Interview – Marco Kaltofen – Airborne Radiation Spread
TEPCO: hydrogen from reactor caused blast
The operator of the Fukushima Daiichi nuclear plant says the explosion of the facility’s Number 4 reactor on March 15th was caused by a backflow of hydrogen from an adjacent building.
The Tokyo Electric Power Company, or TEPCO, announced the finding on Thursday.
The blast was initially thought to have been caused by hydrogen created when spent fuel stored in a pool at the reactor building was damaged by the devastating March 11th quake.
TEPCO workers who entered the building on Tuesday to determine the cause found that the 5th floor was more severely damaged than the 4th, where a pool of spent fuel is located, and that the fuel was intact.
The workers also confirmed that an air conditioning duct on the floor was severely damaged.
TEPCO says the hydrogen likely flowed into the reactor through the duct connected to the plant’s Number 3 reactor when workers released pressurized air from it to prevent a hydrogen blast.
The firm says the explosion very likely occurred after the density of hydrogen in the duct increased.
A hydrogen blast took place at the Number 3 building a day before the explosion at the Number 4 building.
Thursday, November 10, 2011 17:24 +0900 (JST)
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Leakage from spent fuel pool of reactor 4
Tepco announced that water purifying system leaked liquid at spent fuel pool of reactor 4.
It happened on 11/8/2011.
No announcement about the radiation level or leaked nuclide etc..
The system is to take off the salt from water.
It happened in the high pressure pump part of the water purifying system.
A journalist of Shukan Asahi, Mr.Imanishi was invited to go into the site by an actual Fukushima worker.
The Tepco worker had sanity enough to think Tepco and the government should reveal the truth because it is the world wide / historical industrial disaster.
He wanted the journalist to report what is actually going on in the plant.
From his report, the spent fuel pool of reactor 4 is completely “exposed”.
The wall and the ceiling of the building was completely blown off by “some explosion”.
The spent fuel pool is totally left outside, out of control so what you can even see it from out of the reactor.
He states, the wall of the reactors are about 1m thick of huge concrete mass.
It is blown off. It shows how much the explosion(s)were more massive that they were announced by the government.
He also states, he heard ambulance comes to the plant at least for 10 times a day.
When he comes back to Tokyo, he loses the sense of reality.
Though he saw the massive debris of the Fukushima plants, but people live normally as if nothing happened in Tokyo.
He even doubt if he saw dream in Fukushima, but it is true, and life in Tokyo is fake.
From what he observed, pipes and facilities are made of vinyl.
The leakage of today may happen very often.