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A reactor vessel head for a pressurized water reactor. This structure is attached to the top of the reactor vessel body. It contains penetrations to allow the control rod driving mechanism to attach to the control rods in the fuel assembly. The coolant level measurement probe also enters the vessel through the reactor vessel head.
In 2012, a probe was opened regarding some fraudulently-certified parts installed in five OPR-1000 reactors over a ten-year period. [6] Hanbit-5 and -6, which had a greater number of fraudulent parts, were shut down until the parts could be replaced, and Hanbit-3 and -4 and Hanul-3 were allowed remain on-line pending parts replacement. [ 6 ]
1943 Reactor diagram using boron control rods. Control rods are inserted into the core of a nuclear reactor and adjusted in order to control the rate of the nuclear chain reaction and, thereby, the thermal power output of the reactor, the rate of steam production, and the electrical power output of the power station.
The reactor head under inspection. Unit One is an 879 MWe pressurized water reactor supplied by Babcock & Wilcox. The reactor was shut down from 2002 until early 2004 for safety repairs and upgrades. In 2012 the reactor supplied 7101.700 GWh of electricity. [14]
S2C reactor. USS Tullibee (SSN-597) S2G reactor. USS Seawolf (SSN-575) S2W reactor. USS Nautilus (SSN-571) S2Wa reactor. replacement reactor for USS Seawolf (SSN-575) S3G reactor. land-based prototype for USS Triton (SSN-586); located at Kesselring site; S3W reactor. USS Skate (SSN-578) USS Sargo (SSN-583) USS Halibut (SSGN-587) S4G reactor
This resulted in widespread load shedding in order to maintain the stability of the network. A replacement rotor for Unit 1 was shipped in from France and the unit was brought back into operation in May 2006. On 18 and 19 February 2007 large parts of the Western Cape again experienced blackouts due to a controlled shutdown of Koeberg.
The water-water energetic reactor (WWER), [1] or VVER (from Russian: водо-водяной энергетический реактор; transliterates as vodo-vodyanoi enyergeticheskiy reaktor; water-water power reactor) is a series of pressurized water reactor designs originally developed in the Soviet Union, and now Russia, by OKB Gidropress. [2]
The first commercial APR-1400 reactors at Shin Kori were approved in September 2007, [12] with construction starting in October 2008 (Unit 3) and August 2009 (Unit 4). [3] [13] [14] Shin Kori-3 was initially scheduled to commence operation by the end of 2013, but the schedules for both Units 3 & 4 were delayed by approximately one year to replace safety-related control cabling, which had ...