Electrodes are being installed in a key safety system, the off-gas treatment system, for the Hanford vitrification plant’s Low Activity Waste Facility.
The facility will have two electrostatic precipitators to remove contaminants from exhaust as radioactive waste and glass forming material are melted together.
Each precipitator has 123 collector tubes with a seven-foot electrode running down the center of each. The inside of the collector tubes will be statically charged, attracting particulates from the humid off-gas.
The collector tubes will be cleaned periodically using a flushed-water system.
Once all the electrodes are in the collector tubes, the equipment will be installed in the precipitator vessels, likely in the coming fall. Each vessel is about 21 feet tall by 10 feet in diameter.
The Hanford vitrification plant is being built by Bechtel National for the Department of Energy to turn up to 56 million gallons of high level and low activity radioactive waste into a stable glass form for disposal. The waste is left from the past production of plutonium for the nation’s nuclear weapons program.