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Recent content by leont

  1. leont

    Hi Everyone, Can somebody from thi

    Hi IRstuff, The pump was stuck, It was not able to rotate easily as expected. Is there any standard or best engineering practice that may help? Regards
  2. leont

    Hi Everyone, Can somebody from thi

    Hi Everyone, Can somebody from this forum provide me with some guidelines for preservation plan for a 2 stages liquid ring vacuum pump. I assume, it can be pretty much the same preservation plan for any type rotating equipment. My background is not precisely rotating equipment, and I need to...
  3. leont

    Underground Cased piping

    Thanks SJones !! It is a trench with a few hydrocarbon piping in not really good mechanical condition and I have been trying to stay away from welding, high temperature. I think we needs to put some heat here but for sure is an option. Thanks SJones !! Appreciated leont
  4. leont

    Underground Cased piping

    Hi everyone, A section underground piping will be replaced and there is a need to seal the annular space between the carbon steel casing and the pipe. Can you guys please, shed some light on regards the type of sealing material normally used for this purpose? What's your experience on similar...
  5. leont

    Protective Carbon Steel Sleeve on Underground Piping - Road Crossing Piping

    Thank you very much all of you!! Your feedback on this regard has been really good. Could not be better. In parallel I will held a meeting with a company. They have been doing this kind of jobs for a while. In a preliminary chat it was pointed out the issue created in terms of repair, execution...
  6. leont

    Protective Carbon Steel Sleeve on Underground Piping - Road Crossing Piping

    Thank you 1503-44 !! All my concern and my focus is on the fact GW testing completed on some of the underground piping revealed moderate metal loss. Since this is gasoline -clean service- I am not expecting internal corrosion. Conversely, given the very old piping with over 30 years in service I...
  7. leont

    Protective Carbon Steel Sleeve on Underground Piping - Road Crossing Piping

    Hi everyone, Is there any opportunity in this forum I am provide with technical information about the trend nowadays in the use of corrosion protective wraps on underground piping instead of typical design of corrosion protective wrap on pipe and carbon steel casing. There are countless...
  8. leont

    Cathodic Protection - Underground Pipe

    Hi SJones, Thank you for that short answer. Short answer that helps a lot. I really appreciate it !! Regards leont
  9. leont

    Cathodic Protection - Underground Pipe

    Dear Folks , I have been dealing with some issues related to cased underground piping and I need some technical help. When a CP is implemented the main purpose is to protect the bare pipe. However, the first barrier for soil corrosion as a damage mechanism is the sleeve. Both, the sleeve and...
  10. leont

    Underground Anchors Inspection

    I am looking for some feedback concerning inspection of the underground rod anchors of Flare Stacks or towers of communications. Meaning by that, the portion of the anchor system (concrete block and section of the rod between the concrete block and the ground surface). Is there any experience...
  11. leont

    Acceptance Criteria for warped and twisted tubes of Air Cooled Exchanger

    IRstuff, Firstly, thank you very much for your input. I am really sorry if my wording was not clear enough. I am not talking about a failed air cooled heat exchanger. What I am trying to say here is that my experience tells me there is an acceptance level of distortion on tubes of air cooled...
  12. leont

    API 661 Acceptance Criteria for warped and twisted tubes

    Hi everyone, Visual inspection performed on Air Cooled Heat Exchanger revealed some tubes are warped, twisted and with sagging. Tubes are SA-179, OD 1", tube-tubesheet joint is fully expanded in two grooves instead of seal weld. Location of the damage is about 6' from the back side of header...
  13. leont

    Acceptance Criteria for warped and twisted tubes of Air Cooled Exchanger

    Hi Everyone, A visual inspection on tubes of an Air Cooled Heat exchanger revealed tubes were found warped, twisted and with sagging. The fluid is Reach Amine and tube-to-tubesheet joint is full expanded in double groove. Tube material is SA-170, OD 1" and BWG 14. What is the acceptance...
  14. leont

    Mechanical design for deflagration Conditions

    Hi everyone, I need to complete an integrity assessment in a furnace operating in a Sulfur Recovery Unit, assuming this furnace eventually goes through a deflagration conditions. Trying to get information on this regard,I have found out detonation is pretty much the same than deflagration...
  15. leont

    Differential Hydro test on Shell and Tube Heat Exchanger

    Hi Gents, I have a Shell & Tube Heat Exchanger running to the following design pressure conditions: at 2200 psig on tube side and 220 psig at shell side. Background history points out this exchanger have always been hydro tested thru differential hydro test. However, drawing does not call for...
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