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• API 653 In-Service Inspection Report <br /> for i <br /> Pacific Ethanol HMT Inspection <br /> Tank No. T-6103 August 7,2013 <br /> Stockton, CA Page 14 of 46 <br /> 4.3 SHELL <br /> 4.3.1 SHELL INSPECTION CHECKLIST <br /> ITEM EXTERNAL SHELL INSPECTION <br /> NO. COMMENTS <br /> Shell weld/seam condition. Perform shell thickness calculations(ref. Acceptable <br /> 38 API 653, Paras,4.3.3.1,4.3.4,4.3.8&4.3.10). <br /> Butt Welded <br /> 39 Record number and pattern of rivets or bolts ref.API 653,Table 4.3). N/A <br /> 40 Check exterior shell-to-bottom weld condition ref.API 653, Para.6.3). Acceptable <br /> 41 Identify all signs of product leakage exterior ref.API 653, Para.6.3 Acceptable <br /> 42 Perform Magnetic Particle testing of exterior shell-to-bottom weld(ref.API N/A <br /> 653,Para.4.3.6 <br /> 43 Coating condition(Coating failure such as blistering,thinning,cracks,or Acceptable <br /> discolored)(ref.API 653, Para.6.3). <br /> 44 Shell condition deformations,corrosion,pitting). ref.API 653, Para.4.3 Acceptable <br /> 45 Rivet condition worn,corroded, loose rivet sealer, leaking). N/A <br /> 46 Perform UT thickness readings on shell per job scope. Acceptable <br /> 47 Inspect support welds to shell for corrosion or defects. Acceptable <br /> 48 Wind girder,supports, handrail condition(corrosion,weld failure). N/A <br /> • ref.API 653, Para.4.3.7 <br /> 49 1 Note whether supports have reinforcing ads welded to shell. Reference Section 2.0 <br /> 50 Shell-mounted vents/overflow slots present. Check for debris covering N/A <br /> &condition of screens ref.API 650,App. H, Para. H.5.3.3). <br /> 51 Conduct Visual inspection of shell insulation. Inspect for damage(ref. N/A <br /> API 653, Para. 6.3.2.2 <br /> ITEM I INTERNAL SHELL INSPECTION <br /> NO. COMMENTS <br /> 52 Visual inspection of the internal shell surface for corrosion and pitting(ref. N/A <br /> API 653, Para.4.3). <br /> 53 Visual inspection of interior shell welds/seams(ref.API 653, Para. N/A <br /> 4.3.8). <br /> 54 Visual inspection of rivets(Check for corrosion pitting,or looseness and N/A <br /> riveted seams leaks). <br /> 55 Inspect support welds to shell for corrosion or defects. N/A <br /> 56 Note whether supports have reinforcing ads welded to shell. I N/A <br /> 57 j List any limitations to shell inspection.. I Acceptable <br /> . R 4 <br /> AUG 14 2014 <br /> APIRPTNE.DOT REV 2 23262868Rfi103r(Rev 1) 111620131:30 PM <br /> ENVIRONMENTAL HEALTH <br /> DEPARTMENT <br />