§ 13.34. Support of storage tanks.

 (a)  Storage tanks installed above ground, except for skid tanks, shall be provided with substantial masonry or noncombustible structural supports on firm masonry foundations.

 (b)  Horizontal tanks shall be mounted on saddles to permit expansion and contraction. Every tank shall be so supported to prevent the concentration of excessive loads on the supporting portion of the shell. Structural metal supports may be employed when they are protected against fire in an effective manner. Suitable means of preventing corrosion shall be provided on that portion of the tank in contact with the foundations or saddles.

 (c)  Tanks of 2,000 or less gallons water capacity may be installed with ferrous metal supports if mounted on concrete pads or footings, and if the distance from the outside bottom of the tank shell to the ground does not exceed 24 inches.

 (d)  Tanks with the foundations attached, that is, portable or semiportable tanks with suitable steel runners or skids and usually known in the industry as skid tanks, shall have the supports designed, installed and used in accordance with accepted practice in the industry.

 (e)  Skids or lugs for attachment of skids shall be firmly secured. However, skid tanks shall not be used in place of tank trucks, tank trailers or tank semitrailers for regular deliveries.

   This section cited in 34 Pa. Code §  3.12 (relating to frequency of inspection); and 34 Pa. Code §  13.4 (relating to scope).