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  1. mjsamman

    scoring lines on shaft

    Hi for All, What is the best practice should be done if we noticed Lot of lines and scoring marks observed on the shaft. as attached picture. Do we have to make more investigation for the reason and collect information or this is a simple finding and no more action required just to make...
  2. mjsamman

    Main steam pipe failure ( crack)

    Dear All, thank you all for great speculations and investigation. the pipe now is repaired temporarily and has to be replaced for the nearest time.(attached video) I'd like to add some operation data: - this line is located before entering the HP turbine - before a week from the failure...
  3. mjsamman

    Main steam pipe failure ( crack)

    What could be the cause of the attached picture and video. This high pressure and temperature pipe of the main steam line to turbine. Press. 170 bar Temp. 540 DEGREE C...
  4. mjsamman

    Vertical pump horizontal movement

    Thank you Artisi for your valuable recommendation. We will go for it. Regards
  5. mjsamman

    Vertical pump horizontal movement

    thank you all for your interaction I have attached a sectional drawing for this pump. The shaft material is Duplex stainless steel and pumping medium is sea water. Note: the pump was overhauled since two years so it is impossible for the sleeve rubber bearing got damaged unless abnormal...
  6. mjsamman

    Vertical pump horizontal movement

    While inspection of our vertical propeller axial flow pump, we observed that the impeller is moving when we push it. (Video attached) Do we have to dismantle the pump completely to check the sleeve bearing for any abnormal gap or there is another test we can do it. The shaft hight is about 10m...
  7. mjsamman

    burst HsSo4 storage tank

    Dear MJCronin Down here you'll find the answers of your question [highlight #73D216](check attached file)[/highlight] What type of tank is it ? "Flat bottomed" API-650 type ?? ASME VIII DIV.1 Ed. 2001 ADD 2003 Can you take some pictures ? Attached Did the tank burst because of overpressure...
  8. mjsamman

    burst HsSo4 storage tank

    we have a burst HsSo4 storage tank of about 93 % concentration. is it better to replace the tank or make new patch plate in the place of the burst. is there any standard to convern this problem thanks
  9. mjsamman

    procedure for Cutting, welding and purging of hydrocarbon pipe

    HI I need the procedure for Cutting, welding and purging of hydrocarbon pipe line and which standard shall I follow, please
  10. mjsamman

    Boiler Tubes Failure

    thread794-252410 Tube Failures If any water or steam carrying tube fails, the best shutdown method will be dictated by the size of the failure, the ability to maintain a normal water level and the demand for the unit to remain in service. The following instructions are general since most of the...
  11. mjsamman

    AWS/ANSI F4.1 standard

    Dears, Any body has the standard of AWS/ANSI F4.1 (Safe Practices For The Preparation Of Containers And Piping For Welding, Cutting, And Allied Processes. Actually, I want to cut an oil pipe but I want to know the procedures and precaution to do so. If someone can help me to get this standard...
  12. mjsamman

    replacing fuel line standard

    Thanks Mr. Sen, actually, I went through All ASME concerning piping but I did not find any statement or specific procedure and precaution on how to replace old hydrocarbon piping. regards
  13. mjsamman

    replacing fuel line standard

    Hi All, when repairing or replacing new fuel line, is there any precaution to cut the old line?. which standard shall I refer to? General speaking: what preparation shall be done to cut fuel line? regards
  14. mjsamman

    new pipe installation (heavy fuel)

    Dears, which standard to govern installation of new hydrocarbon pipe (heavy fuel line). is it feasible to install this line with flanges or better to butt weld joint? regards
  15. mjsamman

    pipe assessment / survey procedure

    Dear mk3223 All pipes are inside the trenche with but covered with concrete slabs with sleepers under all pipes. But still want to know for any further test to examin the healthness of the pipes
  16. mjsamman

    pipe assessment / survey procedure

    Hi All, Just one straight inquiry: How to make assessment/survey for bundle of pipes for different fluid (i.e. heavy fuel, diesel, oily water and waste water) and schedule located in one trench? We want to know the recommended practice to evaluate the healthiness of our pipes in the plant. Do...
  17. mjsamman

    Feasibility of GRP lining to be applied on steel ducting

    Dear All, We have steel ducting system coated internally with core-flake material and lined with modified PTFE. Due to some budgetary and time concern, we want to apply GRP lining internally to some portion of the duct. My question is: - The feasibility of GRP to be applied on the duct - The...
  18. mjsamman

    pitting in the impeller (vertical pump)

    Dear All, I have an issue of an impeller of the following specification: - [highlight #8AE234]pump type:[/highlight] vertical mixed flow pump - [highlight #8AE234]rotation speed:[/highlight] 355 rpm - [highlight #8AE234]impeller:[/highlight] (Dia. 1485 mm) , Material: Gr.1 A CD-4MCu , Standard...
  19. mjsamman

    repairing a hole in a pipe

    Thanks for all those who replied but I think clamping solution is not practical one because as I told you that the diameter of the pipe is about 2 m. Moreover, I want a permanent repair since the unit is under annual maintenance so we have plenty of time. So, is it practical to grind the hole to...
  20. mjsamman

    repairing a hole in a pipe

    Hi all, a pipe of 2 m diameter (Carbon Steel) and thickness 1 in, the flow of sea water and pressure max 2 bar. We found a through-hole of about 2 in diameter under the coating. My question is: What is the recommended practice to repair such a problem like this? regards

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