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  1. tankinspector88

    Patch plate bigger than manhole

    thickness: 6,35mm patch plate size: 780 X 580 (mm)
  2. tankinspector88

    Patch plate bigger than manhole

    Hi guys... I have to weld a patch plate on a API650 tank bottom and this patch is bigger than the manhole. May I cut this patch in the middle, weld both parts inside the tank and than weld on the tank bottom?
  3. tankinspector88

    Deformation on API 650 tank bottom

    Do you know the section?
  4. tankinspector88

    Deformation on API 650 tank bottom

    How can I evaluate if I need to replace a deformed bottom plate? Its a 12m long carbon steel plate and in some points MFL stucked because the deformation.
  5. tankinspector88

    Bottom projection of a API650 tank

    I convinced them to carry out the repair. A ring of annular plates will be installed.
  6. tankinspector88

    Bottom projection of a API650 tank

    I have a tank with the bottom projection corroded in the whole perimeter. As you guys can see in the pictures, a lot of areas below the retirement limits. API653 says: 4.4.5.7 Unless a stress analysis is performed that considers future corrosion until the time it can be inspected, repaired, or...
  7. tankinspector88

    Weldability of a API-650 tank constructed in 1980

    The tank was already inspected per 653, new bottom and new ring was the recommendation. I'm worried about mixing new and old plates because I had bad experience welding patch plates in old tanks. The material seemed to crumble. Thanks for you answer!
  8. tankinspector88

    Reference material for API 650

    Any good recommendation for online course about tank design?
  9. tankinspector88

    Weldability of a API-650 tank constructed in 1980

    In the terminal I work we have a couple of tanks in need to be reconstructed, new bottom and in some we need to also substitute the first ring. These tanks are operating more than 40 years, I'm worried about the weldability of the new plates with the old one. Anyone can indicate a test or a...
  10. tankinspector88

    Jobs for API-653 around the world

    I'm brazilian certified on API-653 looking for jobs outside Brazil. Obviously, the first option its USA, but I see that Middle East also has a good market. With only the 653 certification I will be able to have a position or do I need another API certification or a ASTN certification?
  11. tankinspector88

    Maximum specific gravity for API tank and minimum thickness for stainless steel API tank

    Oh sorry... API-650. No especific range., I just need to know what is the maximum SG for the case we need to storage a product with a higher SG. I'm also always calculating the maximum fill height, for the case of a different product. Thanks for your answer. Thanks for your comment.
  12. tankinspector88

    Maximum specific gravity for API tank and minimum thickness for stainless steel API tank

    Yes... it is an existing tank. Mostly of our tanks are multipurpose, sometimes we change the storaged product. The first one was really a dumb question, already solved, thanks. The second I already found on 650. Thanks again.
  13. tankinspector88

    Maximum specific gravity for API tank and minimum thickness for stainless steel API tank

    Hello everyone! I need some help with two topics about API tanks. 1) What is the formula to calculate the maximum specific gravity I can store on a tank? I only find minimum thickness and hydrotest height. 2) Where I can find Maximum Allowable Shell Stresses for stainless steel to calculate...

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