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UST System Overfill Prevention Equipment Inspection Requirements-Page 3 of 6 E. Industry Standards for Inspections and Testing 1. As noted above, the use of industry codes or engineering standards is only allowed in cases where the overfill prevention equipment manufacturer does not have their own guidelines or standards. 2. Industry codes must be published. 3. The following table summarizes spill container testing standards published in the Petroleum Equipment Institute's (PEI) Recommended Practices for the Testing and Verification of Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST Facilities (PEI/RP1200-17): Equipment Type RP1200 Inspection/Testing Standard Mechanical Overfill • Remove the drop tube. Prevention (Flapper) . Visually inspect valve and float for damage or corrosion that inhibits Valve functionality and remove any debris and foreign objects. • Manually move the float mechanism to ensure free movement. • With the float mechanism in the shutoff(closed) position, visually inspect the drop tube and confirm that the shutoff valve will move into the product flow path. • If possible, verify that the bypass valve is open and free of blockage. • Using the manufacturer's procedure, examine the drop tube and shutoff valve to determine if product flow will be completely shut off at 95% of tank capacity. Make any adjustments necessary to ensure that flow will be completely shut off when the tank is no more than 95%full. • Reinstall the drop tube. • Pass Criteria = Device functions as designed and complete shutoff of product flow is able to occur when the tank is no more than 95% full. Ball Float • Verify that all tank-top fittings are vapor-tight. • Remove the ball float assembly. • Visually inspect the float and cage and remove any debris or foreign objects. • Check the ball for holes and cracks, free movement in the cage, and corrosion that affects proper operation of the ball float. • Check the vent orifice to confirm that it is located near the top of the tank and open. • Refer to the manufacturer's installation procedure to confirm that vapor flow will be restricted when the tank is no more than 90%full. • Reinstall the ball float per the manufacturer's installation instructions. • Pass Criteria=Ball float functions as designed,flow restriction occurs when the tank is no more than 90%full, and the tank-top fittings are vapor-tight. UN-117 www.unidocs.org 3/6-Rev.11/05/18