11.17.1
Code
Compliance Required
Except as set forth in Section 11.17.2, all tanks serving a
waste oil appliance must conform to NFPA 31 and this Chapter.
11.17.2
Exception
A waste oil supply tank of 660 gallons, or two tanks of
aggregate capacity, supplying a Waste Oil Appliance must be installed with a
receptacle or funnel used specifically for introducing waste oils into a
specifically marked waste oil supply tank when the tank and accessories have a
2-inch diameter (nominal inside diameter) iron pipe vent to the outside of the
building or structure.
11.17.3
Arrangement of Waste Oil Tank
Recovery Receptacle
The arrangement of the waste oil tank recovery receptacle
must comply with the following:
11.17.3.1 The recovered waste oil must be
introduced into the supply tank manually through a valved recovery pan or
funnel for waste oils only and must be located at the top of the tank. See
Figure 11-2. The receptacle to receive the oils may be installed as follows:
1. Install a close x 2-inch threaded (NPT)
metal nipple in the oil supply tank's 2-inch access opening;
2. Install the receptacle (funnel, pan, catch
basin, etc.) at the top of the valve; and
3. Install a gauge in the other available
access opening of the tank.
11.17.3.2 Spillage by individuals pouring
recovered waste oil from a pan, catch basin, or other type of recovery
container, must be minimized by metal steps, corresponding to the height of the
tank, so that an individual does not have to reach beyond his or her shoulder
level while transferring the fuel from the recovery container to the oil supply
receptacle. Steps provided must be a minimum of three feet (3) wide, with a
tread height of not more than eight (8) inches. Ladders are not an acceptable
alternative.
11.17.3.3 Any spillage
must be cleaned up immediately and reported to the Maine Department of
Environmental Protection.
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11.17.4
Optional Tank
Arrangement
As an option to the tank arrangement in Section 11.17.3 and
Figure 11-2, the tank arrangement may be supplied with a funnel and a fill and
vent pipe extending to the outside, provided that the fill point is identified
by a metal placard attached to the building stating: "Waste oil tank, check for
inside valve closure prior to filling." See Figure 11-3.
11.17.4.1 The waste oil supply tank in Figure
11-3 must be provided with a combination oil gauge and vent alarm at the vent
pipe due to the availability of only three (3) access openings in the tank.
Waste oil tanks with four (4) access openings may use a separate gauge and vent
alarm.
11.17.4.2 Spillage due to
pouring recovered waste oil from a pan, catch basin, or other type of recovery
container must be minimized by metal steps, corresponding to the height of the
tank, so that an individual does not have to reach beyond his or her shoulder
level while transferring the fuel from the recovery container to the oil supply
receptacle. Steps provided must be a minimum of three (3) feet wide, with a
tread height of not more than eight (8) inches. Ladders are not an acceptable
alternative.
11.17.4.3 Any spillage
must be cleaned up immediately and reported to the Maine Department of
Environmental Protection.
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