How much sludge can be dumped into a radioactive storage tank before gas build-up causes an explosion of flammable gas? Hanford managers are grappling with that question, as they work against a clock to solve a new complication at the nuclear reservation. Workers are pumping radioactive sludge from single-hulled tanks into stronger new double-hulled tanks. Anna King, has details in a new report for our news partner OPB.

Rebecca Webb
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