Section 93.410. Spill and overfill prevention.

 

(1)  Prior to delivery, the operator of the product delivery equipment that is transferring the product shall ensure that the volume available in the tank is greater than the volume of product to be transferred to the tank.

(2)  The transfer operation shall be monitored constantly by the operator of the delivery equipment so as to prevent overfilling and spilling.

(3)  Equipment shall be clearly marked so visual and audible warning signals are recognizable to the delivery person.

(4)  Spill and overflow prevention equipment shall be maintained to work as originally designed and installed.

(5)  The fill opening shall be separate from the vent opening.

(6)  

(a) All aboveground storage tanks, whether new or existing, with the fill point not located within a diked area shall be provided with a catch basin or similar containment, except for tanks exempted by par. (d) and tanks that are exempted from secondary containment by s. ATCP 93.420 (1) (a) to (c) . Existing tanks shall comply with this paragraph within 1 year after February 1, 2009.

(b) The catch basin or similar containment to contain spillage at the fill point shall have a minimum liquid capacity of 5 gallons, except where the catch basin or similar containment was installed before February 1, 2009.

(c) The basin shall be equipped with a method to remove product or a drain system that directs spilled product into the tank.

(d) The following tanks are exempt from this requirement:

1. Tanks provided with controls before February 1, 2009 that comply with this subsection.

2. Tanks filled with a manual-shutoff nozzle without a latch-open device.

3. Tanks filled with a tight-connect with either a dry break connection or a manual shutoff valve on the hose-end connection.

(7)  Tanks that are filled via hand-held nozzles shall be constantly attended during product delivery and shall be provided with a vent whistle or with other overfill prevention equipment which provides a visual signal at 90 percent of the tank's capacity.

(8)  Tanks located remote from the fill point, that are filled only with a manual-shutoff nozzle without a latching mechanism shall be provided with overfill prevention equipment which notifies the person filling the tank, with both an audible and a visual signal, that the liquid level has reached 90 percent of the tank's capacity.

(9)  

(a) The following new and existing tanks that have a fill point not located within a diked area shall be provided with overfill prevention equipment which notifies the person filling the tank, with both an audible and a visual signal, that the liquid level has reached 90 percent of the tank's capacity, and which automatically shuts off flow when the quantity of liquid in the tank reaches 95 percent of the tank's capacity:

1. Tanks using tight-connect delivery.

2. Tanks located remote from the fill point, that use delivery nozzles with latch-open devices.

(b) Existing tank systems shall comply with this subsection within 2 years after August 1, 2009.

(10)  

(a) Operators shall utilize the procedures and equipment as specified in PEI RP600 for preventing overfilling of new and existing shop-built aboveground tanks.

(b) Fuel-delivery persons shall utilize the procedures in PEI RP600 for preventing overfilling of new and existing shop-built aboveground tanks, and may not interfere with equipment that is intended to prevent overfilling.

CR 07-029 : cr. Register November 2008 No. 635 , eff. 2-1-09; CR 09-017 : am. (6) (c) and (9) Register July 2009 No. 643 , eff. 8-1-09; correction in (6) (a) made under s. 13.92 (4) (b) 7. , Stats., Register December 2011 No. 672 ; correction in (6) (a) made under s. 13.92 (4) (b) 7. , Stats., Register October 2013 No. 694 .

Note

PEI RP600 does not mandate installation of equipment, but instead addresses how to effectively use the equipment that is provided, as required by other sections and referenced standards in this chapter. Microsoft Windows NT 6.1.7601 Service Pack 1 Under sections ATCP 93.470 and ATCP 93.585 (2) (b) , fuel-delivery persons must immediately inform the owner or operator of any spilling or overfilling which occurs during the delivery procedure and which may result in or be a release. Requirements for the owner or operator to report, investigate and clean up any spills and overfills are contained in sections ATCP 93.575 to 93.585 . Microsoft Windows NT 6.1.7601 Service Pack 1