Nuclear Power Reactors - World Nuclear Association
It involves a software program upgrade of the reactor control system which varies the plant's output between 50% and 100% of its put in capability with out intervention of the operator. Since 2008, Areva NP has installed the expertise at four German nuclear power items, Philippsburg 2, Isar 2, Brokdorf, and Grohnde, in addition to Goesgen in Switzerland.
In Russia these are often called VVER varieties - water-moderated and -cooled. A PWR has gas assemblies of 200-300 rods every, arranged vertically in the core, and a big Stainless Steel Electric Heating Reactor would have about 150-250 fuel assemblies with 80-100 tonnes of uranium. Water within the reactor core reaches about 325°C, therefore it have to be kept below about 150 instances atmospheric strain to prevent it boiling.
HTRE-2 was merely HTRE-1 modified to test superior reactor sections in a central hexagonal chamber. In this way new reactor designs could possibly be tested without the necessity to construct a totally new reactor from scratch. The expertise gained from HTRE-1 and HTRE-2 was used in the construction of HTRE-3. HTRE-three was the ultimate take a look at item designed to show the feasibility of producing an precise aircraft powerplant.