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RBMK reactor with fuel channel covers. The top of the reactor is covered by the upper biological shield (UBS), also called "Schema E", or, after the explosion (of Chernobyl Reactor 4), Elena. The UBS is a cylindrical disc of 3 m × 17 m in size and 2000 tons in weight. [14] It is penetrated by standpipes for fuel and control channel assemblies ...
A mid-life major overhaul including a complete replacement of critical parts such as fuel and control rod channels was thought necessary after that. [16] Since RBMK reactors specified a major replacement programme at 35 years designers originally decided this needed to happen in the VVER type as well, although they are of more robust design ...
Fuel can be changed while the reactor is in operation (online refueling), improving grid and fuel efficiency. [3] Vertical injectors promote a natural convective flow of the light water primary circuit fluid through inlined [check spelling] channels in the reactor core. Graphite blocks in the reactor core serve as a neutron moderator. [4]
The three sites (Kursk I, Leningrad I, Smolensk I) which all consist of 3+ RBMK reactors are going to be replaced with VVER-1200 units at Leningrad and VVER-TOI units at Smolensk (2 units are already in pre-construction phase with planned completion in 2033 - each rated at 1250 MW per unit - out of a total of 4 units announced) [12] and Kursk ...
Chernobyl Reactors 5 and 6 are unbuilt reactors, a part of Chernobyl Nuclear Power Plant's third generation phase. Intended as RBMK-1000 units capable of approximately 1,000 megawatts each, construction began on 1 July 1981 and was partially completed by the time of the Chernobyl disaster on 26 April 1986.
RBMK reactor fuel was used in Soviet-designed and built RBMK-type reactors. This is a low-enriched uranium oxide fuel. The fuel elements in an RBMK are 3 m long each, and two of these sit back-to-back on each fuel channel, pressure tube. Reprocessed uranium from Russian VVER reactor spent fuel is used to fabricate RBMK fuel.
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The Ignalina Nuclear Power Plant contained two Soviet-designed RBMK-1500 water-cooled graphite-moderated channel-type power reactors. After the Chernobyl disaster of April 1986, the reactor was de-rated to 1,360 MW. Each unit of the power plant was equipped with two K-750-65/3000 turbines with 800 MW generators built by the Kharkiv turbine ...