In reactors of the design used at Fukushima, the nuclear chain reaction is normally stopped when the operator gives a command to insert control rods, which rise up from the bottom of the core and separate the fuel assemblies.
In reactors of the design used at Fukushima, that chain reaction is normally stopped when the operator gives a command to insert control rods, which rise up from the bottom of the core and separate the fuel assemblies.
Science answers: A reactor is shut down by inserting control rods between the fuel rods.
In order to achieve a rapid shutdown, it is required to insert control rods as fast as possible.
Engineers began the process of shutting down the final Tomari reactor, inserting control rods to bring the fission process to an end.
Following the earthquake, automatic systems shut down those reactors that were still operating, inserting control upward from below the core in a boiling water reactor.
At runtime, those inserted hooks control apps' access to sensors depending on various control policies.
To support larger systems in a scalable way, more than one CU can be inserted and controlled with the same control vector.
They inserted the control rods — graphite-tipped cylinders of boron carbide that slow or stop a nuclear reaction — too far into the reactor.
After the screw was inserted, a control radiograph was taken to exclude misplacement.
