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• API 653 In-Service Inspection Report <br /> for <br /> Pacific Ethanol HMT Inspection <br /> Tank No. T-6102 August 6,2013 <br /> Stockton, CA Page 13 of 46 <br /> 4.2 BOTTOM <br /> 4.2.1 BOTTOM INSPECTION CHECKLIST <br /> ITEM NO. BOTTOM INSPECTION COMMENTS <br /> 17 Record minimum bottom plate thickness requirements(ref.API 653, N/A <br /> Para.4.4.5). <br /> 18 MFL scan of accessible bottom plates. Quantify all findings(ref.API N/A <br /> 653, Paras.4.4.4&4.4.5 <br /> 19 Visual inspection of bottom plate surface condition(ref.API 653, Para. N/A <br /> 4.4.1 <br /> 20 Conduct Ultrasonic thickness readings of bottom plates. Record all N/A <br /> data ref.API 653, Para.4.4.4). <br /> 21 Locate unacceptable voids beneath bottom. Record the locations(ref. N/A <br /> API 653, Para.4.4.2.h&j)(ref.API 653, Para.9.10.2.1.3). <br /> 22 Visual inspection of bottom plate lap welds(for reportable indications N/A <br /> or other anomalies)(ref.API 653, Para.4.4.2,/Fig.9.1). <br /> 23 Perform Vacuum Box testing of bottom lap welds. N/A <br /> 24 Shell-to-bottom weld condition ref.API 653, Para.4.4.2 . N/A <br /> 25 Perform Magnetic Particle testing of internal shell-to-bottom weld. N/A <br /> 26 Perform Vacuum Box testing of internal shell-to-bottom weld. N/A <br /> 27 Identify all signs of product leakage. N/A <br /> Reinforcing pads present under all clips,brackets and supports/ N/A <br /> 28 condition(ref.API 650, Paras.5.10.4.7/ H.4.6.7),(ref.API 653, Para. <br /> 9.10.2.2). <br /> 29 Floating roof leg striker plate condition(pitting,cutting,and dimpling). N/A <br /> 30 Fixed roof column bearing/base plate condition(corrosion,weld N/A <br /> failure). <br /> 31 Fixed roof column lateral clips(align tank columns)(ref.API 650, Para. N/A <br /> 5.10.4.7 <br /> Conduct Visual inspection of reinforcing,bearing, base,striker plates N/A <br /> 32 and existing lap patches(ref.API 653, Paras.9.10.1.2,&9.10.3&Fig. <br /> 9.9 <br /> 33 List any limitations to bottom inspection. N/A <br /> ITEM NO. SUMP INSPECTION <br /> COMMENTS <br /> Describe sump type/condition(Modified,false bottom, dish/bowl, N/A <br /> 34 etc.)details to include physical dimensions(ref.API 653, Paras.4.4.2, <br /> 9.10.1.5&C.2.3), ref.API 650,Table 5-16b&Fig.5-21). <br /> 35 Perform Visual inspection of the sum (including all sump welds). N/A <br /> 36 Perform Magnetic Particle testing examination on all sump welds N/A <br /> (including sump-to-bottom weld). <br /> 37 Perform Sump UT. Record lowest UT reading per grid in sump UT N/A <br /> form. <br /> RL <br /> • AUG 14 2014 <br /> APIRPTNE.DOT REV 2 23262868(TE102r(Rev 1) ENVIRONMMAY"HEALTH <br /> DEPARTMENT <br />