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In a reactor core isolation cooling system ("RCIC"), an isolation condenser (IC or iso. condenser; ... During the accident at the Fukushima nuclear plant in 2011, the ...
To cool the reactor, operators resorted to the plant's Emergency core-cooling systems (ECCS), including the isolation condensers, and the High Pressure Coolant Injection systems (HPCI). According to NHK, the isolation condenser system had not been activated in the previous 40 years, and no one present had ever witnessed its operation. [19]
The isolation condenser (IC) was functioning prior to the tsunami, but the DC-operated control valve outside of the primary containment had been in the closed position at the time to prevent thermal stresses on the reactor components. Some indications in the control room stopped functioning and operators correctly assumed loss of coolant (LOC).
The 9.0 magnitude quake and tsunami that ravaged parts of Japan’s northeastern coast on March 11, 2011 killed about 20,000 people and drove thousands from their homes in the prefectures of ...
While operators attempted to pump water from the turbine hall basement to the condenser, both of condensers turned out to be full. [43] [44] [45] Pumps were installed which moved up to 25 tons of condensed water per hour into on site storage tanks. This in turn freed up the needed storage condenser space for water in Unit 2's basement. [45]
Only the steam-powered pump systems (isolation condenser in reactor 1, high-pressure coolant injection and reactor core isolation cooling system in reactors 2 and 3) remained available. Later, as the temperature rose, a system started that used steam-powered pumps [failed verification] and battery-powered valves. [9] [10]
Hundreds of people marched in South Korea’s capital on Saturday demanding Japan scrap its plans to release treated wastewater from the damaged Fukushima nuclear power plant, as the head of the U ...
Fukushima report: Key points in nuclear disaster report - An outline of key quotes, findings and recommendations from the 88-page executive summary of the Nuclear Accident Independent Investigation Commission's report, as provided by the BBC, 5 July 2012; Webcam Fukushima nuclear power plant I, Unit 1 through Unit 4