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American Biodiesel _��_ Silo S-1 <br /> Stockton, CA '= Out of Service Inspection <br /> Table of Contents <br /> 1.0 Job Information ...................................................................................................................................3 <br /> 2.0 Tank Inspection Data Sheet................................................................................................................4 <br /> 3.0 Summarized Recommendations .........................................................................................................5 <br /> 4.0 Inspection Report................................................................................................................................6 <br /> 4.1 Shell.................................................................................................................................................................6 <br /> 4.2 Silo Nozzles.....................................................................................................................................................7 <br /> 4.3 Top Head Plate................................................................................................................................................7 <br /> 5.0 Calculations.........................................................................................................................................8 <br /> 5.1 Minimum Thickness Calculations - One Foot Method .....................................................................................8 <br /> 5.2 Allowable Hydrostatic Test Height...................................................................................................................8 <br /> 6.0 Remaining Life Calculations................................................................................................................9 <br /> 6.1 Shell Plates Remaining Life.............................................................................................................................9 <br /> 6.2 Top Head Plate Remaining Life.......................................................................................................................9 <br /> 7.0 Inspection Interval Calculations......................................................................................................... 10 <br /> 7.1 Period Until Next External Inspection ............................................................................................................ 10 <br /> 7.2 Period Until Next External UT Inspection....................................................................................................... 10 <br /> 8.0 Ultrasonic Thickness Data................................................................................................................. 11 <br /> 8.1 Silo UT Survey............................................................................................................................................... 11 <br /> 8.2 Silo Nozzle UT............................................................................................................................................... 12 <br /> 8.3 Shell Plate UT................................................................................................................................................ 12 <br /> 8.4 Silo UT Grid Data........................................................................................................................................... 13 <br /> 8.5 MT inspection report for tested welds............................................................................................................ 13 <br /> 9.0 Drawings ........................................................................................................................................... 13 <br /> 9.1 Silo Layout detail and UT locations............................................................................................................ 13 <br /> 10.0 Photographs.................................................................................................................................... 13 <br /> 11.0 NDE Equipment Used ..................................................................................................................... 13 <br /> 11.1 Ultrasonic..................................................................................................................................................... 13 <br /> 11.2 Pit Gauge..................................................................................................................................................... 13 <br /> 11.3 Magnetic Particles ....................................................................................................................................... 13 <br /> Report Date Petroleum&Refractory, Inc. Page 2 of 21 <br /> March 6,2007 TankReporter 13.91 <br />