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WALTON <br /> ENGINEERING , INC „ <br /> Overfill Prevention Inspection - OPW 61 and 71 Series Devices <br /> Date : 10/5/2018 <br /> Owner : <br /> Facility : Colonial Energy #40134 <br /> OPW Overfill Model Number: 71 SO <br /> Part 1 - Proper Height Setting Calculation <br /> Tank 1 Tank 2 Tank 3 Tank 4 <br /> Maximum Tank Volume Per: A Gallons 12032 10026 <br /> Max shut off requirement for flapper is 95 % B 95 % . 95 . 95 <br /> Multiply Max tank volume by 95 % C Gallons 11430 9525 <br /> Use tank chart or ATG to determine height of D Inches 863/8 863/8 <br /> calculated volume <br /> Measure top of fill riser threads , or face seal E Inches 41 " 427/8 <br /> adapter <br /> Tank diameter (From Tank Chart) r Inches 95 . 75 95 . 75" <br /> Upper Tube in Tank (G) F-D = G G Inches 93/8 93/8 <br /> Subtract 2 " fi•om upper tube in tank G-2 "= K x Inches 73/8 73/8 <br /> Calculated minimum upper tube length (I) I Inches 483/8 50114 <br /> K+E=I <br /> Actual measured upper tube length (Without J Inches 487/8 501 /2 <br /> fill adapter) (J) <br /> Part 2 - Device Certification Criteria Evaluation <br /> Does the overfill prevention device meet the 95% Yes Yes <br /> requirement? <br /> Is the actual measured upper tube length 6 . 5 inches or Yes Yes <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 Yes Yes <br /> movement, weakening due to wear and corrosion) <br /> Device Overfill Certification PASS / FAIL Pass Pass <br /> Drop Tube Testing PASS / FAIL Pass Pass <br /> Technician certifies that the device is operationally compliant. <br /> Signature of Technician : ltooe)4 Date : 10/5/ 18 <br /> Technician' s Name : Nick Janoe <br />