reactor two at the site have been made public by the Japanese authorities and Tepco, the utility that operates it. (distributedresearch.net)

A fast reactor core of the LWR type SCWR adopts tight fuel rod lattice as a high conversion LWR. (wikipedia.org)

Materials and water chemistry R&D should be done with the once-through characteristics in mind. (wikipedia.org)

In contrast, the well-established pressurized water reactors (PWR) have a primary cooling loop of liquid water at a subcritical pressure, transporting heat from the reactor core to a secondary cooling loop, where the steam for driving the turbines is produced in a boiler (called the steam generator). (wikipedia.org)
The Reactor Protection System actuated to trip the reactor on High Pressurizer Pressure, although no plant protection setpoints were exceeded. (nrc.gov)
The Unit 2 reactor tripped because of actual High Pressurizer Pressure that occurred as a result of a Main Steam Isolation Signal actuation. (nrc.gov)
Based on its high standards for quality and safety in engineering, Mammoet was tasked by contractor Höfer & Bechtel to lift the reactor pressure vessel with a weight of approx. (mammoet.com)
This allowed the reactor pressure vessel to be lifted and lowered vertically and also moved laterally. (mammoet.com)
First, the reactor pressure vessel was lifted from its installation position in the reactor pool. (mammoet.com)
The reactor pressure vessel was finally moved to the final dismantling position and lowered. (mammoet.com)
The removal of the reactor pressure vessel was a very demanding project. (mammoet.com)

The higher the safety margins that can be demonstrated against impacts on the plant regarding the fulfilment of the safety objectives, the higher the degree of robustness. (bmuv.de)
The safety objectives are the prevention of chain reactions, the cooling of the reactor core and fuel elements and confinement of radioactive substances. (bmuv.de)
Lyman says small reactors carry a host of safety, security, environmental and economic concerns. (wunc.org)
The incident did not create a safety threat to Nine Mile Point's No. 2 reactor, the NRC concluded. (scientificamerican.com)
As the plants age, the need for rigorous safety supervision steadily mounts, industry experts stress. (scientificamerican.com)
NRC Region I Administrator Samuel Collins said the annual meeting was not a formal inspection review but instead a more freewheeling conversation about how CENG was handling reactor safety across the three nuclear plants it operates with its new French partner, EDF. (scientificamerican.com)
The operators of the plant were indicted in 1983 by the US Department of Justice for destruction of safety data and criminal falsification. (cnduk.org)
Richard Lahey, who was head of safety research for boiling-water reactors at General Electric when the company installed the units at Fukushima, told the Guardian workers at the site appeared to have "lost the race" to save the reactor, but said there was no danger of a Chernobyl-style catastrophe. (distributedresearch.net)
The warning came as the Japanese authorities were being urged to give clearer advice to the public about the safety of food and drinking water contaminated with radioactive substances from Fukushima. (distributedresearch.net)

A less serious core meltdown happened at the Three Mile Island nuclear plant in Pennsylvania in 1979. (distributedresearch.net)

At the same time, water demand in the Region is growing fast and water availability is falling to crisis levels [1]. (who.int)

Across the U.S. nuclear energy sector, plant owners are seeking -- and gaining -- NRC approval to run first-generation plants for 20 years beyond the original license period. (scientificamerican.com)

Auxiliary Feedwater Actuation Signals (AFAS) 1 and 2 actuated on low Steam Generator water level post trip as designed. (nrc.gov)

Anatomy25

Organisms45

Diseases4

Chemicals and Drugs69

Analytical, Diagnostic and Therapeutic Techniques and Equipment28

Psychiatry and Psychology2

Phenomena and Processes59

Disciplines and Occupations7

Anthropology, Education, Sociology and Social Phenomena1

Technology, Industry, Agriculture19

Information Science4

Health Care36

Geographicals1

Modular reactors4

Light Water Re3

Coolant10

Tritium3

PHWR3

Shutdown4

Small modular reactor2

Shut15

20231

Turbine13

IAEA3

Earthquake6

Entire reactor1

Test reactor2

Commercial reactor2

Plant's2

Electricity12

20211

Hydrogen4

Distillation2

20191

Neutrons3

10002

Temperature8

Pumps7

Uranium6

Power68

Megawatt1

Thermal3

Radiation5

Produced in nuclear1

Contamination3

Considers2

Refueling outage1

LWRs1

CANDU1

Molten fuel1

Supercritical1

Iranian1

Startup1

Assemblies3

Tsunami1

Highly radioactive1

Tubes3

Design9

Radioactive water2

Pump1

Fission reaction1

Corrosion1

Operate1

Emissions2

Safely2

Rods6

Tepco2

Fuel rod1

Chemistry1

Pressure8

Safety9

Mile Island1

Crisis1

Nuclear energy1

Steam generator1