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T& -) Regional Engineering <br />a fsn....:Sa 11 `Wr <br />LAST External inspection Checklist <br />MAY 2 6 2017 <br />LAST External Inspection Checklist <br />Terminal: <br />Tank Number: <br />Inspection Date: <br />1.0 <br />FOUNDATION <br />1.1 <br />GENERAL <br />E <br />OK NA <br />Comments: <br />1 Identify the type of foundation (concrete ring, <br />concrete slab, asphalt, crushed stone, earth, <br />etc. <br />I <br />fen�reiG S%4 +✓ n0rl'Yt4 <br />�/ <br />.rrr�rn�L Gr'., kJ" <br />2 Measure bottom elevations (see API 653 <br />Appendix B for extent of measurements). <br />i <br />a� <br />3 Does debris, vegetation, or earth contacting the <br />tank? <br />4 1 Does the site drain away from the tank? <br />I <br />5 Check operating condition of the dike drains. I <br />6 1 Inspect for cavities or erosion around the tank I <br />1.2 <br />CONCRETE RING <br />E <br />OK I NA I Comments: <br />1 <br />Inspect for spalled or cracked concrete, <br />particularly under backup bars used in butt - <br />welded annular rings under the shell. <br />j <br />! <br />2 <br />Inspect drain openings in ring, back of water <br />draw basins and top surface of ring for <br />indications of bottom leakage. <br />1.3 <br />ASPHALT <br />E <br />OK NAJ Comments: <br />I Check for settling of tank into asphalt base. <br />2 1 Look for areas of broken asphalt or where rock <br />filler is exposed. <br />1.4 <br />CATHODIC PROTECTION <br />E <br />OK NA Comments: <br />1 Identify the type of cathodic protection system <br />utilized If an <br />2 1 Review cathodic protection potential readings. <br />I <br />1.5 I <br />LEAK DETECTION <br />E JOKI <br />NA Comments: <br />1 1 Check interstitial monitoring ports for indications <br />of leaks <br />2.0 <br />SHELL <br />2.1 <br />EXTERNAL <br />E <br />10K I NAComments: <br />1 I <br />Visually inspect the shell for paint failures, leaks, <br />distortions, and corrosion <br />��ansz - a / f Q <br />2 <br />Locate leaks with dimensions on a sketch and <br />hoto ra h. <br />3 <br />Clean the shell -to -bottom joint and visually <br />inspect the bottom and shell -to -bottom weld. <br />Perform a magnetic particle examination where <br />linear indications are visually identified. <br />4 <br />1 Inspect the bottom -to -foundation seal if any. <br />I <br />5 <br />Record paint color <br />/TZ, Tff <br />6 <br />Record thickness measurements at 6 locations <br />for each shell plate in the first course. <br />7 <br />Record the bottom thickness at two places on <br />each sketch plate or annular rincl section. <br />8 <br />Record the nameplate information. <br />I do 42- <br />9 <br />Inspect and record electrical grounding of the <br />tank. <br />Z <br />9 roa an�r it Cs /e - <br />2.2 <br />1 INTERNAL <br />E <br />ICK NA i Comments: <br />! <br />1 <br />Visually inspect for grooving, corrosion, pitting, <br />and coating failures. <br />r/ <br />2.3 <br />1 RIVETED SHELLS <br />E <br />OK NA J Comments: <br />1 I Inspect rivet heads for metal loss. <br />1 <br />Revision Date: Oct2013 Page 2 of 9 <br />LTH <br />