Code of Maine Rules
02 - DEPARTMENT OF PROFESSIONAL AND FINANCIAL REGULATION
385 - MANUFACTURED HOUSING BOARD
Chapter 850 - COMMUNITY LICENSING - STANDARDS
Section 385-850-4 - Fuel Supplies

A. Oil supply tanks shall not be installed on wood or other combustible surfaces or supports.

B. Outside oil supply tanks of 350 gallons or less shall be supported in accordance with Section 4(1)(C) or (D) of this chapter. Tanks larger than 350 gallons shall comply with all rules of the Maine Fuel Board.

C. A horizontal oil supply tank shall be mounted on steel pipe legs, not exceeding 12 inches in height with floor flanges at the base of the steel legs, supported by four 4 x 8 x 16 inch solid cement blocks, or a one piece minimum 3 inches thick reinforced concrete pad not smaller than the tank dimensions. The four blocks or the concrete pad shall rest on a firm subgrade consisting of a bed of compacted, well-draining gravel (6 inch minimum), crushed stone (6 inch minimum), or some other subgrade approved by the Board. There must be a minimum of 4 inches of clearance under the tank from any surface. See Figure 12(a) below.

D. An upright or vertical oil supply tank shall be mounted on steel pipe legs not exceeding 12 inches in height, with floor flanges at the base of the steel leg, and supported by a minimum 3 inches thick reinforced concrete pad. The reinforced concrete pad's width and length shall not be smaller than the tank dimensions. The concrete pad shall be of one piece construction. The concrete pad shall rest on a bed of compacted, well- draining gravel (6 inches minimum), crushed stone (6 inches minimum), or some other subgrade approved by the Board. There must be a minimum of 4 inches of clearance under the tank from any surface. See Figure 12(b) below.

E. An outside oil supply tank servicing a manufactured home as defined in Chapter 820, Section 1(7)(B) of the Board's rules may only be installed by a licensee of the Maine Fuel Board, including a manufactured housing mechanic or dealer who holds a limited license from the Maine Fuel Board to install outside oil tanks at manufactured housing pursuant to 10 M.R.S. §2401.

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F. Outside tanks and piping must be located such that they are not subject to falling snow or ice. To meet this requirement, the tank and outdoor piping must be installed with a protective cover over the tank valve, oil filter and other piping without structural support or not attached to the side of the building.

G. All oil supply lines shall be protected from physical damage or corrosion.

A. A listed lever or wheel, thermally operated oil shut-off valve designed to shut off the oil supply in case of fire, shall be installed at the burner, at the supply tank, and where the oil supply line enters (inside) the building when outside tanks are used.

B. Whenever the oil supply is taken from the top of an oil tank, whether the oil tank is outside or inside, a thermally operated wheel or lever type shut-off valve shall be installed at the tank and at the burner for control of the fuel. A check valve may be used in the supply line, but no valve or obstruction shall be placed in a return line connected to a burner or pump. A thermally operated valve is required on supply lines from outside tanks at the entrance inside the building and shall be located just inside of the structure wall.

A. Cylinders having water capacities greater than 2.7 lb. (1.2 kg) and connected for use shall stand on a firm and substantially level surface. If necessary, they shall be secured in an upright position. Department of Transportation cylinders in permanent installations must rest on noncombustible materials.

B. Cylinders not in use shall be removed from the community. The provisions of this paragraph are applicable to cylinders of 1000 lb (454 kg) water capacity, or less, that are not connected for use, whether filled, partially filled, or empty (if they have been in LP-Gas service).