1305.9.4 Drain pan at base of shafts with leak detection.
MC § 1305.9.4
A metal drain pan shall be installed at the base of every vertical shaft enclosing the fuel-oil piping. Where the bottom of the shaft is located outside the fuel oil storage tank room, the drain pan shall be connected to and drained into a containment enclosure at the horizontal offset of fuel-oil piping. On the lowest level in the building, the outer containment of horizontal offsets shall be terminated inside the main storage tank room or transfer pump room. A drain pipe shall be provided from the lowest point in the containment enclosure to a minimum 55-gallon (208.2 L) container with a leak detection alarm, arranged so as to sound an alarm and stop the transfer pump.
