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weld procedures per API 653 guidelines.Vacuum Box(LT/BT)testing should be performed on the patch plate welds.Fiberglass should then be re-applied over these patch plates prior to returning the tank to service." b. The next formal external API 653 Visual(VT)inspection should be conducted within 5 years and no later than May 2016-provide copy of this linspectionL Commented[BRDS6]:Tank 16(bladder tank)Do you 6. ST-17:Inspection report dated APRIL 28-30,2014(OUT-OF-SERVICE INSPECTION REPORT) have this report? a. Corrosion rate calculations based on this inspection information and the age of the Commented[BRDS71116]:2021 report attached to the bottom(19 years in service)results in a next inspection cycle recommendation of no bottom. more than 5 years if the above repairs are conducted before the tank is returned to service.If thin-film epoxy coating is applied to the bottom before the tank is returned to service,the next internal inspection cycle would be no more than 10 years.This interval is based on the expected life of this coating meeting or exceeding this period(ref.API 653,Para.6.4.2).-were the recommended repairs conducted before the tank was returned to service,was the epoxy coating applied?Provide 5-year inspection report if no epoxy coating was lappliedl. Commented[BRDSB]:Epoxy report attached at the 7. ST-18:Inspection report dated MARCH 23,APRIL 11,19&MAY 1,2012(OUT-OF-SERVICE bottom of this summary. INSPECTION REPORT) a. The tank is not grounded.A survey should be conducted to determine the ability of the tank to discharge static electricity and,if found unacceptable,a suitable grounding system should be installed.-provide survey l opy Commented[BRDS9]:Do you have this survey 8. ST-19:Inspection report dated March 9,2011 to March 11,2011[OUT-OF-SERVICE mentioned? INSPECTION REPORT) Commented[BRDStOR9]:Grounding not required on a. Install 5 lap patches on the floor plates to repair soil side corrosion and 1 lap patch to tanks over 20 feet diameter.see attachment below. repair a product side pit as shown on the drawing and painted white on the floor plates for a 5 year run. b. Install 7 lap patches on the floor plates to repair soil side corrosion and 1 lap patch and puddle weld 30 pits to repair product side pitting as shown on the drawing and painted yellow on the floor plates for a 10 year run. c. Install 22 lap patches on the floor plates to repair soil side corrosion and 1 lap patch to repair product side pit and puddle weld 664 pits to repair product side pitting as shown on the drawing and painted blue and yellow on the floor plates for a 20 year run. d. Install a U-bolt on the bottom draw line on H support next to the sump so the line will rest on the support. e. Modify the inlet diffuser so it rest on its support. f. Modify the outlet tub so it rest on its support. g. Replace the secondary seal. h. Remove the floating roof center gauge funnel and blind or remove the nozzle. i. Grind out and re weld the 6 broken stitch welds on the center column marked with white grease pin. j. Replace center columns slide plate hatch seal. k. Replace the slide plate seal on the gauge pole and its side ladder. I. Monitor the 3 shell deformation on the 2nd course just above the first to second circumferential weld and above the door sheet on the west side of the first course during next external inspection.