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Collapse of nuclear waste storage tunnel at Hanford

Tunnel collapses at Hanford; no radiation released, officials say http://www.king5.com/news/local/hanford/tunnel-collapses-at-hanford-no-radiation-released-officials-say/438227872  Hundreds of workers were told to take cover at the Hanford Nuclear Reservation after a tunnel full of highly contaminated materials collapsed Tuesday morning. But officials say no radiation was released and no workers were hurt.Officials say a collapsed patch of ground above the tunnel was larger than first believed. The U.S. Department of Energy said the collapse covered about 400 square feet (37.1 square meters) instead of the 16 square feet (1.4 square meters) first reported.

Nuclear waste storage tunnel caves-in at Hanford

Hundreds of workers were told to go into a “take cover” position after the tunnel in a plutonium uranium extraction (PUREX) plant collapsed.

The agency says the rail tunnels are hundreds of feet long, with about eight feet (2.4 meters) of soil covering them. The U.S. Department of Energy says the incident caused the soil above the tunnel to sink between 2 and 4 feet (half to 1.2 meters).

“I would underscore this is confined to a small area of the Hanford site,” Destry Henderson, deputy news manager for the Hanford Joint Information Center, told NBC News. “The facility does have radiological contamination right now but there is no indication of a radiological release,” Henderson said.

A manager sent a message to all personnel telling them to “secure ventilation in your building” and “refrain from eating or drinking.”

A source said “take cover” status was expanded to the entire site at 10:35 a.m. The source also said that crews doing road work nearby may have created enough vibration to cause the collapse, and that Vit Plant employees were in cover mode as well.

May 10, 2017 - Posted by | incidents, USA

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