Fears of Fission Rise at Stricken Japanese Plant
TOKYO — Nuclear workers at the crippled Fukushima power plant raced to inject boric acid into the plant’s No. 2 reactor early Wednesday after telltale radioactive elements were detected there, and the plant’s owner admitted for the first time that fuel deep inside three stricken reactors was probably continuing to experience bursts of fission.
Sure, it only merits page A17 in today’s New York Times, but the story is still a bombshell for the troubled nukes:
On Wednesday, the plant’s operator, the Tokyo Electric Power Company, said that gas from Reactor No. 2 indicated the presence of radioactive xenon and other substances that could be byproducts of nuclear fission. The presence of xenon 135 in particular, which has a half-life of just nine hours, seemed to indicate that fission took place very recently.
Trade Minister Yukuo Edano censured Japan’s nuclear regulator, the Nuclear and Industrial Safety Agency, for failing to report the discovery to the prime minister’s office for hours, according to local media reports.
The developments added to disquiet over how information related to the disaster has been handled. For almost two months after the March 11 earthquake and tsunami knocked out vital cooling systems, setting the stage for disaster, both company and government officials declared it was unlikely that any meltdowns had occurred. They finally conceded that melted fuel had likely breached containments in three reactors, and that it was likely pooled at the bottom of the vessels.
A 12-mile exclusion zone is still in effect around the plant. More than 80,000 households were displaced.
I should say upfront that cost, not safety, is the real problem with nuclear power as a climate solution today (see “Does Nuclear Have a Negative Learning Curve?” and “An introduction to nuclear power.”
But safety is a genuine concern. Here’s the “good news” on Fukushima’s fears of fission:









