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PO BOX 1928 <br />BENICIA, CA 94510 <br />TEL 707 346 5058 <br />FAX 707 922 2284 GEORGE REED INC. STI SP001 EXTERNAL INSPECTION <br />ESCALON, CA <br /> www.powerseicom 7,000 GALLONS OIL TANK <br /> <br />STI-SP001 External George Reed Inc. Escalon, CA Tank 7,000 Gal October 2024 Project #24-378 Rev0 <br />© 2024 PEI Inc. Page 3 of 43 Date Printed: 11/7/24 7:42 AM <br /> <br />4. Access <br />structure <br />• VT and <br />measurement of <br />access structure <br />components <br />a. The tank is not equipped with access ladder to the roof. <br />Consider installing a vertical cage ladder to access the tank <br />roof and appurtenances. <br />b. The secondary containment system does not have a <br />dedicated ingress and egress system. Consider installing a <br />proper access structure for the containment. <br />5. Coatings • VT of Coatings a. The tank's overall coating system is in good condition. <br />Thickness readings did not identify significant metal loss due <br />to corrosion. Minor coating failure and light rusting are <br />present along tank shell. Consider applying touch-up coating <br />repairs on isolated areas of coating failures along the tank. <br />b. The piping (inlet and outlet) does not have coating system. <br />Consider applying paint/coating protection on tank piping <br />system. <br />c. Minor corrosion and light rusting were present on some <br />hardware, D-ring, and pivot mount not coated. Consider <br />applying touch up coating on the hardware. <br />6. Venting • VT of existing <br />venting system <br />• Calculate Venting <br />Requirements <br />a. The tank total existing venting capacity as computed is <br />16,500 SCFH, which is sufficient. The tank inbreathing is <br />1,481 SCFH and an outbreathing of 122 SCFH in normal <br />operating condition. However, as computed using UL 142 & <br />NFPA 30 standards the required emergency vent capacity is <br />343,052 SCFH which makes the existing venting capacity <br />insufficient. Verify as-built drawing if the tank has a frangible <br />roof joint design feature. If it does not, install 1x 8-in or <br />greater diameter emergency vent in the earliest allowable <br />period. <br />7. Grounding • VT grounding <br />system <br />a. The tank is not equipped with a dedicated grounding <br />system. Consider installing a grounding system that meets <br />NFPA design requirements. <br />8. Signage and <br />Placards <br />• VT to document <br />Fire Department <br />Signage <br />a. The tank is not equipped with a nameplate with basic tank <br />information. Additionally, warning labels, NFPA diamond <br />placards and product labels are faded and starting to <br />deteriorate but are still in legible condition. Consider installing <br />nameplate with pertinent tank information and replacing <br />faded tank signages. <br />9. Gauging • VT of tank <br />Gauging system <br />a. The tank uses a threaded coupling tied to a steel cable on <br />a pulley system to measure the level of the product inside the <br />tank. Lines marked on the tank each indicate approximately <br />500 gallons of fill and serves as the gauge to measure the <br />product volume. During the discussion with the tank crew, it <br />was mentioned that the fill capacity they practice is only up <br />to about 3000-3500 gallons max which is half or less than the <br />maximum tank capacity. Consider replacing with appropriate <br />tank level gauging system. <br />10. Piping • VT of piping <br />system <br />a. The tank and fill/dispense lines are equipped with <br />threaded components. Minor stains are present on these <br />connections with no seeps observed. Consider installing <br />100% caulking system on the threaded fittings or replacing <br />with seal-welded counterparts and painting/coating piping <br />systems. <br />