Laserfiche WebLink
WALTON <br />ENGINEERING, INC. <br />Overfill Prevention Inspection - OPW 61 and 71 Series Devices <br />Date: 7/22/2021 <br />Owner: QSM#144 <br />Facility: 7272 WEST LN <br />OPW Overfill Model Number: 61/71 SO <br />Part 1 - Proper Height Setting Calculation <br />Part 2 - Device Certification Criteria Evaluation <br />Does the overfill prevention device meet the 95% <br />requirement? <br />Yes <br />Tank 1 <br />Tank 2 <br />Tank 3 <br />Tank 4 <br />Maximum Tank Volume Per: <br />A Gallons <br />9684 <br />9684 <br />7841 <br />Max shut off requirement for flapper is 95% <br />B 95% <br />95 <br />95 <br />95 <br />Multiply Max tank volume by 95% <br />c Gallons <br />9200 <br />9200 <br />7448 <br />Yes <br />Use tank chart or ATG to determine height of <br />movement, weakening due to wear and corrosion <br />calculated volume <br />D Inches <br />803/8 <br />803/8 <br />80 1/4 <br />Measure top of fill riser threads, or face seal <br />adapter <br />E Inches <br />32 <br />33 <br />36 <br />Tank diameter (From Tank Chart) <br />F Inches <br />893/4 <br />893/4 <br />893/4 <br />Upper Tube in Tank (G) F -D = G <br />G Inches <br />93/8 <br />93/8 <br />91/2 <br />Subtract 2" from upper tube in tank G-2"= K <br />K Inches <br />73/8 <br />73/8 <br />71/2 <br />Calculated minimum upper tube length (I) <br />K+E=I <br />I Inches <br />393/8 <br />403/8 <br />431/2 <br />Actual measured upper tube length (Without <br />fill adapter) <br />J Inches <br />403/4 <br />41 3/4 <br />443/4 <br />Part 2 - Device Certification Criteria Evaluation <br />Does the overfill prevention device meet the 95% <br />requirement? <br />Yes <br />Yes <br />Yes <br />Is the actual measured upper tube length 6.5 inches or <br />Yes <br />Yes <br />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 <br />Yes <br />Yes <br />Yes <br />movement, weakening due to wear and corrosion <br />Device Overfill Certification PASS / FAIL <br />PASS <br />PASS <br />PASS <br />Drop Tube Testing PASS / FAIL <br />PASS <br />PASS <br />PASS <br />Technician certifies that the device is operationally compliant. <br />Signature of Technician:MAXWELL HINES <br />Technician's Name: MAXWELL HINES <br />Date: 7/23/21 <br />