英語 での Control rods の使用例とその 日本語 への翻訳
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A nuclear reactor is built in such a way that, when operating normally, you take out all the control rods.
During normal operation in a BWR, the control rods are used to maintain the chain reaction at a critical state.
The engineers decreased power by inserting graphite-tipped boron control rods into the core.
In early July, control rods will be removed to start up the reactor.
Hafnium's main purpose is to produce nuclear reactor control rods.
Swivels can be used with either 1/4" or 5/16" diameter control rods.
In order to control the nuclear chain reaction, the reactor operators use so-called"control rods".
In order to control the nuclear chain reaction, the reactor operators use control rods.
On February 6, the reactor lid was opened, and the following day, the lid was lifted without having first secured the control rods.
It is also synthesized upon neutron capture by samarium-149, which is added to the control rods of nuclear reactors.
In order to control the nuclear chain reaction, the reactor operators use so-called"control rods".
These"lead use" assemblies allow the performance of the control rods to be verified under operating circumstances.
Alongside its wide usage for control rods in chemical reactors, it is also used as a material for special heat-resistant alloys, high-speed cutting tools, optical fibers, automotive catalysts and more.
In the case of Hamaoka-4, for example, this means that 21 control rods have been fully inserted, reducing the power output by 400 MW to 700 MW 62.
It was assumed that hafnium control rods would be employed as neutron absorbers for extended periods of time, so SUS316L was chosen to replace SUS304, because it was believed to be less prone to stress corrosion cracking.
The control rods are also used to shut the reactor down from 100% power to about 7% power(residual or decay heat).
When the Great East Japan Earthquake struck, all of the nuclear power plants that registered the earthquake, including Fukushima Dai-Ichi, successfully completed their scrams and the control rods were inserted to their prescribed positions.
The last line of defense is putting everything into the third containment(see above), that will keep everything, whatever the mess, control rods in or out, core molten or not, inside the reactor.
Driving with broken brakes The Nuclear and Industrial Safety Agency(NISA) says that the damage is related to the degree of cumulative irradiation. On February 3rd it directed power companies operating BWRs to fully insert all hafnium blade type control rods for which the cumulative thermal neutron irradiation dose exceeds 4.0 x 1021neutrons/cm2, or is expected to exceed this level during the current operating period.
The fully-withdrawn control rods.