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. API 510 In-Service Inspection Report <br /> for <br /> Pacific Ethanol HMT Inspection <br /> Vessel No. VS-6104 August 6,2013 and January 9,2014 <br /> Stockton, CA Page 5 of 29 <br /> 2.0 INSPECTION SUMMARY <br /> The following is a summary of the significant findings of the inspection. <br /> JOB DESCRIPTION: The vessel was inspected for the purpose of detecting defects in <br /> the shell, heads or nozzle appurtenances. Visual (VT) inspection was performed and <br /> covered the accessible external surfaces of the vessel. Manual Ultrasonic (UT) <br /> techniques were utilized to obtain material thickness data at random locations on each <br /> shell course. <br /> HISTORY: This is the first inspection of this vessel performed by HMT Inspection. <br /> EXTERNAL INSPECTION FINDINGS: Visual (VT) inspection found no severely <br /> abnormal conditions existing on the exterior vessel surfaces. Ultrasonic (UT) thickness <br /> measurements obtained during this inspection detected no active degradation of the <br /> surfaces inspected. Vessels supports and nozzles revealed no recordable defects. <br /> • Foundations / Supports: The vessel has two (2) steel saddle supports that are <br /> elevated and bolted to two(2) raised concrete supports. <br /> Visual (VT) inspection of the saddle supports showed no areas of recordable defects <br /> due to settlement or service-induced deterioration present. The foundation and supports <br /> are in acceptable condition at this time. <br /> Visual (VT) inspection noted random areas of minor coating failure with surface rust <br /> present. Consideration should be given to maintaining the coating as necessary to <br /> minimize corrosion. <br /> Shell: Visual (VT) inspection of the tank shell noted random areas of minor coating <br /> failure with dirt stains and rust present. This condition does not affect the overall <br /> integrity of the tank. This is provided as information only and consideration should be <br /> given to monitoring and maintaining the tank coating as necessary. <br /> The shell, welds and appurtenance welds were found in acceptable condition based on <br /> Visual (VT) inspection. <br /> Ultrasonic (UT) testing of the tank shell revealed a minimum remaining thickness of <br /> 0.501 inch and an average thickness of 0.514 inch. The nominal thickness of the tank <br /> shell (per data plate) is 0.500 inch. RECEIVED <br /> AUG 14 2014 <br /> NDERPTNE.DOT REV 2 23262666 Tank VM104(Rev 1) 1/14/2014 1:20 PM <br /> ENVIRONMENTAL HEALTH <br /> DEPARTMENT <br />