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Grounding and Bonding Observations Comments/Recommendations <br />Are the Tanks Grounded And/Or Bonded <br />Properly?No Ground tanks per NFPA 780 or other accepted industry <br />standard. ** <br />Other <br />Stairways - Handrails - Platforms - Ladders Observations Comments/Recommendations <br />Stairways - Handrails - Platforms - Ladders None <br />Other <br /> <br />5.0 External Shell <br />External Coatings Observations Comments/Recommendations <br />Tank External Coating Paint <br />External Coating Condition Fair Minor paint failure present. <br />Other Na <br />Shell Observations Comments/Recommendations <br />Condition Of Welds Good <br />Corrosion Yes Some rust at paint failure spots. <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 />Insulation Observations Comments/Recommendations <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 Observations Comments/Recommendations <br />Standing Water(low areas)?N/A <br />Coating Failure?No <br />Other <br /> <br /> <br />6.0 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 A-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 <br />Used For Comparison Purposes? <br />UL 142 manufacturing specifications will be used for comparison purposes. 12K horizontal <br />tanks built to UL 142 standards will have a minimum steel thickness of .240". <br />UTT Comments The mean or average reading taken was .235". Of the UT readings taken there were no <br />indications requiring repair or further action. <br />Other <br /> <br />6