More on nuclear fission at Fukushima Daiichi
According to Bellona physicist and executive director, Nils Bøhmer, and Dr Komei Hosokawa, head of the Department of Environmental and Social Research at Japan’s Kyoto Seika University, Xenon-133 and Xenon 135 gas were detected in reactor No 2’s secondary containment.
The presence of these gasses indicated fresh nuclear fission taking place in the hot debris of the melted fuel rods at the bottom of the container, said Hosokawa and Bøhmer.
“This clear indication that a nuclear chain reaction is going on in one the reactors is a very bad sign. TEPCO had said that the situation would be stable within nine months after the accident,” said Bøhmer.
“Any on-going uncontrolled chain-reaction is not an indication of a stable rector, and we could face a much longer period of instability until the reactors are safe,” he said.
A TEPCO official has confirmed a so-called “partial re-criticality” incident in reactor No 2, said Hosokawa in the information he forwarded to Bellona. Hosokawa said the term “partial re-criticality was “a new vague word for [TEPCO’s} spin practice.”
http://www.bellona.org/articles/articles_2011/fission_fukushima
The presence of these gasses indicated fresh nuclear fission taking place in the hot debris of the melted fuel rods at the bottom of the container, said Hosokawa and Bøhmer.
“This clear indication that a nuclear chain reaction is going on in one the reactors is a very bad sign. TEPCO had said that the situation would be stable within nine months after the accident,” said Bøhmer.
“Any on-going uncontrolled chain-reaction is not an indication of a stable rector, and we could face a much longer period of instability until the reactors are safe,” he said.
A TEPCO official has confirmed a so-called “partial re-criticality” incident in reactor No 2, said Hosokawa in the information he forwarded to Bellona. Hosokawa said the term “partial re-criticality was “a new vague word for [TEPCO’s} spin practice.”
http://www.bellona.org/articles/articles_2011/fission_fukushima