The illustration depicts the process of producing steam.
Overall, a gas cooled nuclear reactor is an essential engine to create steam.
In terms of the reactor, there are six technical details. First, fuel elements are loaded with eight charge tubes. Second, compared to eight charge tubes, there are eight borons to control rods. Third, a large frame, which is a base for other parts, is called concrete radiation shielding. Fourth, cool gas is contained with a pressure vessel. Fifth, there are four graphite moderators inside the pressure vessel. Finally, four uranium fuel elements are surrounded with the graphite moderators.
In terms of producing steam, water goes through a water circulator. Then, while a cool gas duct goes through a gas blower to the pressure vessel then becomes a hot gas duct, via a heat exchanger, the heat of water changes from cold to hot. Finally, steam is generated from a hot gas duct with hot water to the turbo-alternator.