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  1. MechEngCCGT

    Repair of HP steam pipeline - Welding procedure

    gtaw, your comments are welcomed. Regarding them: Nobody ask anything, everyone was limited to "you cant do this" "dont do that" etc etc Hell yea I can do that in a forum! Telling everyone else that dont know what they are asking for in the first place.... where is the reason in this? I really...
  2. MechEngCCGT

    Repair of HP steam pipeline - Welding procedure

    DekDee, it seems that you have time to waste my friend and I really do not. So if you want to help a bit do it if you dont please be on your way. To answer by the way to your last comment, this was in a nutshell lines from the WPS not written by me but by a company dealing only with weldings...
  3. MechEngCCGT

    Repair of HP steam pipeline - Welding procedure

    Thank you DekDee for your answer, if you pay a closer attention you will see that I wrote the HP abbreviation so I dont understand your comment really. Overlook was a way of speaking. I am not trying to gain education I am trying to aquire targeted knowledge from people with experience in this...
  4. MechEngCCGT

    Repair of HP steam pipeline - Welding procedure

    Metengr, can you please provide me with those items that you think are missing from this general procedure description. For example material to be welded. When you say NDT? Can you please be more specific as this is not my area of expertise. Why do you say more than VI where do you base your...
  5. MechEngCCGT

    Repair of HP steam pipeline - Welding procedure

    Also do you thinkthis procedure is acceptable: 1. Preheat at 300 degC 2. Tack welding 3. Preheat 800 degC 4. Complete welding 5. Visual inspection acc. to ASME sect. V Any comments on the prolonged?
  6. MechEngCCGT

    Fire Zone Classification

    Thank you guys, I ll have a look in NFPA 72. Regards
  7. MechEngCCGT

    Repair of HP steam pipeline - Welding procedure

    Duwe6, thank you for your help. Can you refer me to the approx. paragraph of B31.1 for this process? (if there is one of course cc to your experience) Do you have or you are aware of a welding description for this so I can have a look at? Thanks
  8. MechEngCCGT

    Repair of HP steam pipeline - Welding procedure

    Dear All, I have this issue in a combined cycle power plant (CCGT) that I am currently working on where the HP steam pipeline has to be rectified - repaired. Welding will be used, so I was wondering if someone can provide some info on the relevant procedure, applicable codes - standards etc so...
  9. MechEngCCGT

    Fire Zone Classification

    stookeyfpe I am asking because I want to know the following: 1. First off all can all these locations be classed as one fire zone? 2. Should all the floor and the ceiling be fire resistant and if yes for how long and acc to which standard? I apologise in advance this is not my area of expertise...
  10. MechEngCCGT

    Fire Zone Classification

    Dear All, I have the following question: In a combined cycle power plant (CCGT) in the control rooms (DCS) smoke detection system exist in: - Under the raised floor - In the working area - Above the false ceiling Can these locations be classed as one fire zone or has the floor and the ceiling...

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