So now TEPCO is about to embark on a very dangerous operation they have known was necessary since the big tsunami—they have to move the spent fuel rods off-site. Moving fuel rods is a normal operation of a nuke, but the automated systems for this operation have been damaged so this must be done manually. There are 1500 rods that are both heavy and fragile. The money quote is “There is more radioactivity in that fuel pool than in all the bombs than in all the bombs that were fired in above ground testing. So we have the equivalent of 700 nuclear bombs worth of material in that fuel pool. These [the fuel rods] are not going to pull out easily and the fear is, is that they might snap and release the radiation that’s inside them.”
Keep in mind here that Fukushima is close enough to Tokyo and its 30 million inhabitants that even a slight mishap would put all those folks in an exclusion zone. TEPCO estimates this operation will take 18 months. And then the hard part begins—removing the damaged reactor cores.
Japan to begin removal of fuel rods from Fukushima plant
November 08, 2013
TEPCO is preparing to begin the dangerous task of extracting over 1,500 nuclear fuel rods from the Japan’s Fukushima nuclear plant. The risky operation is an essential step in to stabilize the site, in a process that could take decades.
Removing the spent fuel from a pool inside the Fukushima Daiichi plant’s fourth reactor presents significant risks given the radioactivity of the rods is 14,000 times more than what was released during the 1945 Hiroshima bombing. A slight mishap could release a huge amount of radiation into the atmosphere.
The removal of fuel is part of regular work at any nuclear power plant, but "conditions are different from normal because of the disaster," said company spokeswoman Mayumi Yoshida.
Tokyo Electric Power’s plan for the extraction of the rods was approved by the Japan Nuclear Energy Safety Organization Wednesday and will begin mid-November. Extraction was originally due to begin on Friday, but the Nuclear Energy Safety Organization called for more safety tests which set back the process.
The operation will entail lifting bundles of the 4-meter-long uranium and plutonium rods out of the storage pool where they were being kept when the earthquake-triggered tsunami struck Fukushima in 2011.
The rods will then be individually transferred into a water-filled cask and loaded onto a truck to be transported to a more secure site on the territory of the power station. TEPCO has assured that the 18-month process will go off without a hitch and that the necessary measures have been taken to ensure safety.
The company has reinforced the storage pool where the rods are being held with steel and concrete and claim that it can withstand an earthquake of the same magnitude as the one in 2011.
In addition, a steel shell has been constructed to block radiation leaks while the rods are being moved.
Unknown territory
Doubts have been raised over TEPCO’s initiative. Scientists have urged caution as such an operation has never been undertaken.
“Handling spent fuels involves huge risks," said Shunichi Tanaka, chairman of the Nuclear Regulation Authority. "It would be a disaster if radioactive materials come out of the metal rods during the work.”
"This is the first practical milestone for the project," said Hiroshi Miyano, a nuclear systems expert and visiting professor at Hosei University in Tokyo.
"Any trouble in this operation will considerably affect the timetable for the entire project," he said to AFP."This is an operation TEPCO cannot afford to bungle."
Christina Consolo, the founder and host of Nuked Radio, who has studied the Fukushima disaster in depth, told RT that she was not optimistic that the operation would be successful.
“The worst-case scenario is that there’s a nuclear chain reaction, a criticality in the pool during this procedure and it can’t be stopped,” she said.
Still, Consolo said Japan has no option but to proceed with the operation, as they can’t leave the fuel rods where they are, as “even a mild earthquake could cause the building to collapse.”
Kevin Kamps, a nuclear waste specialist from the organization Beyond Nuclear, believes it is “absurd”that TEPCO is in charge of this globally significant extraction operation, instead of delegating it to the“best and brightest nuclear engineers in the world.”
“If something goes wrong this could be a global catastrophe that dwarfs what has happened in Fukushima Daiichi thus far,” Kamps told RT. “Tokyo Electric has shown its true colors time and time again, its incompetence, its dishonesty, so it’s very frightening that TEPCO is in charge of this.”
Arnold Gunderson, a nuclear power expert, explained to RT that what they will attempt to do at Fukushima has never been done before but it has to be done, because it is too dangerous to keep the nuclear fuel “way up in the air” given the seismic problems facing the crippled plant.
“There is more radioactivity in that fuel pool than in all the bombs than in all the bombs that were fired in above ground testing. So we have the equivalent of 700 nuclear bombs worth of material in that fuel pool. These [the fuel rods] are not going to pull out easily and the fear is, is that they might snap and release the radiation that’s inside them,” he told RT.
If one of the rods were to be exposed to the air it would release radiation and heat up, potentially triggering a self-sustaining nuclear reaction. TEPCO has said that this is unlikely to occur.
TEPCO’s management of the crisis situation has been criticized as haphazard and ill-planned, with one Japanese minister likening it to a game of “whack-a-mole.” Currently the organization is battling to stop leaks of radioactive water from the tanks used to cool the reactors.
While the extraction of the fuel rods represents a significant challenge for TEPCO, the much more complex task of removing the misshapen cores of the stricken reactors awaits scientists. more
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