CX-270150: Replace Tank TK-5175 in Materials and Fuels Complex (MFC)-765 Truck Lock

The Fuel Conditioning Facility (FCF), building MFC-765, truck lock 3000-gallon industrial wastewater tank (TK-5175), located in the southwest corner of the truck lock, has degraded and there is potential for water seepage into the tank from water infiltration from the
surface. There is no evidence the tank leaks. Monthly inspections of the tank have occurred for the last year and a half, and the volume of wastewater in the tank has not fluctuated in that time. The tank is no longer fit for use and needs to be replaced. The tank collected industrial wastewater from air conditioning units, floor drains, utility sinks, etc. The tank has been taken out of service, and the industrial wastewater is collected in temporary drums and transferred to the Radioactive Liquid Waste Treatment Facility as needed. The industrial wastewater is potentially radioactively contaminated because sump water is collected in a Radioactive Buffer Area (RBA). The pump (P-5175) from the tank transfers the industrial wastewater from TK-5175 to the Radioactive Liquid Waste Treatment Facility (RLWTF). Manholes in the 6-inch concrete floor provide access to TK-5175. The proposed action would empty tank TK-5175, fill it with self-consolidating grout, and replace it with an above-ground 1000-gallon polyethylene water tank.