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  • Users: Mateeng
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  1. Mateeng

    CSA Z245.1 Steel Linepipe compliance with NACE MR0175/ISO15156-2

    Hi Everbody, I came across and noted NACE MR0175/ISO 15156-2 Table A.2 considered API 5L pipes up to grade X65 material as prequalified material for SSC resistance complying with A.2.1 requirements. May we extend that to CSA Z245.1 Steel Line pipe up to Gr. 448 which has similar Yield strength...
  2. Mateeng

    Fatigue Knock Down Factor

    Hello Everybody, Just need help to establish the Knock Down Factor for a pipeline is subjecting to sour services. This factor is to be determined with a series of fatigue tests in air and simulated actual sour service. Does anybody know any lab capable of doing this test or had experience on...
  3. Mateeng

    Ring Joint gasket for FBE coated RTJ flange

    I posted this question in corrosion Forum and prefer our piping fellows see this post and advise with a recommendation. Does anybody can help find a suitable ring joint gasket suitable for FBE coated RTJ flange? We a have a FBE coated piping with Class 1500# rating and Ring Joint Flange. Metal...
  4. Mateeng

    Ring Joint gasket for FBE coated RTJ flange

    Happy Holidays, folks!!! Does anybody can help find a suitable ring joint gasket suitable for FBE coated RTJ flange? We a have a FBE coated piping with Class 1500# rating and Ring Joint Flange. Metal ring gasket like Soft Iron ring gasket may damage the FBE coating of the groove and cause...
  5. Mateeng

    Automatic welding machine for welding Nozzle to shell (Vessel in Vertical Position)

    H Welding Folks, Does anybody know any automatic welding machine vendor can perform nozzle to shell welding in position? Actually there is CS vessel with nozzle to be removed and re-welded. This shall be done on in service vessel during turnover. The vessel is in vertical position and Nozzle to...
  6. Mateeng

    NACE MR0175/ISO15156:2015, Design base

    Dear Corrosion Fellows, There is a statement in NACE MR0175/ISO15156 :2015 regarding the "load control design Method" and "Strain based design method". For strain based design method, other tests may required. My questions are: 1- What are the definition of two design method introduced in NACE...
  7. Mateeng

    NACE TM0177, FPBT at 90% AYS

    Dear folks, Did anybody have any issue with SSC test as per NACE TM0177 for high thickness plate more than 100 mm? The plate manufacturer is saying achieving FPBT at stresses 90% of Actual yield stress is not possible as per their experience. This is a NACE requirement, is that possible and...
  8. Mateeng

    material identified with or produced to a specification not permitted by ASME VIII Div. 1 UG-10

    Dear fellows, I need a clarification about ASME Sec. VIII UG-10 (a)(1). Is that a correct understanding: 1- as long as the material identified with or produced to a specification not permitted by division 1 comply with a material specification permitted by division 1 (considering clauses (-a)...
  9. Mateeng

    Dear Experts, I did post below i

    Dear Experts, I did post below in corrosion frum but n respond. May you guys shade some lights and provide your idea and experiances. SSC test as per NACE MR015/ISO 15156 is not required as long as the material comply with the requirement of Clause A.2. Table A.2 listed a few pipe material and...
  10. Mateeng

    API 5L X52 SSC test failure

    Dear Experts, SSC test as per NACE MR015/ISO 15156 is not required as long as the material comply with the requirement of Clause A.2. Table A.2 listed a few pipe material and clause A.2.2.2 Pressure vessel plates (P#1, Gr. #1 and 2) are specifically stated to comply with the Clause A.2.1. Means...
  11. Mateeng

    NACE MR0175/ISO 15156 SSC for CS weldments

    Hello Mates, I have seen and it is quite crystal clear that SSC may be applicable to Materials and well described in NACE/ISO. Any idea under which circumstances it may required for weldments and forced us to do for PQR in Sour Services. Any reference to NACE Clause is appreciated. Thanks
  12. Mateeng

    PQR Qualification Thickness range (ASME IX)

    Hi Mates, Actually I stuck with finding the answer to my question below. What is the qualified thickness range for a PQR used dissimilar thicknesses with same P No. based on ASME IX. As an example I have a PQR used two different thickness e.g. 10 mm and 16 mm. What is the max thickness range I...
  13. Mateeng

    Allowable thickness for restoring wasted wall thickness of pressure vessel

    Dear Fellows, We are in process of repairing a pressure vessel which the wall thinning has happened because of corrosion. We decided to restore the corroded area using weld buildup. I have refereed to NBC and API 510 to find the maximum thickness is allowable to be restored by buildup welding...
  14. Mateeng

    Fabrication of CRA overlay welded pipeline for Sour services

    Hi Fellows, I have two questions regarding the CS pipeline overly with alloy 825 for sour services: 1.Do we need to use CS NACE comply material (HIC and SCC tested) for base material? 2. After alloy 825 weld overlay does the pipe need to be PWHT? I did look on the NACE MR0175/ISO 15156 para...

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