Sentences with phrase «reactor vessel»

Long term waste disposal seems a major sticking point for a lot of people, leaving aside short term, insane choices such as storing spent fuel high in the air on top of reactor vessels so as to save plumbing and thus money.

When a chemist needs a novel reactor vessel for an experiment, Ramsey heads to his workshop and fires up his precision flamethrower.

One of the tasks of Duschl's team was to design a suitable reactor vessel containing numerous microfluidic channels, in collaboration with their partners in Israel.

The faulty bolts were discovered during an in - depth inspection of the Indian Point nuclear reactor vessel scheduled for once every decade.

The PRISM reactor vessel auxiliary cooling system can maintain reactor temperatures well below design limits using natural circulation to remove heat from the reactor module.

The PRISM reactor vessel auxiliary cooling system has the capability to maintain reactor temperatures well below design limits using natural circulation to remove heat from the reactor module.

It describes chaos and conflict between top officials of TEPCO and the emergency staff formed by then - prime minister Naoto Kan in the most critical phase of the crisis, while workers were battling to control a buildup of explosive hydrogen inside three reactor vessels whose fuel cores had become exposed.

For example, reactor vessel embrittlement [or loss of ductility] is a major issue.

The NuScale Power Module design is comprised of an integrated reactor vessel, steam generator, and containment vessel in a single cylindrical module.

Although Fukushima included explosive events attributed to the escape and ignition of hydrogen gas, the main reactor vessels were not breached to the extent that occurred in Chernobyl.

In a matter of days, venting of hydrogen from overpressurized reactor vessels led to large explosions at reactors 1, 2, and 3, which experienced full meltdown.

Start pumps to wash and rinse reactor vessels, to exhaust gases and vapors, to regulate the flow of oil, steam, air to towers, and to add products to converter or blending vessels.

The dome is the final structural component of Barakah 4's reactor containment building, which houses the nuclear reactor vessel, steam generators and other major components.

The steam explosion which ruptured the reactor vessel occurred some 2.7 seconds later.»

The NRC's Casto: CASTO: «Could you please explain your concern with the seawater on the reactor vessel?

In addition, it remains unclear how the hydrogen got from the sealed area containing the reactor vessel into the surrounding building — and then built up in sufficient quantities to explode.

Once the organic soup is heated and partially depolymerized in the reactor vessel, phase two begins.

Shrinking the reactor and putting its parts (such as the control rods that regulate the fission process) inside the reactor vessel, also reduces the need for redundant safety systems to deal with problems such as leaky pipes.

«Yeah, there's less concrete and, yeah, there's less steel in the reactor vessel,» says nuclear engineer Eric Loewen, chief consulting engineer at GE Hitachi Nuclear Energy, which is proposing a modular fast reactor to help the U.K. with its plutonium problem.

Then, as at Chernobyl, a sudden release of heat and steam can lift the top off the reactor vessel, rupturing all the pipes.

«Their goal is to keep everything stable and keep the radiation bottled up in the reactor vessel,» Golay says.

It needs to be: seven of these loops will be stacked on top of each other to form one of the many magnets that will confine and direct hydrogen plasma at up to 100 million °C in the reactor vessel.

A conventional plant requires a vast, complex array of pumps, pipes, and valves to move enormous quantities of water between the reactor vessel, a separate steam - generating chamber, and a cooling tank.

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.

Radiation levels are too high for an inspection, but the damage is thought to have been to a doughnut - shaped tank directly beneath the reactor vessel.

But if a core melts, it will slump to the bottom of the reactor vessel, probably melt through the reactor vessel onto the containment floor.

McGuire acknowledged the need for shielding against neutrons for the magnet coils positioned inside the reactor vessel.

«Conceptually, the reactor vessel could be replaced.

Sheron said — for example, the concrete supports for the reactor vessel that are subject to radiation exposure.

And Japan's Monju fast - breeder reactor — which would allow both full fuel recycling and use for power generation — has been closed for years due to fires and technical glitches, including a refueling machine stuck in the reactor vessel that has shut the experimental reactor down.

«The reactor vessel head could have failed between two and 14 months further out, that would have been a major loss - of - coolant accident,» says NRC spokesman Scott Burnell.

When a nuclear site applies for a license extension or for basically getting a new extension on the life of the reactor, they need to go through a very rigorous risk analysis of their reactor vessel and other hardware.

The fact that some of the isotopes are short - lived indicates that at least some of the radiation must have originated from breaches in the reactor vessels and not from the plant's overheated caches of spent fuel, he says.

The chemists built a detector with modified potato tissue supported in a reactor vessel containing a fluorescent marker.

Later, the power will be used to top up water in the reactor vessels.

The dome of the reactor building was put in place in July 2013 and the reactor vessel was installed in January 2014.

Major features of SMR - 160 include its small footprint (4.5 acres), minuscule site boundary dose, large inventory of coolant in the reactor vessel and its modularity — allowing project owners the freedom to effectively build the number of units to meet current and future demand.

NuScale's design incorporates seven layers of defense to prevent the release of contamination into the environment, including: 1) oxide fuel pellet and cladding; 2) reactor vessel; 3) containment vessel; 4) reactor pool; 5) underground stainless steel lined concrete pool walls and floor; 6) biological shield; and 7) a Seismic Category 1 building with HVAC filtration.

Inset shows more detail on the reactor vessel.

The slow up - flow of water in the reactor vessel insures that little radioactive crud produced from long term operation carries to the above - ground portion of the reactor coolant system.

The diagram also shows seismic shock - absorbers that protects the reactor vessel in the event of an earthquake.

The severe activation of metal is limited to the bottom 20 feet of the reactor vessel which lies deep underground encased by a thick concrete enclosure.

The reactor vessel is subject to cumulative neutron fluence in 120 years of operation that is less than that has been experienced by presently operating reactors.

The sodium then flows downward through one of the two intermediate heat exchangers (IHX) which is attached to, and suspended from, the top of the reactor vessel.

Response: The nuclear material in an SMR - 160 plant (both the reactor vessel and the fuel pool) is located deep in the ground.

Furthermore, no credible event has been identified that would uncover the nuclear fuel in the reactor vessel or the spent fuel pool.

Once the liquid sodium reaches the top of the reactor vessel, it is at its hottest.

The rotor operates as a reactor vessel like those used for organic syntheses in industry.

PRISM puts the used fuel from the core into the upper portion of the reactor vessel.