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Inspect all nozzles, manways, piping manifolds <br /> and other shell appurtenances for corrosion <br /> 2.1 ( p ) pitting, cracks, and other anomalies. Measure X Light Local Corrosion <br /> wall thicknesses of components <br /> Ultrasonically inspect for thickness for each <br /> shell course at the bottom, middle, and top of Access limited, through wall corrosion requires <br /> 2.1 ( q ) each course at ( 8 ) equidistant locations X <br /> around the shell circumference. Calculate and amore extensive inspection or replacement <br /> assess as per STI SP-001. <br /> Fixed Roof Visually inspect and record all roof deck plate <br /> Inspection surfaces for weld and plate material integrity. ( Debris, oil residue and scale covering entire <br /> 4.1 <br /> ( a ) Check edges and central rafters for thinning X roof <br /> Roof External with UT or ball hammer prior to accessing the <br /> roof deck. ) <br /> 4.1 ( b ) Visually inspect and record paint/ coating X 90% failure, light to moderate general <br /> failures, holes, pitting and corrosion product. corrosion <br /> Inspect for indications of standing water where <br /> 4.1 ( c ) roof rafter failures may be in effect. X No standing water <br /> Inspect girders, supports, weldments, <br /> 4.1 ( d ) attachments and appurtenances for structural X <br /> damage, distortion and corrosion. <br /> 4.1 e <br /> ( ) Inspect roof scaffold supports, and walkways <br /> for corrosion. X <br /> Page No. 5 of 7 <br />