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API 653 In-Service Inspection Report <br /> for <br /> Pacific Ethanol HMT Inspection <br /> Tank No. T-6106 August 8,2013 <br /> Stockton, CA Page 6 of as <br /> SUMMARY AND REPAIR RECOMMENDATIONS (CONT'D.) <br /> SHELL(CONT'D.): The shell coating is lightly weathered and is starting to show signs of <br /> chalking. The coating is intact and no areas of failure which expose the carbon steel <br /> were noted. There is product residue on the shell plates. Consideration should be given <br /> to properly cleaning product residue and monitor coating integrity. <br /> The next external API 653 inspection should be conducted within 5 years and no later <br /> than April 2018 (ref. API 653, Para. 6.3.2.1). Complete API 653 out-of-service inspection <br /> prior to this date would supplement the next external inspection requirement. <br /> Shell Ultrasonic (UT) testing should be conducted again within 15 years and no later <br /> than April 2028 (ref. API 653, Para. 6.3.3.2). Complete API 653 out-of-service <br /> inspection prior to this date would supplement the next external inspection. <br /> NOZZLES AND APPURTENANCES: Visual (VT) inspection and Ultrasonic (UT)testing <br /> of the nozzles and manway were performed. <br /> Shell Nozzles E, C, E, F, H and I do not have reinforcing plates. Visual (VT) inspection of <br /> these appurtenances found them in acceptable condition. This is provided as information <br /> only and no corrective action is required at this time. Consideration should be given to <br /> installing seal welded reinforcing plates next time major repairs are made to the tank. <br /> All existing shell nozzle reinforcing plates do not meet the minimum thickness required <br /> by API 650, Para. 5.7 and Figure 5-7b. These details have been present for an <br /> extended period of time with no issues noted and no corrective action is required at this <br /> time. This area should be monitored in future for signs of accelerated corrosion due to <br /> possible increased stress concentrations. <br /> Shell Nozzle H has an elevation from the center of the nozzle neck to the bottom edge <br /> projection that is less than that required by API 650, Para. 5.7 and Figure 5-8. These <br /> details have been present for an extended period of time with no issues noted and no <br /> corrective action is required at this time. This area should be monitored in future for <br /> signs of accelerated corrosion due to possible increased stress concentrations. <br /> Nozzles E, F, H, I and J do not meet the minimum neck thickness requirements of API <br /> 650 (ref. Table 5-6, Column 3). These details have been present for an extended period <br /> of time with no issues noted and no corrective action is required. This area should be <br /> monitored in future for signs of accelerated corrosion due to possible increased stress <br /> concentrations. <br /> RL- . ,,JE11VED <br /> Mar, e ��14 <br /> API RPTNE.00T REV 2 23262868ff-610Er(Rev 1) 11161201 1:- <br /> ENVIRONMENTAL HEALTH <br /> DEPARTMENT <br />