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Out Of Mind » SOLAR & PLANETARY ALERTS & INFO » ATMOSPHERIC CHANGES » RT: Concerns on the rise as Hurricane Sandy expected to hit 26 nuclear power plants

RT: Concerns on the rise as Hurricane Sandy expected to hit 26 nuclear power plants

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PurpleSkyz

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RT: Concerns on the rise as Hurricane Sandy expected to hit 26 nuclear power plants





Posted on October 29, 2012


Published: 29 October, 2012, 19:46






Cape May Lighthouse can be seen as heavy surf
from Hurricane Sandy pounds the shoreline on October 29, 2012 (AFP Photo
/ Mark Wilson)




Millions of Americans are preparing to lose electricity as Hurricane
Sandy speeds up the East Coast, but downed power lines might be the
least of their worries: the projected path of the storm has Sandy
hitting as many as 26 nuclear plants.

More than two dozen nuclear facilities up and down the East Coast
could be ravaged by a storm expected to be of epic proportions this
week. Arnie Gundersen, the chief engineer of energy consulting company
Fairewinds Associates, warns in a recent podcast that even if engineers
at plants from North Carolina to New England say their plants have been
shut down and are safe from disaster, it may already be too late.

During a recording uploaded to the Fairewinds website on October 28,
the nuclear expert explains that facilities that are shut-down in
preparation of severe storms like Sandy could still contain dangerous
radioactive materials in their cooling pools for as long as two days.

“The plant can withstand relatively high winds, but the
transmission grid can’t — that’s all those transmission towers that are
all over the states,”
Gundersen says. “So what’s like to happen is that power lines will go down and the plant will suffer what will call loss of offsite power,” the same thing that happened at Fukushima, Japan.

Gundersen says that once offsite power is shut down, plants will
automatically halt its nuclear chain reaction process because that
energy will have nowhere to go. “The plant needs to drop its power
immediately because there is no wire at the other end to send it
anywhere if the offsite power is lost,”
he says.

“There’s 26 power plants in the East Coast that are in the area
where sandy is like to hit, and hopefully as the storm track becomes
better defined, the plants that are most subject to it — likely New
Jersey and Pennsylvania — preventively shut down,”
Gundersen says. Assuming those facilities preemptively put their nuclear plans on hold, he adds, “will of course minimize the impact: the jarring to the nuclear reactor and its safety systems.”

But even if plants are shut down, though, onsite power will need to
be pushed somewhere, which then raises an entirely independent question
of how to handle a surplus of radioactive, intense energy.

“When offsite power is lost, the plant is forced to dramatically
reduce power real quickly and then it still needs to be cooled,”
he says.

“You’ll hear in the next two days, ‘we’ve shut down the plant,’” he says,
“but what that means is they stopped the chain reaction. But what
Fukushima taught us was that that doesn’t stop the decay heat. There is
still as much as 5 percent of the power from the power plant that
doesn’t go away when the plant shuts down, and for that you need the
diesels to keep the plant cool,”
referring to the diesel-powered generators that will control the reservoirs.

“Some of these plants have two diesels, and some of these have
three diesels, and they are designed so that if one of these fails then
they can still get by,”
he says. “As the plant operator, as the
people running the plant, it’s a little bit of a nervous time to
realize that you’re on your last fall-back,”
he warns. “You just hope that’s your last fall-back.”

Even if pools can still be powered and cooled, that doesn’t mean that
a chance of a disaster is nil: according to a McClatchy report from
2011, the cooling pool used in the US contain much more nuclear material
on average than those in Japan.

Some facilities in the storm’s trajectory, such as the nation’s
oldest nuclear plant — Oyster Creek in Lacey, New Jersey — have already
pulled the plug for other reasons. In that case, routine maintenance has
already allowed the facility a few days to cool down and will likely
spare South Jersey from any otherwise imminent disaster. Across the East
Coast, though, other sites might still pose a risk.

Speaking to Bloomberg News, Nuclear Regulatory Commission spokesman Neil Sheehan says the agency is prepared to see “an impact to coastal and inland plants” and is planning on stationing inspectors at plants expected to be hit.
Thanks to: http://jhaines6.wordpress.com



  

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