In older designs the assembly had 28 or 37 half-meter-long fuel tubes with 12 such assemblies lying end to end in a pressure tube.
12.
The U-shaped pressure tubes containing the fuel were thermally isolated from the hot fuel assembly by two circular thermal baffle tubes around the fuel assembly.
13.
In the 1980s, the pressure tubes in the Pickering A reactors were replaced ahead of design life due to unexpected deterioration caused by hydrogen embrittlement.
14.
Hyperloop One expects to achieve " first flight " of the complete system ( with levitation, propulsion, pod vehicle, control systems and low-pressure tube ) early in 2017.
15.
I got pressure tube rated at 150 psi so now I don't have to worry, I guess . talk ) 22 : 39, 5 January 2016 ( UTC)
16.
This allowed the pressure tubes to operate at low temperatures, essentially that of the moderator tank which was maintained about 155 degrees F and close to atmospheric pressure.
17.
The pressure tube surrounding the fuel channel split because of overheating and bowing of the burning fuel assembly, and the carbon dioxide coolant leaked out of the reactor.
18.
These features include pressure tube type design, low pressure moderator, on-power refueling, diverse fast acting shut-down systems, and availability of a large low temperature heat sink around the reactor core.
19.
But one day, a weld could fail in a " transition joint " that conducts cooling water into one of the 1, 693 pressure tubes where the uranium fuel is fissioning.
20.
The steering is power-assisted and the tubeless tires have a high-pressure tube inner tire which provides a built-in spare for each tube as well as eliminating rim leaks during high speed cornering.
