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13 were exposed to radiation at WIPP

The first load of nuclear waste arrives in this March 26, 1999 file photo, at the Waste Isolation Pilot Plant (WIPP) site in Carlsbad, N.M., from Los Alamos National Labs. (AP Photo/Thomas Herbert)
The first load of nuclear waste arrives in this March 26, 1999 file photo, at the Waste Isolation Pilot Plant (WIPP) site in Carlsbad, N.M., from Los Alamos National Labs. (AP Photo/Thomas Herbert)
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Officials say it is too soon to speculate about the health effects a radiation leak at the nation’s underground nuclear waste dump might have on workers.

The U.S. Department of Energy and the contractor that runs the Waste Isolation Pilot Project Wednesday confirmed that 13 workers who were above ground the night of the leak have tested positive for radiation exposure. And they say more workers are being tested.

They say more tests are needed to determine the levels of exposure, and they emphasized that all readings at the site have been at very low levels.

Bu watchdog Don Hancock of the Southwest Research and Information Center says the fact the workers were exposed at all raises questions about whether the site’s filtration system worked as well as officials have said.

“It is important to note that these are initial sample results,” the DOE and Nuclear Waste Partnership, the plant operator, said in a joint statement Wednesday. “These employees, both federal and contractor, will be asked to provide additional samples in order to fully determine the extent of any exposure.”

WIPP officials have said no employees were underground when a radiation detector went off late Feb. 14. And everyone at the plant when the leak occurred was checked for contamination before being allowed to leave, the news release said. But biological samples were also taken to check for possible exposure from inhaling radioactive particles.

Elevated radiation levels have been detected in the air around the plant, but officials have said the readings are too low to constitute a public health threat.

And they have said that all indications are that a HEPA filtration system designed to immediately kick in when radiation is detected and keep 99.7 percent of contamination from being released above ground worked flawlessly.

But watchdog Don Hancock, director of the Nuclear Waste Safety program at the Southwest Research and Information Center, said the fact that the workers were exposed raises questions about those claims.

“The WIPP systems right now are in the guinea pig stage,” he said. “We know in theory what they were designed to do but we don’t know how well they worked because they have never been tried.”

The accident is the first-known release of radiation since the dump near Carlsbad began taking plutonium-contaminated waste from the nation’s nuclear bomb building sites 15 years ago. It came just nine days after a truck hauling salt in the plant’s deep mines caught fire, but officials say they are confident the incidents are unrelated.

Officials said they can tell from their analyses of air samples in and around the plant that a container of waste leaked, but it could be weeks before they can get underground to find out what caused it. Possible scenarios include a ceiling collapse or a forklift puncturing a canister, Farok Sharif, president of the Nuclear Waste Partnership, said Monday before a community meeting in Carlsbad.

More than 250 people attended that forum, where Sharif and Joe Franco, the DOE site office manager, told sometimes skeptical residents that the elevated amounts of radiation that have been detected offer no more risk than a dental X-ray or an airline flight.

Still, Sen. Tom Udall, D-N.M., said he will send the Environmental Protection Agency a letter Thursday requesting that they bring portable air monitors to the area.

“The health and safety of the Carlsbad community and WIPP personnel are my top priority,” Udall said.

Hancock said officials also need to do extensive soil testing around the site.

New Mexico State University runs a monitoring center in Carlsbad that offers free radiation-detecting body scans. The director of the center said there has been a rise in appointments being scheduled since the leak.

WIPP is the nation’s first deep underground nuclear repository and the only facility in the country that can store plutonium-contaminated clothing and tools from Los Alamos National Laboratory and other federal nuclear sites.

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