A leak in a massive nuclear waste storage tank at the Hanford Site in Washington state has expanded significantly.
Thousands of gallons of radioactive waste leaked at the Manhattan Project-era storage tank over the weekend.
The expanded leak was first detected after an alarm went off at the Hanford Nuclear Reservation on Sunday.
On Monday workers were preparing to pump the waste out of the troubled area and try to determine why the leak became worse.
It’s unclear exactly how much waste spilled out, but estimates place the amount at somewhere between 3,000 and 3,500 gallons, according to the Tri-City Herald.
“There is no indication of waste leaking into the environment or risk to the public at this time,” the Washington Department of Ecology said in a statement.
The problem occurred at the double-wall storage tank AY-102, which has actually been leaking since 2011. At the time, the leak was extremely small, and the waste would dry up almost right after spilling out between the inner and outer walls, leaving a salt-like substance behind.
In March, the US Department of Energy began pumping what was left in the storage tank, which originally held some 800,000 gallons of waste. However, during this process – and after the alarms at Hanford went off – workers discovered that the leaked waste between the storage walls had reached a depth of 8.4 inches.
Pumping work on the tank has been halted as officials reevaluate the situation and figure out how to get to the leaked radioactive waste. It’s possible that the leak was made worse when the pumping began, but that has not been confirmed.
While the Department of Energy called the leak “anticipated” and the state Ecology Department said there was no danger to the public, the former Hanford worker who first discovered the leak had a different analysis.
“This is catastrophic,” Mike Geffre told King5 News. “This is probably the biggest event to ever happen in tank farm history. The double shell tanks were supposed to be the saviors of all saviors (to hold waste safely from people and the environment).”
After Geffre first discovered the leak, the government contractor managing the tanks, Washington River Protection Solutions, did not acknowledge the problem until 2012. The state has been pushing the federal government to remove the remaining waste since then, but work didn’t start on the project until last month.
According to the state Ecology Department, there are roughly 20,000 gallons of waste left inside the AY-102 tank.
“It makes me sad that they didn’t believe me that there was a problem in 2011,” said Geffre. “I wish they would have listened to me and reacted faster. Maybe none of this would be happening now. It’s an example of a culture at Hanford of ‘We don’t have problems here. We’re doing just fine.’ Which is a total lie.”
Fortunately, there has been no indication that waste has made its way into a leak detection pit outside of the tank itself, the Seattle Times reported.
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