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There are no channel covers on the fuel channels of the reactor; the control rod drives are below the colored covers. 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.
On 11 October 1986, the Soviet Governmental Commission accepted a report entitled: "Conclusion on Reliability and Durability of a Covering Constructions and Radiation Safety of Chernobyl NPP Unit 4 Reactor Compartment". [6] [verification needed] The sarcophagus has over 60 bore holes to allow observation of the interior of the core. [7]
The test procedure was to be run again in 1986 and was scheduled to take place during a controlled power-down of reactor No. 4, which was preparatory to a planned maintenance outage. [22] [21]: 51 A test procedure had been written, but the authors were not aware of the unusual RBMK-1000 reactor behaviour under the planned operating conditions.
The construction of two partially completed reactors, No. 5 and 6, were suspended immediately after the accident at reactor No. 4, and eventually cancelled in 1989. [19] Reactors No. 1 and 3 continued to operate after the disaster. Reactor No. 2 was permanently shut down in 1991 after a fire broke out due to a faulty switch in a turbine.
English: RBMK-Core of Chernobyl-4: Positions of control rods (insertion depth in centimeters) approximately 1min30s before the explosion on Saturday, 26. April 1986, last signal of SKALA control system at 1:22:30 h. green: (167) control rods blue: (12) neutron detectors yellow: (32) shortened absorber rods inserted from below the reactor core
BWR-4 reactor pressure vessel (3293MWt, 1098MWe). RBMK-1000 reactor steel vessel, biological shields, and water tank (3200MWt, 1000MWe). AGR : Hinkley Point B reactor pressure vessel (1623MWt, 660MWe).
RBMKP-2400 / RBMK-1500 Cancelled Plan 2400 2400 / 1500 1986 1986 Kursk: 5 LWGR: RBMK-1000 Cancelled Construction 925 1000 1985 2012 [2] Kursk: 6 LWGR: RBMK-1000 Cancelled Construction 925 1000 1986 1993 [2] Smolensk: 4 LWGR: RBMK-1000 Cancelled Plan 925 1000 1993 Smolensk: 5 LWGR: RBMK-1500 Cancelled Plan 925 1000 1986 Smolensk: 6 LWGR: RBMK ...
The plant has four nuclear reactors of the RBMK-1000 type, Units 1 and 2 of which are first generation units similar to that of Kursk and Chernobyl units 1 and 2 and 3 and 4 are second generation similar to Chernobyl 3 and 4. Each unit has a separate reactor building but the turbine hall is shared between 2 reactors. [2] In 2008, construction ...