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T&I-. r Regional Engineering <br />LAST External Insp. .,on Ched <br />1 �I IV <br />FEB 2 5 2016 <br />LAST External Insnection Checklist chel,s,� <br />? Terminal: <br />a UT, .� <br />Tank Number: <br />i inspection Date; j <br />1,0 <br />I FOUNDATION <br />1.1 <br />1 GV,ERAL <br />E CK NAI Comments: <br />j Identify the type or' Eoundabon (concrete ring, <br />C-,ncre.-°t. <br />ij concrete slab, asphalt, crushed stone, earth, <br />I etc.) <br />I <br />2 Measure bottom elevations (see API 653 <br />{{{,,,€ <br />3 Appendix 5 for extent of measurements), <br />✓fff <br />l <br />3 Does debris, vegetation, or earth contacting the <br />i <br />tank? ( <br />I <br />4 I Des the site drain away from the tank? 1 <br />i <br />5 1 Check operating condition of the dike drains. I <br />! <br />! 6 1 Inspect for cavities or erosion around the tank 1 <br />i <br />1,2 <br />i Cot4cz. Rzrvo <br />F ICil£ I NA i'Commens-, <br />} i Inspect for spalled or cracked concrete, j <br />particularly under backup bars used In butt- <br />i <br />welded annular r in s ;ander the shell. <br />1 <br />2 Inspect drain openings In ring, back of eater <br />j <br />draw banns and top surface of ring for® <br />indications of bottom leaka' e. I <br />i <br />�13 <br />I. ASPHALT <br />E I CCK I: NA Comments: <br />? 1 Check for settfin2 of tank Into asphalt base. i <br />I <br />I'I 2 Look for areas of broken asphalt or where rock � <br />i <br />j <br />I filler is exposed. <br />! <br />! <br />1.4 <br />1 CATHODIC PRcTecrON <br />E JOK NA Comments - <br />1 Identify the type of cathodic protection system:/ <br />l utilized if anv <br />2 1 Review cathodic protection potential readings. <br />1 l <br />1..5 <br />LEAK DETECTION <br />E 10K INA Comments' <br />I interstitial monitoring ports for indications <br />i i <br />ICheek <br />of leaks <br />r <br />2.0 <br />SHELL <br />i 2.1 <br />ExTr-RNAL <br />E i <br />DK INA <br />Comments: - <br />1 1 Visually inspect the shell for paint failures, leaks, <br />I <br />I <br />distortions and corrosion <br />2 <br />Locate leaks with dirrensions on a sketch. and <br />ohotoora h. <br />I <br />3 <br />Clear, the shell -to -bottom joint and visually <br />inspect the bottom and shell-to-bottorl weld. <br />Perforin a magnetic particle examination where <br />linear indications are visually identified. <br />14 <br />Inscect the bottorn-to-foundation .sed! if aiv, <br />i ✓ ! <br />5 <br />Record 2aint color <br />6 <br />Record thickness measurements at 6 locations <br />j <br />1 for each shell plate in the First course, <br />i <br />7 <br />2eWord the bottom thickness at two places on <br />3 <br />(( <br />i <br />i eac? sketch piste or annular r'jin s@ction. <br />! <br />i <br />i B <br />Record the nameplate information. <br />a <br />l <br />j 9 <br />Inspect and record electrical grounding of the <br />,moo rc,,, "A <br />C, <br />e' <br />I <br />I tack. <br />12.2 <br />i Ir=r-E.aNAL <br />E <br />10K I NA <br />; Comments: <br />I <br />I Visually inspect ror grooving, corrosion, kitting, <br />iand coating failures. <br />9 <br />2.3 <br />1 Riv�D SHELLS <br />! E <br />10K E NA <br />Carr menl:s: <br />I <br />l 1 Inspect rivet heads for metal loss. <br />i <br />Revision Date: Oct2013 Page 2 of 9 <br />