Region

Double-walled tank at Hanford may be leaking

An underground tank holding some of the worst radioactive waste at the nation’s most contaminated nuclear site might be leaking into the soil.

The U.S. Energy Department said workers at Washington state’s Hanford Nuclear Reservation detected higher radioactivity levels under tank AY-102 during a routine inspection Thursday.

Spokeswoman Lori Gamache said the department has notified Washington officials and is investigating the leak further. An engineering analysis team will conduct additional sampling and video inspection to determine the source of the contamination, she said.

State and federal officials have long said leaking tanks at Hanford do not pose an immediate threat to the environment or public health. The largest waterway in the Pacific Northwest — the Columbia River — is still at least 5 miles away and the closest communities are several miles downstream.

However, if this dangerous waste escapes the tank into the soil, it raises concerns about it traveling to the groundwater and someday potentially reaching the river.

Washington Gov. Jay Inslee said in a statement that the situation “must be treated with the utmost seriousness.”

Inslee said additional testing is expected to take several days.

“Our state experts confirm that there is no immediate public health threat. Given the relatively early detection of this potential leak, the river is not at immediate risk of contamination should it be determined that a leak has occurred outside the tank,” he said.

Tom Carpenter, executive director of the a Seattle-based advocacy group Hanford Challenge, said “his is really, really bad. They are going to pollute the ground and the groundwater with some of the nastiest stuff, and they don’t have a solution for it.” said

AY-102 is one of Hanford’s 28 tanks with two walls, which were installed years ago when single-shell tanks began leaking. Some of the worst liquid in those tanks was pumped into the sturdier double-shell tanks.

The tanks are now beyond their intended life span. The Energy Department announced last year that AY-102 was leaking between its two walls, but it said then that no waste had escaped.

Two radionuclides comprise much of the radioactivity in Hanford’s tanks: cesium-137 and strontium-90. Both take hundreds of years to decay, and exposure to either would increase a person’s risk of developing cancer.

At the height of World War II, the federal government created Hanford in the remote sagebrush of eastern Washington as part of a hush-hush project to build the atomic bomb. The site ultimately produced plutonium for the world’s first atomic blast and for one of two atomic bombs dropped on Japan, and it continued production through the Cold War.

Today, it is the nation’s most contaminated nuclear site, with cleanup expected to last decades. The effort — with a price tag of about $2 billion annually — has cost taxpayers $40 billion to date and is estimated will cost $115 billion more.

The most challenging task so far has been the removal of highly radioactive waste from the 177 aging, underground tanks and construction of a plant to treat that waste.

The Energy Department recently notified Washington and Oregon that it may miss two upcoming deadlines to empty some tanks and to complete a key part of the plant to handle some of the worst waste.

Energy Secretary Ernest Moniz visited the site Wednesday for the first time since being confirmed by the Senate in May. He said he intends to have a new plan by the end of the summer for resolving the technical problems with the waste treatment plant.



There are eight comments on this story »



Blogs


Complete interview with Gabe Marks

Our most recent story about prolific Washington State wide receiver Gabe Marks tells the story of a particularly insightful interview we had last spring. That story, "Gabe Marks is a ...


Weekend Wild Card — 7.23-24. 16

I'm facing another weekend of fence-building with my neighbor. Once we get the back fence built, I have one last honey-do item on the agenda and then it's kick back ...


You have 50 choices

S-R intern Tyson Bird brought cookies to work on his last day with us. It has been a pleasure to have him here. I first printed a column submission from ...



Saving for the future

sponsored According to two 2015 surveys, 62 percent of Americans do not have enough savings to handle an unexpected emergency, much less any long-term plans.



Sections


Profile

Contact the Spokesman

Main switchboard:
(509) 459-5000
Customer service:
(800) 338-8801
Newsroom:
(509) 459-5400
(800) 789-0029
Back to Spokesman Mobile