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TU Regional Engineering <br />LAST External Inspection Checklist"" 100% r --- <br />LAST <br />External Inspection Checklist <br />2 Have vertical seams been full fillet lap -welded? <br />J <br />3 If no record exists of vertical riveted seams, <br />dimension and sketch or photograph the rivet <br />pattern and record the number of rows, rivet <br />size, pitch, and whether the joint is butt -riveted <br />a r-- <br />or lap -riveted. <br />2.4 <br />WINO GIRDER <br />E 10KI <br />NA <br />Comments: <br />1 <br />Inspect wind girder(s) (paint, corrosion), <br />especially at tack welds. <br />2 <br />Inspect supports and support welds. <br />3 <br />Does the wind girder have drain holes at low <br />points? <br />4 <br />Record wind girder dimensions, Including <br />thickness and elevation <br />2.5 <br />ANCHORS <br />E <br />OK <br />NA <br />Comments: <br />1 <br />Inspect anchor bolts and chairs and record <br />one- on ase -A 4LA at <br />dimensions Including seacing. <br />2 <br />Inspect, bolts for stretching, corrosion, or <br />ull-out <br />2.6 <br />SHELL INSULATION <br />E <br />OK <br />NA <br />Comments: <br />1 <br />Are there gaps in the Insulation jacket that allow <br />precipitation to penetrate the insulation? <br />2 <br />Record the Insulation dimensions and type <br />3 <br />Check for corrosion behind the insulation at <br />openings or damaged areas <br />4 <br />Can water drain out from behind the Insulation? <br />(typically the Insulation stops 4 to 6 in. above <br />the shell to bottom weld. Is the insulation <br />caulked or sealed to the bottom extension? <br />5 <br />Inspect sealing of insulation around man holes <br />1 <br />and nozzles <br />2.7 <br />SHELL DIMENSIONS <br />E <br />OK <br />NA <br />Comments: <br />1 <br />Record the tank arcumference and the elevation <br />at which the circumference was measured. <br />2 <br />Record the shell height and the height of each <br />shell course <br />3 <br />For double bottom tanks, measure and record <br />any shell offset tetween the shell and the dead <br />shell. Generally offset measurements are taken <br />at settlement survey locations, <br />3.0 <br />SHELL APPURTENANCES <br />3.1 <br />MAN HODS AND NOZZLES' <br />E <br />10K INA <br />I Comments: <br />1 <br />Inspect for cracks and leakage on welds at <br />nozzles man holes and reinforcing laces. <br />2 <br />Inspect for shell plate dimpling around nozzles, <br />caused by excessive pipe deflection. <br />3 <br />Inspect for flange leaks and leaks around <br />bolting. <br />4 <br />Are telltale holes open to the atmosphere? <br />5 <br />Record each nozzle and man hole associated <br />oe <br />dimensions (size, reinforcing plate dimensions, <br />centerline elevation, telltale hole, weld spacing, <br />and circumferential location thicknesses <br />3.2 <br />EXTERNAL <br />PIPING <br />E <br />JOK NA <br />Comments: <br />I <br />Inspect piping, Flanges, and valves for leaks up <br />to the first flange, threaded joint, or welded <br />ioint outside the tank. <br />2 <br />Inspect fire fighting system components. <br />3 <br />Is there anchored piping which would be <br />hazardous to shell connections during earth <br />movement? <br />4 <br />Check that thermal pressure relief of piping to <br />Revision Date: Oct2013 Page 3 of 9 <br />- :ALTH <br />r <br />