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. . ...... . . <br /> . . .. . . . ... . ._. ........ .. <br /> c for wrrosion, YaNIA <br /> NIA O Go r CC S l O or <br /> 23 Supports Check N <br /> paint failure,etc. <br /> 2.4 Water Water drains awaya No` N/A <br /> drainage from tank? <br /> 2.5 Tank Strap secured and in as No' N/A <br /> grounding good condition? <br /> 3.0 Cathodic Protection <br /> 3.1 Gavlvanic Confirm system is Yes No NIA <br /> cathodic functional,includes the <br /> protection wire connections for <br /> a stem alvanic a stems <br /> 3.2 Impressed a. Inspect the as No' NIA V p ar ro D <br /> current operational <br /> system components(power <br /> switch,meters,and <br /> alarms. <br /> b. Record hour meter, es No" WA <br /> ammeterand <br /> voltmeter readings. <br /> 4.1 Tank Shell Hca Check ft NG <br /> 4.1 Canting Check for orating Yes l <br /> failure <br /> 4 2 Steel Check for: Yea' o1 el k e4-t A., <br /> cond,n • Dents <br /> • Buckling <br /> • Bulging <br /> • Corrosion <br /> Cackm <br /> 4.3 Roof slope Check tallow points Yes" No NI <br /> and standing water <br /> 5.0TankE ui menl <br /> 5.1 Vents Verify that s No <br /> components are <br /> moving freely and vent <br /> passageways are not <br /> obstructed for: <br /> • Emergency vent <br /> covers <br /> • Pressure/vacuum <br /> vent poppets <br /> • Other moving vent <br /> cam ,rents <br /> AST INSPECTION STANDARD 9 SEPTEMBER 2011 <br /> COPYRIGHT®2011 Steel Tank Institute <br />