Sites with radioactive material more vulnerable as climate change increases wildfire, flood risks - Toronto Star

Sites with radioactive material more vulnerable as climate change increases wildfire, flood risks

As Texas wildfires burned toward the nation’s primary nuclear weapons facility, workers hurried to ensure nothing flammable was around buildings and storage areas.

When the fires showed no sign of slowing, Pantex Plant officials urgently called on local contractors, who arrived within minutes with bulldozers to dig trenches and enlarge fire breaks for the sprawling complex where nuclear weapons are assembled and disassembled and dangerous plutonium pits — hollow spheres that trigger nuclear warheads and bombs — are stored.

“The winds can pick up really (quickly) here and can move really fast,” said Jason Armstrong, the federal field office manager at Pantex, outside Amarillo, who was awake 40 hours straight monitoring the risks. Workers were sent home and the plant shut down when smoke began blanketing the site.

“I think we’re still early in recognizing climate change and ... how to deal with these extreme weather events,” said Paul Walker, program director at the environmental organization Green Cross International and a former staff member of the House Armed Services Committee. “I think it’s too early to assume that we’ve got all the worst-case scenarios resolved ... (because) what might have been safe 25 years ago probably is no longer safe.”

“We’re acting like ... (what’s) happening now is what we can expect to happen in 50 years,” said Caroline Reiser, a climate and energy attorney at the Natural Resources Defense Council. “The reality of what our climate is doing has shifted dramatically, and we need to shift our planning ... before we experience more and more of the extreme weather events.”

“We know that climate change makes it likely that these events will happen with increased frequency, and that brings the likelihood for unprecedented consequences,” Spaulding said. Sites “can be better protected if you are anticipating these problems ahead of time.”

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The agency said the plutonium likely was from surface soil blown by the wind during and after the fire, though site officials said radioactive waste is buried several feet deep or stored in concrete structures.

The state ordered demolition of 18 buildings, citing “imminent and substantial endangerment to people and the environment because unanticipated and increasingly likely fires could result in the release of radioactive and hazardous substances.”

The plan’s hypothetical fire “eerily matched the real fire,” Coghlan said, adding that it “could have been catastrophic,” if containers had been compromised and plutonium become airborne. But the lab had cut fire breaks around the area — and since then, most containers have been shipped to a permanent storage site in southern New Mexico.

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Wildfires aren’t the only climate-related risk. Flooding from increasingly intense rainstorms can wash away sediment — especially in areas that have burned. Floods and extreme cold also can affect operations and have forced the shutdown of several DOE sites in recent years.

Then in 2021, Pantex was shut down for a week because of extreme cold that officials said led to “freeze-related failures” at 10 nuclear facilities and other plants. That included failure of a sprinkler head in a radiation safety storage area’s fire suppression system.

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