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LaSalle Station was recently awarded 1st prize at the 2019 Exelon Innovation Expo for a novel application using DEI’s DARVA^TM robotic vacuuming arm with AMFM-S300 regenerable filtration skid to clean the undervessel sump. Activity in the sump was contributing significantly to worker exposure during undervessel maintenance activities. In deploying the DARVA^TM system, activity was effectively removed from the sump, resulting in a 40% reduction in radiological exposure under the reactor vessel during the 2019 refueling outage.

Following the undervessel sump cleaning at LaSalle Station, the AMFM-S300 filtration skid was transferred to the refuel floor and backwashed to an AMFM-B500 filtration system. The backwashing operation reduced the dose rates on the AMFM-S300 filters by 98%, allowing this portable filtration system to be safely stored until its next use.

For more information on Exelon’s Innovation Expo, click here.