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  1. MATEGRITY2009

    In-service flare tip inspection

    Can anyone recommend the in-service flare tip inspection code or recommended practices for reference? I’m going to prepare the company inspection procedure for the flare tip but cannot find any reference standard or code. Thanks for any help
  2. MATEGRITY2009

    Leak of Stainless steel plug, Material defect??

    In what country was the plug manufactured ? The material supplier is in the USA. What is the ASTM/ASME material standard that the plug was supposed to be manufactured to ? Material spec. in PO is SA-479 316L
  3. MATEGRITY2009

    Leak of Stainless steel plug, Material defect??

    Hello everyone, Problem: The new plug of the air cooler heat exchanger made from stainless steel leaked during the leak test. The plug was new and never used. The defective plug was sent to be tested using PT and PAUT and it found the defect at the center and along the entire length of the plug...
  4. MATEGRITY2009

    Which area is the cross-sectional area change of LRUT

    Hi anyone, Refer to ASTM STD of LRUT, the CSC meaning is.. "cross-sectional area change (CSC)—the change in the circumferential cross-section of pipe from its nominal total cross-section, usually given in percentage" My question is the CSC is calculated from the cross-section area of the...
  5. MATEGRITY2009

    MFL Field Verification with UT C-Scan.

    As you already knew MFL is a Screening tool and it has a lot of limitations eg. pipeline cleanliness, a sensor to wall distance, magnetic interference etc. which can make the data deviation. if all UT parameters are set correctly, it will give you a more accurate result better than the MFL result.
  6. MATEGRITY2009

    NDE to detect corrosion under riser clamp

    Hi everyone, refer to MFL pigging inspection result, the pipeline found 30% wall loss located at under rider clamp area and the RWT is less than the require thickness of ASME B31.8. As you already knew the MFL is screening NDE method so, the problem is how we can inspect and confirm the exact...
  7. MATEGRITY2009

    Flexible hose inspection requirement

    Hi, We facing with the problem of How to inspect in-service flexible hose in oil & gas industry and acceptance criteria in case of hose minor damage eg. Crack at outer rubber cover, slight corroded on metal wire brided etc. My question is; -Is there any reference Code, guideline or standard...
  8. MATEGRITY2009

    In-service inspection of rubber/ metal flexible hose

    Hi, We facing with the problem of How to inspect in-service flexible hose in oil & gas industry and acceptance criteria in case of hose minor damage eg. Crack at outer rubber cover, slight corroded on metal wire brided etc. My question is; -Is there any reference Code, guideline or standard...
  9. MATEGRITY2009

    Test separator, Allow water leak to condensate section

    Hi anyone Refer to attached photos for internal condition of test separator, the weir plate design of condensate section is to install by bolt joint, so the leak-tightness look impossible. i leak test with full water fill and a lots of leak was observed at each bolt location. my questing is...
  10. MATEGRITY2009

    AL fin severe distortion

    We clean it during plant Shutdown, so exchanger temperature will be at ATM around 29 - 33 C.
  11. MATEGRITY2009

    AL fin severe distortion

    This exchanger is placed on the Platform, Offshore installation and cleaned by HP water in some shutdown period. (Very rare) I will check with production team for the exact cycle of thermal cyclic.
  12. MATEGRITY2009

    AL fin severe distortion

    Thank you for all advice. Chicopee and Ron; We can confirmed that this is not caused from accident. from the day one of operation it look very good condition and then 9 years of operation it look like in the picture. Edstainless: Now, we try to verify the type/ grade of AL fin to find the...
  13. MATEGRITY2009

    AL fin severe distortion

    Now, we found severe distortion at AL fin of finned tube of the air cooler heat exchanger. (In my experienced, i'm never found this problem before) Is this cause by heat that exceed AL temperature limit? Anyone experience this issue, please advise. Thanks for any help...
  14. MATEGRITY2009

    HEX tube wall loss and plugging

    Now, We found tube wall loss at 40-50% of nominal thk (tube corrosion rate is 0.165 mm/year) and then I'm trying to search the criteria for maximum allowable wall loss of tube (Shell & tube HEX) before plugging. anyone experienced or know the reference criteria or rules of thumb please advise...
  15. MATEGRITY2009

    Stain from Fireproofing crack

    Hi all, During PFP vessel survey we found this stained from cracking on PFP and PEC test over the cracking PFP and nearest section found no corrosion under fireproof. Anyone experience this problem, please advise. for me it look like some grease but i'm not sure this is from fireproof build...
  16. MATEGRITY2009

    Hex bolt VS Studbolt

    Hi everyone, Could somebody explain/advise me as following detail: -Why Hex bolt is not widely use in Oil & Gas industries? What is the reason that limit or restrict to use the Hex bolt ? -When refer to API 570 & 510, Is it state any objection to use the Hex bolt? -Any advantage and...
  17. MATEGRITY2009

    Acceptance criteria for Corroded flange facing

    Thank you all guys, Now, we found ASME PCC-1 Appendix D. Let discuss, since ASME PCC is designed for PE that it has been placed in-service but it look more conservative for me. What do you think about this Appendix D? Thanks
  18. MATEGRITY2009

    Acceptance criteria for Corroded flange facing

    Hi everybody, Now, we encountered with internal corrosion at Valve that damage the facing of flange as attached photo's but the problem is We can not find the Reference code or recommend best practice for Acceptance or Rejection these valve due to gasket contacting surface was corroded. anyone...
  19. MATEGRITY2009

    SWPSs, Standard Welding Procedure Specification?

    Thanks to all, i have read 2013 ED of ASME IX and it cleared now.
  20. MATEGRITY2009

    SWPSs, Standard Welding Procedure Specification?

    Hi Anyone, Already read in ASME IX but don't understand. Looking for some advise about SWPS, What is the code concept ? Is it like a AWS D1.1 Prequalified list? Thanks for any help
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