Section 93.505. Spill and overfill prevention.

 

(1)   General.

(a) Prior to delivery, the operator of the fuel 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.

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

(2)   Equipment. All underground storage tank systems, whether new or existing, shall meet all of the following requirements:

(a)

1. A liquid-tight containment system with a minimum capacity of 5 gallons shall be provided on top of the tank where connections are made for product fill piping, except the 5-gallon minimum does not apply to containment that was installed before February 1, 2009.

2. The basin shall be equipped with either a drain system that directs spilled product into the tank, or a mechanism to pump product out of the basin.

(b) Storage tank overfill prevention equipment shall be provided that complies with NFPA 30 section 21.7.1.5 and PEI RP100 chapter 7. Existing tank systems shall comply with this paragraph within 2 years after February 1, 2009.

(3)   Maintenance. All new and existing spill and overfill protection shall be maintained to perform as originally intended.

CR 07-029 : cr. Register November 2008 No. 635 , eff. 2-1-09; CR 09-017 : am. (2) (a) 2. Register July 2009 No. 643 , eff. 8-1-09.

Note

NFPA 30 section 21.7.1.5 requires equipment that will (1) automatically shut off the flow into a tank when the tank is no more than 95 percent full; and (2) alert the transfer operator when the tank is no more than 90 percent full, by restricting the flow into the tank or triggering a high-level alarm. Retrofit equipment is available which complies with these requirements and which can be installed in a tank without removing pavement. See PEI RP100 section 7.3.2 for description of how the contents of the delivery hose can be drained into the tank after an automatic shut-off valve closes. Microsoft Windows NT 6.1.7601 Service Pack 1 Under section 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