These fission products are important to the operation of the reactor because some fission products contribute delayed neutrons that are useful for reactor control while others are neutron poisons that tend to inhibit the nuclear reaction.
42.
Unavoidable " in situ " production of this isotope is important in nuclear reactor control, as it decays to 135 Xe, the most powerful known neutron absorber, and the nuclide responsible for the so-called iodine pit phenomenon.
43.
This was done to prevent an over-rapid cool-down of the reactor . " Thresher " s Reactor Control Officer, Lieutenant Raymond McCoole, was not at his station in the maneuvering room, or indeed on the boat, during the fatal dive.
44.
The tube is part of the reactor control system; inside it there is a control rod, which operators can lower into the core to smother the flow of neutrons and stop the chain reaction, or raise to allow the reactor to run.
45.
Magog is finally directed to go to the complex's nuclear reactor control room and pull the safety rod out of the atomic pile, starting a chain reaction that will build to a nuclear explosion, which in turn will destroy the entire facility.
46.
On a nuclear-powered aircraft carrier, ETNs are sent to a nuclear training division where they train to qualify to operate the nuclear reactors of the ship in a similar way to NPTU for about six months prior to being sent to a reactor control division.
