Water Supply Vital To Avoiding Nightmare At Fukushima
Fukushima Power Plant
EMF Protection Devices
Magnetic Field Detector
October 02, 2011
In a nightmare scenario, fuel will melt at the Fukushima No.
1 nuclear power plant and large amounts of radioactive
materials will be released if the water supply to the
crippled reactors is halted for 38 hours, according to plant
operator Tokyo Electric Power Co.
But TEPCO officials said on Oct. 1 that it is only a
simulated worst-case scenario, saying that it is unlikely
that water being pumped into the No. 1 to No. 3 reactors
would be suspended for many hours.
The officials said TEPCO will be able to restart the water
supply within 30 minutes if it is stopped for any problem.
"Even if multiple problems occur, we will probably be able
to begin pumping in water in about three hours," an official
The water supply may stop when pumps break down, the power
supply is disrupted, tanks and other water sources are lost
or water supply routes are damaged, according to TEPCO.
Water temperatures in the No. 1 to No. 3 reactors, which
have fallen below 100 degrees, will rise by 48-51 degrees if
the water supply stops for one hour, according to TEPCO.
In 18 to 19 hours, the water temperatures will reach 1,200
degrees, at which time hydrogen will be generated and could
trigger an explosion, as occurred in some reactors in the
early stages of the crisis following the March 11 Great East
Japan Earthquake and tsunami.
In 38 to 50 hours, nuclear fuel will melt again, as it did
in three reactors at the crippled plant, and fuel
accumulated at the bottom of the pressure vessels will leak
into the outer containment vessels.
But TEPCO officials said it is unlikely that the water
supply would be suspended for many hours because there are
backup pumps and water can also be pumped in through many