Code of Maine Rules › 02 - DEPARTMENT OF PROFESSIONAL AND FINANCIAL REGULATION › 658 - MAINE FUEL BOARD › Chapter 8 - INSTALLATION OF OIL BURNING EQUIPMENT › Section 658-8-10 - Outside Oil Supply Tanks

Current through 2024-29, July 17, 2024
8.10.1
Installation on Wood Not Permitted
Oil supply tanks shall not be installed on wood or other
				  combustible surfaces or supports.
8.10.2
Support of Horizontal Oil Supply
				Tanks
A horizontal oil supply tank must be mounted on steel pipe
				  legs, not exceeding twelve (12) inches in height with floor flanges at the base
				  of the steel legs and be supported by four 4" x 8" x 16" solid concrete blocks
				  or a one piece reinforced concrete pad not smaller than the tank dimensions.
				  The four (4) blocks or the pad must 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 four (4) inches of clearance under the tank from any surface. See Figure
				  8-1.
8.10.3
Support
				of Vertical Oil Supply Tanks
An upright or vertical oil supply tank must be mounted on
				  steel pipe legs not exceeding twelve (12) inches in height, with floor flanges
				  at the base of the steel leg and must be supported by a reinforced concrete pad
				  at least three (3) inches thick. The pad's width and length shall not be
				  smaller than the tank dimensions. The pad must be of one-piece construction.
				  The pad must rest on 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 four (4) inches of clearance under the tank from any
				  surface. See Figure 8-2.
Click to
				  view image
8.10.4
Leg Brackets
The leg brackets welded on the tank are not considered a leg
				  and may not be used to rest on the side of the reinforced concrete pad or solid
				  concrete blocks.
8.10.5
Legs Not to be Embedded in Concrete
When a reinforced concrete pad is fabricated on-site, the
				  legs of the supply tanks shall not be embedded as part of the pad.
8.10.6
Shims Not
				Permitted
In all installations, the pipe flanges must be in direct
				  contact with a reinforced concrete pad or solid concrete blocks. The use of
				  shims is prohibited.
8.10.7
Tank Disposal
Tanks must be disposed of in accordance with the rules of the
				  Maine Department of Environmental Protection.
8.10.8
Prevention of Oil Spills Caused
				by Snow or Ice
In order to prevent oil spills, 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 any piping which is either without
				  structural support or not attached to the side of the building.
8.10.9
Existing Tanks to
				Meet Current Standards
All existing outside supply tanks must be held to the same
				  standards as newly installed tanks.
8.10.10
Fuel Supply Line: Single Tank
				Installations
For a single-tank installation, the fuel supply line shall
				  not extend more than twelve (12) inches beyond the face of the
				  tank.