Sentences with phrase «control rods»

Control rods are long, thin objects made of materials like boron or cadmium that help control the speed of a nuclear reaction in a nuclear reactor. By inserting or removing these rods, the level of nuclear fission can be adjusted, which ensures the reactor operates safely and efficiently. Full definition
They operate or control nuclear reactors, move control rods, start and stop equipment, monitor and adjust controls, record data in logs, and implement emergency procedures when needed.
These capabilities include critical heat flux testing, steam generator flow - induced vibration testing, and control rod assembly drop alignment testing, among others.
Green says that if this happened to a tube at Sizewell B, there would still be 52 other sets of control rods to shut the reactor down.
BUCHANAN, N.Y. (CBSNewYork / AP)-- One of the Indian Point nuclear power plant «s reactors was shut down Saturday after several control rods lost power, the plant owner said, marking the latest in a series of mishaps at the suburban New York plant this year.
When the reactor malfunctions or when operators need to shut off the reactor for any other reason technicians can remotely plunge control rods into the reactor core to soak up neutrons and shut down the nuclear reaction.
Officials said one of the Indian Point nuclear power plant's reactors in suburban New York was shut down Saturday because several control rods lost power.
The PRISM reactor design includes an Ultimate Shutdown System (USS), which can be manually actuated in the event that the reactor control rods can not be inserted into the core.
Control room operators safely shut down the Indian Point 2 reactor around 5:30 p.m., owner Entergy Corp. said in a statement, adding the reactor did what it's intended to do if control rods lose electricity.
The cadmium control rods made sure the process wouldn't continue indefinitely, because Fermi and his team could choose exactly how and where to insert them to control the chain reaction.
Nuclear reactors utilize control rods made from elements such as cadmium, boron or hafnium, all of which are efficient neutron absorbers.
The cooperation will initially include nuclear fuel development supported by GNF and control rod drive mechanisms designed by GEH and may later extend to other areas.
The physicists interspersed control rods through the uranium - graphite pile.
This is the case because even when fission is stopped by driving neutron - absorbing control rods into a reactor core, radioactivity still warms the fuel rods.
Though control rods have stopped the uranium fission process that drives normal operation of a nuclear reactor, the byproducts of that continue to split and generate heat.
Sixty - six computer - controlled rods filled with transmission fluid can each push with a force of 250 pounds against the mirror.
Reactors employing mixed oxide fuel may require extra control rods, made of boron or other neutron - absorbing materials, to slow down more fissile plutonium.
The suspect tubes carry the mechanism that lowers control rods into the core in an emergency.
There are control rods held suspended above the reactor core by electromagnets so that, if the electricity cuts out, they will fall down under their own weight into the reactor core and thereby shut the reactor down.
In order to shutdown the reactor quickly, the PRISM reactor includes control rods which can be inserted into the reactor core in order to absorb neutrons.
Annihilus also possesses the Cosmic Control Rod, which allows him to extend his life and augment his abilities.
We saw some weird shit, like a haptic armband that moves your fingers, an idol singer game you play with air traffic control rods, a surreal bathing simulator and a game where you grope a mannequin.
«It's not like they're positioning control rods in a nuclear reactor core.
While the concept of control rods is common to most nuclear reactors, the PRISM reactor also includes a notably unique shutdown feature.
As a safety mechanism, the cadmium control rods could quickly be inserted if something started going wrong, to shut down the chain reaction.
BUCHANAN, N.Y. — Officials say one of the Indian Point nuclear power plant's reactors in suburban New York has been shut down because several control rods lost power.
We prefer to leave the control rods safely in the reactor, but as much as we might like to domesticate the gospel, to make the faith about spiritual enlightenment or ethical ideals or the broad love of God that inspires tolerance, the fact of the matter is that the gospel is at root a rescue story.
On the day he died, along with 40 percent of the Hillary family, he had taken off in a plane with a control rod still locked in an aileron — effectively rendering the plane incapable of banking.
The reactor's designed to make a safe shutdown if the control rods lose electricity.
To make sure they could safely control the chain reaction, the team rigged together what they called «control rods
At every step of the process Fermi calculated the expected neutron emission, and slowly removed a control rod to confirm his expectations.
In case of an accident, multiple systems would keep cooling water flowing to the core, and control rods would quickly drop, automatically shutting down the nuclear reactions.
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.
Even after the control rods have done their job and arrested the fission reaction the fuel rods retain a great deal of heat.
Finally, Bergeron summed up the events so far: «Based on what we understand, the reactor has been shut down, in the sense that all of the control rods have been inserted — which means there's no longer a nuclear reaction.
When the control rods are inserted into the core, they absorb neutrons and stop the fission chain reaction.
Once the reactor's control rods are between sections of fuel rods, how is fission slowed to where it is controllable?
It seems the control rods aren't adequate to regain control of the fission.
«Excellent,» enthused the boy from Leicester as he withdrew the control rods from the reactor.
Ultimately, the safety of a nuclear power plant depends on the operation of its various safety systems, from cooling water to the control rods that modify or halt the nuclear reaction.
If something went wrong in the primitive reactor pile as the control rod was gradually removed, simply replacing it would have reversed the process.
Circular cracks had formed around several of these steel nozzles in the corroded lid that shield the control rods — 20 12 - inch -(30 - centimeter --RRB- long sticks made of a silver — indium — cadmium alloy that are used to dampen or shut down a nuclear reaction — rendering them vulnerable to simply popping off.
In a report published last week, Greenpeace says the cracks could lead to a malfunction of the control rods.
Control rods will drop down into the reactor core if necessary to stop the nuclear fission chain reaction directly (see also Question 6).
As shown in the diagram, the control rods include an absorber bundle which is designed to shutdown the reactor in one - fifth of a second.
With the help of the moderators and the control rods natural Uranium - 235 can be used for industrial purposes.
Control rods are made from elements like Boron and Cadmium which are able to absorb the excess Alpha particles without undergoing fission themselves.
Sometimes, control rods are also used for slowing down the whole process in nuclear reactors.
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