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Grounding r Bonding • • Comments/Recommendations <br /> re the Tanks Grounded And/Or Bonded No Ground tanks per NFPA 780 or other accepted industry <br /> Properly? standard. ** <br /> Other <br /> ObservationsStairways-Handrails-Platforms-Ladders <br /> Fairways-Handrails- Platforms-Ladders 19tair rungs on east side of tank. <br /> Other <br /> 5.0 External Shell <br /> ,JAMMMUCoatings Observations Comments/RecommendaEons <br /> Tank External Coating Paint 14.611 <br /> External Coating Condition Good/some small chips/rust ," <br /> spots <br /> Other <br /> ObservationsShell <br /> Condition Of Welds Good <br /> Corrosion No <br /> Evidence of Distortion No <br /> Mechanical Damage No <br /> Evidence of Leaks No <br /> Repads or Changes to Original Design? No <br /> Other <br /> vosefffffhs <br /> Insulation Missing? N/A <br /> Evidence of Moisture? N/A <br /> Evidence of Mold? N/A <br /> Damage to Insulation? N/A <br /> Corrosion Under Insulation? N/A <br /> Other <br /> Tank Roof •. Comments/Recommendations <br /> Standing Water(low areas)? INo <br /> Coating Failure? INo <br /> Other <br /> . 0 Ultrasonic Thickness Testing <br /> Comments <br /> Ultrasonic Thickness Testing UT measurements were taken on single wall tanks as required by STI SP001 formal <br /> external inspection protocol. See figure 1.1 for a summary of results. <br /> Instrument Manufacturer Olympus <br /> Model No. 38DLP <br /> Calibration Due Date Calibrated for use <br /> Presentation -Scan <br /> Transducer Manufacturer Olympus <br /> Model No. D7906-SM <br /> Previous UTT Inspection Records Available? No <br /> Are UL 142 Steel Thickness Standards Being UL 142 manufacturing specifications will be used for comparison purposes. 10K horizontal <br /> Used For Comparison Purposes? tanks built to UL 142 standards will have a minimum steel thickness of.240"on the shell. <br /> UTT Comments The mean or average reading taken was .244". Of the UT readings taken there were no <br /> indications requiring repair or further action. <br /> Other readings were taken every foot starting on the n/w corner and going clock wise around the <br /> tank. <br /> 6 <br />