The peril of MOX nuclear fuel in Fukushima reactor 4’s cooling pond

The un-irradiated rods inside the Unit 4 spent-fuel pool are, in all probability, made of a new type of MOX fuel containing highly enriched plutonium. 

Why TEPCO is Risking the Removal of Fukushima Fuel Rods. The Dangers of Uncontrolled Global Nuclear Radiation, Global Research, 24 Nov 13  By Yoichi Shimatsu 

“…….Mystery of MOX super-fuel  A Mainichi Shimbun editorial mentions in passing that the Reactor 4 pool contains 202 fresh fuel assemblies.(3) The presence of new fuel rods was confirmed in the TEPCO press release, which described the first assembly lifted into the transfer cask as an “un-irradiated fuel rod.” Why were new rods being stored inside a spent-fuel pool, which is designed to hold expended rods? What threat of criticality do these fresh rods pose if the steel frame collapses or if crane operators drop one by accident onto other assemblies, as opposed to a spent rod?

Against the official silence and disinformation, a few whistleblowers have come forward with clues to answer these questions. Former GE nuclear worker Kei Sugaoka disclosed in a video interview that a joint team from Hitachi and General Electric was inside Reactor 4 at the time of the March 11, 2011 earthquake. By that fateful afternoon, the GE contractors were finishing the job of installing a new shroud, the heat-resistant metal shield lining the reactor interior.(4)

TEPCO inadvertently admitted to the presence of foreign contractors at Fukushima No.1 up until March 12, 2012, when the management ordered their evacuation in event of a massive explosion during the rapid meltdown of Reactor 2. So far, leaks indicate the presence of the GE team and of a Israeli nuclear security team with Magna BSP, a company based in Dimona.(5)

Another break came in April 2012, when a Japanese humor magazine published a brief interview of a Fukushima worker who disclosed that radioactive pieces of a broken shroud were left inside a device-storage pool at rooftop level behind the Reactor 4 spent-fuel pool.(6) This undoubtedly is the used shroud removed by the GE-H workers in February-March 2011.

A curious point here is that the previous shroud had been in use for only 15 months. Why would TEPCO and the Japanese government expend an enormous sum on a new lining when the existing one was still good for many years of service?

Obviously, the installation of a new shroud was not a mere replacement of a worn predecessor. It was an upgrade. The refit of Reactor 4 was, therefore, similar to the 2010 conversion of Reactor 3 to pluthermal or MOX fuel. The same model of GE Mark 1 reactor was being revamped to burn MOX fuel (mixed oxide of uranium and plutonium).

The un-irradiated rods inside the Unit 4 spent-fuel pool are, in all probability, made of a new type of MOX fuel containing highly enriched plutonium. If the frame collapses, triggering fire or explosion inside the spent-fuel pool, the plutonium would pulse powerful neutron bursts that may well possibly ignite distant nuclear power plants, starting with the Fukushima No.2 plant, 10 kilometers to the south…..

The upgrade of the Reactor 4 shroud may well have involved the test-fitting of some MOX rods, which abandoned on the floor next to the reactor when the tsunami reached shore. In other words, in early March 2011 crane operators completely filled  space inside the spent-fuel pool with new MOX rods and then simply left casks of assemblies on the roof and lowered more into the basement. That is the simplest explanation for the damage to the structural integrity of the reactor building. GE is not about to disclose its role in this disaster……….…..


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