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Recent content by John Jones

  1. John Jones

    ASME B31.3 EN 13480 Flange Bolting

    Edstainless no they are not. Tensioning vs torque raised its head.
  2. John Jones

    ASME B31.3 EN 13480 Flange Bolting

    Hi Guys, Recently I am encountering some disputes on flange management and the correct values for tourque, tensioning. Some people want to go off the gasket rating. Others want to go off 70% of the yield stress of the bolt. Other than ASME PCC-2, what are peoples thoughts on this?
  3. John Jones

    WPS/WPQR 304/316

    Hi all, As per 15614-1, will a WPQR done with 304 base material, cover welding 316 base material. 316 filler wire used.
  4. John Jones

    Material Brittle Transition Curve - Cert vs Client

    I suppose I would be referring to piping, built to B31.1 but in Europe so the European Pressure Equipment Directive applies. Ed Stainless... Even if the requirements of the construction code and the Directive were met, and it was the clients specification called for the the lower temperature...
  5. John Jones

    Material Brittle Transition Curve - Cert vs Client

    Hi Guys, I'm wondering if someone could help me through a hypothetical situation.... A piping material is ordered, and on the material cert it states that it has been impact tested at -20 Degrees Celsius. The client specification requires material to be impacted tested at a minimum...
  6. John Jones

    PED Design Pressure vs MAWP

    Hi, As per the European Pressure Equipment Directive... If a piping assembly is designed for example to 30 bar ( Example category 2), but the max operating pressure shall be limited to less than 5 bar (Example Category 1)by PRVs, where does this leave the manufacturer with regards to the use of...
  7. John Jones

    FFS Dent in Stainless Spool

    Hi guys, I have an SS sch10 24" that has reached commisioning stage. There is a dent in a section of pipe which is causing issues. Does anyone have experience in fitness for service analysis of such situations? It would be extremely troublesome for all involved if this spool had to be removed.
  8. John Jones

    QA career advancement

    Hi Durjati Sen, Do you have any project quality assurance courses you would recommend?
  9. John Jones

    Piping out of roundness

    Hi Little Inch, Photos not possible, offical photos ect. It's a lenght of stainless with a sharp impact. I was thinking of a form of damage replication. Get a similar spool and dent it in the same manner. Then hydrotest it, PT and X ray it.
  10. John Jones

    Piping out of roundness

    Installed and messing up commisioning with disagreements.
  11. John Jones

    Piping out of roundness

    Does anybody have practical experience on out of roundness of piping assessments? A damaged/ dented stainless pipe is causing some issues. The design code is ASME B31.3
  12. John Jones

    Date of introduction of PSL2 in API5L pipeline standard

    What exactly is the purpose of ISO 3183?
  13. John Jones

    QA career advancement

    Hi, I am a Mechanical QA/QC with CWI, painting,API, NDT certification. I was wondering if there is any certain areas where people think QA/QC personnel should improve/increase there knowledge. For example are there areas that design/ construction engineers find that the QA/QC personnel are...
  14. John Jones

    EN 1090-2 Bolt Reports

    Hi, I am wondering if a formal report on preloaded bolt post tensioning is a requirement for EN1090-2?
  15. John Jones

    Structural Steel and split/spring washers

    I'm reviewing EN 1090 and all related specifications relating to bolting. I have come to the conclusion that split/spring washers are not permitted by the standard yet I frequently come across structural steel with these washers. I'm wondering has anyone here come across this before or does...
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