CommTank provided an oil tank replacement service which included the removal of a steel oil tank and the installation of a 275-gallon Roth™ double-wall aboveground storage tank at this residence in Windham, NH. Here are the steps taken to replace the oil tank: Heating Oil Tank Removal. Cut the tank using a nibbler. Removed all pumpable contents and tank bottom. Cleaned the inside of the heating oil tank. Removed and transported the oil tank and associated piping to a licensed scrap yard Roth Heating Oil Tank Installation. Provided and installed one (1) 275-gallon Roth™ AST. Provided and installed new 3/8-inch copper fuel return oil line to the existing boiler. Provided and installed one (1) Tigerloop. Installed new fill and vent piping on top of the tank. Installed new vent alarm, oil control safety valve, fuel gauge, filter and piping according to NFPA 31, “Standard for the Installation of Oil Burning Equipment”.