Phased Array interpretation – pressure vessel

  • Phased Array interpretation – pressure vessel

    Posted by leo on 27/11/2021 at 8:16 pm

    Dear Experts,

    Following a phased array inspection of a desalter vessel we have discovered a band of mid-wall indications, this band of non-continuous defects are measured at a depth of approximately 15mm to 20mm from the external surface of the vessel .

    There are also some others localised inclusions of approximately 1 to 5 mm Ø which are located approximately at 4 to 5 mm from the internal surface of the vessel. The same defects are present throughout the wall of the vessel.

    My questions are :

    Has anyone faced the same situation during the inspection of a desalter vessel and has an idea about the nature of these indications ?

    Is that these defects can propagate and grow whilst the vessel is in service?

    If someone has a good knowledge of this process, what are the others types of defects in addition to the corrosion that can occur on such a vessel when is in service for more than ten years ?

    Thank you in advance for your help.

    Best regards

    caleb charles replied 5 months, 3 weeks ago 2 Members · 1 Reply
  • 1 Reply
  • Pressure vessel and boiler inspection

    caleb charles

    28/11/2021 at 4:52 pm
    1 Point

    Get a C scan in order to check its length x width, all indications are midwall and it is a band of certain area, normally lamination or inclusions are restricted in small portion , lots of factors to be considered for confirming it to be HIC or not, thats why i asked first check susceptibility