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  • Users: nabeel3
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  1. nabeel3

    What type of Corrosion

    Greetings What type of corrosion is this? Pitting or General corrosion or Carbon steel Deminilarised Insulated Water Tank. This is found after removing insulation. tank Tank is near to sea .
  2. nabeel3

    API 650_Polygon shape for Bottom plate

    Hello Seniors, According to API 650 Section 5" The ring of annular Plates shall have a circular outside circumference, but may have a regular polygon shape inside the tank shell, with number of sides equal to the number of annular plates." is this clause(number of sides equal to the number of...
  3. nabeel3

    which valve is it

    Dear All Which type of Valve is this? Combined Potable & Fire water Tank outlet ,14 inches dia . No drawings available.
  4. nabeel3

    Tank Bottom Bevel

    Dear All Is it required that for an 8 mm new bottom plate replacement over existing plate shall have full penetration weld to the shell plate. I mean is a bevel required in the shell plate . All bottom plate to be replaced. Plate is A36. API code .
  5. nabeel3

    Corrosion Test for Nickel Alloy 825

    Dear All In continuation to the following thread, https://www.eng-tips.com/threads/welding-procedure-qualification-standards-for-stainless-steel-for-corrosion-resistance-service.518896/post-8988507 Is it required to do any corrosion test for Welding Alloy 825 pipes for 95% concentrated...
  6. nabeel3

    Sequence Back Weld

    Dear All Our Company is planning to start welding for 12 mm shell in a carbon steel A 36 Tank. For getting complete penetration we have to do back gouging and weld. After how many pass in the front side shall we back gouge and do back weld. This question arises due to consideration for welding...
  7. nabeel3

    Bottom plate Replacement_Heat Traetment

    Dear All My company got a Tank Job , Carbon steel Water Tank , to replace the existing Bottom plate . We plan to cut one existing shell to remove and insert the new bottom plate. Is stress relief heat treatment required after welding the shell . Is it depend on the shell thickness
  8. nabeel3

    Flush type opening in API 650 Tank

    Dear All Is it Mandatory to provide a Flush type shell Man way opening or a flush type clean out fitting in a API 650 tank? Also, what is the purpose of thermal stress relief in such a connection (Section 5.7.4)
  9. nabeel3

    Jump over piping

    Dear All what is a Jump over piping? Example:- Jump Over for Pump Suction line (16” size)
  10. nabeel3

    Tank Horizontal joints

    Dear Experts Para 5.1.5.3 of 2020 Edition says "Unless otherwise specified, abutting shell plates at horizontal joints shall have a common vertical centerline". I am trying to understand it, but my relatively little experience in Tanks makes it difficult to understand. Any good Samaritan can...
  11. nabeel3

    ASME Sec 9, QW 451.1 and 451.2

    Dear Experts, In ASME Sec IX QW 451.1 is for the Transverse bend test and 451.2 longitudinal bend test. How can we decide when I have a specimen of thickness "t" which bend test is to be performed?
  12. nabeel3

    Pump Anchor Bolt

    Dear All This is a general detail for a Pump foundation anchor bolt. Is it required to fill concrete between pipe sleeve and anchor bolt in the below detail? This detail is from Hydraulic Institute standard HI-14.4
  13. nabeel3

    Multiple Electrodes in a WPS

    Dear All Can I mention multiple Electrodes in a Pre-Qualified WPS in accordance with AWS D1.1
  14. nabeel3

    Different BCD for Valve flange and Pipe

    Dear All I have a situation as below in my work now. Replace an existing MOV (Gate Valve) size 4 inch with a new Super duplex MOV in a seawater line of 4 inch GRE piping. Bolt circle Dia of Pipe flange is 190.5 mm ,Rating Class 150 BCD of new Valve is 180 mm, Class 150. How to connect...
  15. nabeel3

    Submersible pump

    Dear All What are the possible mechanical damages for a centrifugal submersible pump operating in a condition with lesser than the minimum water level, daily 2 hours approximately possibly for two-three months continuously
  16. nabeel3

    TKY Welds

    Dear All Can TKY joint welds as per AWS D1.1 be considered as Fillet welds.
  17. nabeel3

    Purge Gas For SMAW

    Dear All I am trying to develop a WPS for Super duplex UNS32750 Tube material, Sch 40, One and a Half inch size. Using Electrode E2594-16 is it required to use purge gas? . Process SMAW. Data sheet...
  18. nabeel3

    API Inspector Re certification CPD Hours

    Dear API Inspectors My API 570 Certificate is expiring in 2023. As per new API guidelines I need 16 CPD Hours to renew my certificate. Can anyone recommend some online programs wherein I can attend and gain the necessary points?
  19. nabeel3

    Pump Max Pressure and Max Head

    Dear All I am using a pump with the following Data sheet and Pump curve. When I asked the following question to the Vendor "From datasheet the Max Pump pressure is given as 25 bar. As per the Pump curve, the max pressure is 8 bar approximately. Can u please clarify" His reply is as...
  20. nabeel3

    Buckling

    Following is a Exam Question. What is the correct answer Buckling of a Member depends on which of the following a) Ductility b) Geometry c) Yield strength or(Point) d) Tensile strength

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