posted on Mar, 16 2011 @ 05:02 PM
Tokyo (CNN) -- Spent fuel rods in Unit 4 of Japan's stricken Fukushima Daiichi nuclear plant have been exposed, resulting in the emission of
"extremely high" levels of radiation, the head of the U.S. Nuclear Regulatory Commission said Wednesday.
"What we believe at this time is that there has been a hydrogen explosion in this unit due to an uncovering of the fuel in the fuel pool," Gregory
Jaczko told a House energy and commerce subcommittee hearing. "We believe that secondary containment has been destroyed and there is no water in the
spent fuel pool, and we believe that radiation levels are extremely high, which could possibly impact the ability to take corrective measures."
The water served to both cool the uranium fuel and shield it. But once the uranium fuel was no longer covered by water, its zirconium cladding that
encases the fuel rods heated, generating hydrogen, said Robert Alvarez, senior scholar at the Institute for Policy Studies and a former official with
the Department of Energy.
That caught fire, resulting in a situation that is "very, very serious," he told CNN. He said the next solution may involve nuclear
plant workers having to take heroic acts. Asked to be more specific, he said, "This is a situation where people may be called in to sacrifice their
lives. ... It's very difficult for me to contemplate that but it's, it may have reached that point."
The article may have been referenced before, but that one section is shocking.
edit on 16-3-2011 by dbriefed because: (no reason