Following a partial tunnel collapse in May at Hanford’s Plutonium Uranium Extraction Plant, a facility unused since the 1980s, a report from DOE and its contractor for the area, CH2M Hill Plateau Remediation Co., says a second facility tunnel, which once processed chemicals needed in nuclear production, does not meet current standards.
“We will work closely with [the Dept. of Ecology] to determine how best to stabilize Tunnel 2 and ensure the safe storage of the waste until it can be remediated,” says Doug Shoop, manager of the DOE Richland operations office.
Because it can moderate the damaging effects of earthquakes, base-isolation is a technique used primarily in seismically active regions. ENR takes a look at some of the largest applications of base-isolation technologies in the world.