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  1. larryli2004

    Machine a threadolet to a socketolet

    Hi, Does anyone have experience of machining a threadolet to a socketolet? It is an odd question. We have a threadolet welded to the pipe already. Want to see if it can be machined to a socketolet. Thanks.
  2. larryli2004

    liquid ring compressor - curve - HELP PLS!

    I saw a performance curve for liquid ring compressor per the following (Sorry, curve can't be shown; X- discharge pressure; Y- flowrate; RP - rated point; RP is located out of curve and under almost the right coner of the curve) , but I don't know how to understand the rated point is out of...
  3. larryli2004

    Propane fire case PSV relief

    I have a few 2000 bbl propane bullet with a design pressure 250 psig. We have sized the PSV for fire case. My question is, can we relief all PSV to atmopshere? If we bring the PSV relief to flare system, the header will be very large. If we vent the relief to atmosphere, is there any code...
  4. larryli2004

    Triplex pump for sour applications

    I am running into a probalem with triplex pump for condensate application. The gas stream contains 0.3% H2S. There will be some H2S entrained in condensate (won't be much). We just got a triplex pump. The material is ok for sour application but it doesn't come with leak detection system. We have...
  5. larryli2004

    PWHT

    Can someone calrify for me regarding PWHT on sour service vessel? The vessel will be used for natural gas with 2% H2S. In ASME Section VIII Div 1, I believe it is called lethel service. The vessel material is A516 Gr. 70N. Per table UCS-56, my understanding is that if the vessel wall thickness...
  6. larryli2004

    welding 4130 low alloy steel and A333

    Hi, Is there any problem to weld API 5000 4130 low alloy steel flange with A333 Gr. 6 pipe? Does anyone see any welding issue here? I appreciate your advice. Thanks.
  7. larryli2004

    welding different materials

    Hi, Is there any problem to weld API 5000 4130 low alloy steel with A333 Gr. 6 pipe? Does anyone see any welding issue here? I appreciate your advice. Thanks.
  8. larryli2004

    Relief nozzle sizing

    Could somebody help me for the relief nozzle sizing? There is a ?V2 rule for nozzle sizing. I knew for a vessel nozzle sizing, ?V2 shall be less than 3500 lb/ft/s2. How is it for relief case? Thanks in advance.
  9. larryli2004

    Pipeline weights

    Does anybody have the software for pipeline weight calculation? I have a 6" insulated pipeline. Pipeline may cross some muskeg area. I want to check whether the weight is required.
  10. larryli2004

    3" sch 40 A333 Gr. 6 pipe

    I have an existing 3" sch40 A333 Gr.6 pipe which is located aboveground but it is used as a part of pipeline. Currently the design pressure of this line is 1440 psig. We need to increase this design pressure to 2250 psig. The flange will be changed out with 1500# flange.We will re-pressure test...
  11. larryli2004

    Maximum flow for globe valve

    Could somebody help to calculate the maximum flow through a 1" globe valve say 1/2" port size? Basically I have a small barrell with a 0.02 m3 volume at 1440 psig. There is one 1" globe valve connected with the barrel. If I open the globe valve to atmosphere, what would be the maximum flow...
  12. larryli2004

    Nozzle erosion problem

    Hi, we have a 2" 45 degree carbon steel nozzel to a veseel that is UT inspection showed down to 0.157" wall thickness compared to the nominal size of 0.343" WT due to impingement erosion. If the MAWP is 200 psi, do I need to change out the nozzle? Do we still have enough metal meet the pressure...
  13. larryli2004

    NPSHR for Recip Pump

    I have some questions regarding NPSHR for Recip pump. I have a separator which will operate around 300 psig. I am pumping the condensate from the separator to 1500 psig via a recip pump. How about the NPSHR for the recip pump? I got the data from vendor and they are saying 12 ft is needed. I am...
  14. larryli2004

    OGC regulation for oil and gas well

    Can somebody clarify some OGC regulations for me? If I have an oil well, can I use weight meter rather than separator to meter the oil and tie it into an oil pipeline header? I knew BC government accept weight meter for gas. How about oil? Thanks.
  15. larryli2004

    What is the rule of thumb for CRN number registration?

    Who knows the rule of thumb for CRN number registration? What kinds of vessel doesn't need to be registered? Size? Pressure? Thanks.
  16. larryli2004

    Questions regarding Magnetic particle test and UT test

    Hey, anybody know after we do bake out for sour service pipe, normally we follow with magnetic particle test or UT, in this case, do we still need to do hydrotest? Thanks.
  17. larryli2004

    Questions regarding pipeline pressure drop simulations

    Recently I did some pipeline pressure drop simulations however the result sounds not positive. When I use the defaut value of the pipe internal roughtness which is 1e-5m, the result cannot match the field data. Can somebody help me out this issue? I can change the roughtness, but it shows 0.008...
  18. larryli2004

    What is the material difference for sour and sweet service?

    I am just wondering that what is the difference between sour service material and sweet service material. I know sweet service material cannot handle sour gas or emulsion. Then how is the sour service material? I think they are ok with sweet service? Is that right? Can somebody clarify for me...
  19. larryli2004

    Is there any diffence between CSA flange and ASME flange?

    For aboveground sour low temp., is there any difference between CSA flange and ASME flange? Thanks.

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