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  • Users: kalamani
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  1. kalamani

    Maximum Allowable patch size of the Shell API653

    Hi every one Recently we inspected a internal floating roof tank and found that at 6 Feet from Bottom of the shell height all around the circumference a band of 36 inch width on shell was found pitted and corroded, Upon sand blasting several holes were found in this locations. This tank was...
  2. kalamani

    Cone bottom Tank applicable code

    Hi WE found while hydrotest of two cone bottom tanks deformation of the skirt holding the cone bottom. The code API620 which is applicable to these tanks doesnt spell out clearly the acceptance limit of the skirt out of roundness. API650 states the limits of the "out of roundness". Comment...
  3. kalamani

    API 650 tanks manway Nozzle neck

    Dear all Please clarify the NDT requirement of the longitudinal seam with Double groove in Manway neck not flush type ( 24" ,30") as per API650. I Understand that the manway nozzle necks plate thickness are selected only from table 5.3 & 5.4 and no joint efficiency plays the role as simmilar...

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