"Board", the board of fire prevention regulations within the department.
"Fuel supply line", a line from a tank to a burner in which oil is supplied to the burner.
"Fuel return line", a line that returns unused fuel oil back to the tank.
"Oil burner", a device for burning oil in heating appliances including, but not limited to, boilers, furnaces, water heaters or ranges.
"Oil safety valve", a device that prevents the flow of oil if a fuel supply line breaks.
"Residential property", a 1- to 4-unit dwelling used for living or sleeping.
"Tank", a liquid fuel tank in which heating oil is stored and from which heating oil is delivered or pumped through a fuel supply line to an oil burner, whether located within a dwelling or other structure, including tanks installed at or below grade level, or located outdoors but excluding underground tanks wherever located.
Mass. Gen. Laws ch. 148, § 38J