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Storage Tank Inspection Checklist <br /> Equipment#: <br /> Item Inspection Task Y N N/A Comments &Observations <br /> Inspect all sample hatches,gage wells, <br /> 4.1 (f) autogages drains,vents, drains, and other X <br /> roof appurtenances for corrosion. <br /> Ultrasonic test roof plate thickness locations <br /> 4.1 (g) upon (3)equidistant test points around the X <br /> circumference of the roof. <br /> 4.2(a) Visually inspect the underside surface of the <br /> Roof Internal roof plates for holes, scale buildup, and X <br /> pitting. <br /> Inspect internal rafters, roof support, and <br /> 4.2( b) attachments for cracking and corrosion. X <br /> Assure that reinforcing pads have been <br /> installed for all clips, braces, brackets, etc. <br /> 4.2 c <br /> ( ) If reinforcing pads are not evident, MT or PT <br /> inspect the welds and deck plate for cracking. X <br /> 4.2(d) Inspect coatings for spalling,disbonds, X <br /> pinholes,etc. <br /> 4.2(e) VT inspect welded or riveted seams for X <br /> cracks, pinholes and corrosion. <br /> 4.2(f) Check that supports have reinforcing pads X <br /> installed. <br /> If external Ultrasonic thickness readings were <br /> 4.2(g) not taken from the external deck, perform the X <br /> UT inspection. <br />