This potential still needed to be confirmed, and previous tests had ended unsuccessfully.
PRESSING EITHER RED BUTTON MEME FULL
Analysis indicated that this residual momentum and steam pressure might be sufficient to run the coolant pumps for 45 seconds, bridging the gap between an external power failure and full power from the emergency generators. To solve this one-minute gap, considered an unacceptable safety risk, it had been theorised that rotational energy from the steam turbine (as it wound down under residual steam pressure) could be used to generate the electrical power required. The Chernobyl reactors used water as a coolant with reactor 4 fitted with 1,600 individual fuel channels each requiring a coolant flow of 28,000 litres per hour.Īs the cooling pumps require electricity to cool the reactor, in the event of a power failure, Chernobyl’s reactors had three backup diesel generators these would start up in 15 seconds, but took 60–75 seconds to attain full speed and reach the 5.5‑megawatt output required to run the main pump. RBMK reactors, like those in use at Chernobyl, following an emergency shutdown will continue to emit 7 % of their thermal output and therefore must continue to be cooled.
The testĪn inactive nuclear reactor continues to generate a significant amount of residual heat. The test was incorporated into a scheduled shutdown of reactor 4. The accident occurred during an experiment to test a way of cooling the core of the reactor in an emergency situation.
0 kommentar(er)
