Tuesday, February 18, 2014

WIPP radiation alert

WIPP (Waste Isolation Pilot Plant), located in New Mexico, is an underground repository for transuranic nuclear waste, meant to be isolated deep underground for 10, 000 years.  On Friday, its radiation monitors went off.
  Officials checking the presence of airborne radiation at an underground site in southeastern New Mexico where the U.S. government seals away low-grade nuclear waste say surface tests have detected no contamination.
Samples were taken at several sites around the Waste Isolation Pilot Plant after an air monitor found radiation on the underground levels of the facility around 11:30 p.m. Friday, the U.S. Department of Energy said in a news release.
No workers were underground at the time and no injuries or damages have been reported. A fire at the site earlier this month prompted an evacuation.
“Monitors at the WIPP boundary have confirmed there is no danger to human health or the environment,” the department said late Saturday night. “No contamination has been found on any equipment, personnel, or facilities.”
The 139 workers aboveground at the site near Carlsbad were told Saturday to stay where they were as a precaution, Energy Department spokesman Roger Nelson said. None of them tested positive for contamination, and all non-essential personnel were released, Nelson said.
The surface samples show no contamination has been detected, implying the leak was “not significant,” he said.
Nelson said the cause of the leak was not yet known. The devices that continuously monitor the air underground reached a threshold level that automatically switches the ventilation system into a filtered mode. He couldn’t quantify the level it takes to trigger the monitors, but says they’re sensitive. He says the monitors have been triggered in the past by radon fluctuations.
Earlier this month, a truck caught fire at the facility, triggering an evacuation of workers. No radiation release was reported.

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