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WALTON <br /> ENGINEERING, INC. ,M0,0ge�c/ 7(o <br /> Overfill Prevention Inspection- OPW 61 and 71 Series Devices <br /> Date: <br /> Owner: <br /> Facility: <br /> OPW Overfill Model Number. <br /> Part 1 -Proper Height Setting Calculation <br /> Tank 1 Tank 2 Tank 3 Tank 4 <br /> Maximum Tank Volume Per: A Gallons o1 03� <br /> Max shut off requirement for flapper is 95% s 95% <br /> Multiply Max tank volume by 95% C Gallons 'J <br /> Use tank chart or ATG to determine height of D Inches L713 <br /> calculated volume v <br /> Measure top of fill riser threads,or face seal E Inches <br /> adapter <br /> Tank diameter(From Tank Chart) F Inches 7J`� <br /> Upper Tube in Tank(G)F-D=G G Inches 97,37,5 <br /> Subtract 2"from upper tube in tank G-2"=K K Inches <br /> Calculated minimum upper tube length(1) I Inches <br /> +E=I <br /> Actual measured upper tube length(Without <br /> fill adapter) J laches <br /> Part 2*Device Certification Criteria Evaluation <br /> Does the overfill prevention device meet the 95% <br /> requirement? <br /> Is the actual measured upper tube length 6.5 inches or <br /> more than the fill riser?(J must be 6.5"or more than E) <br /> Does the overfill prevention device function as required? <br /> (Inspect the device for damage,contamination,freedom of <br /> movement,weakening due to wear and corrosion <br /> Device Overfill Certification PASS/FAH. <br /> Drop Tube Testing PASS/FAIL <br /> Technician certifies that the device is operationally compliant. <br /> Signature of Technician: Date: <br /> Technician's Name: <br />