Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. gasoperations

    RWT ( Remaining wall Thickness ) assessment of Pressure vessel

    Here is a question / clarification required for API 510 ( Pressure Vessel Insp. Code ) Section 7.4.2.1 states Quote " For a corroded area of considerable size the wall thicknesses may be averaged over a length not exceeding the following" Unquote During a recent inspection a corroded area ( 30...
  2. gasoperations

    Oil PPM in GOSP

    Is there any guideline or general observation by experience Operation Guys about what is the expected oil ppm in the water drain from 3-phase separators. It is well understood that the oil ppm in water will depend on operation pressure of the separator & temp & chemical dozing etc. For 3 stage...
  3. gasoperations

    Flanged QOC ( Quick Opening Closure ) for Liquid pipeline Pig Receiver

    Recently there was a malfunction in QOC of the receiver. The welded QOC was cut & and replaced with Std. Flange and Blind as a temporary measure. Now we are planning to replace the QOC. Is it acceptable to have a QOC as Flanged instead of welded ( Almost all Launcher / Receiver that I have seen...
  4. gasoperations

    Minimum design Pressure requireed for applicability of ASME BPVC Sec VIII part 1

    Dear experts I need a clarification about applicability of Sec VIII part-1. Under section "U1" one of the conditions where code is not applicable is Quote "(-1) vessels having an internal or external pressure not exceeding 15 psi (100 kPa)" Unquote I believe it should be psig and Kpag. Expert...
  5. gasoperations

    Revamping Vs. Renew - Oil fired Turbine Engine for Pump

    Guys There is a situation like this. A 50 yrs. old Oil Fired Turbine Engine for Crude Oil Loading Pump ( 600 rmp ) is still in use ( yes still working for Ship Loading ). Generally Pump is still in good working condition. Only turbine is in bad shape in terms of increased and costly repairs. Now...
  6. gasoperations

    Simplistic Volume measurement for Tank Water drain

    Has Anyone experience in measurement of Water / oily water from drain of the Crude Oil storage tanks? Local mechanical readout is enough. No need for advanced measurement system with signal routed to remote station. The drain from the tank is gravity flow to the treatment pit. The challenges as...
  7. gasoperations

    Flow meter with Mechanical register

    Has Anyone experience in measurement of Water / oily water from drain of the Crude Oil storage tanks? Local mechanical readout is enough. No need for advanced measurement system with signal routed to remote station. The drain from the tank is gravity flow to the treatment pit. The challenges as...
  8. gasoperations

    LTCS use for piping

    I need the expert's advise on following design situation: Hysys simulation indicates that while initial startup up temperature will drop to -30degF in the Gas piping system (due to JT effect). But after the process lines are pressurized and during normal operations, the temp will be above...
  9. gasoperations

    Ex. Type PWHT equipment

    I am wondering if there is any Ex. Type PWHT equipment available for Pipe weld treatment in Oil & Gas process Plant. As PWHT equipment is basically a voltage transformer to produce low voltage high current output to heat the weld joint. Therefore PWHT activity itself creates hot surface at the...
  10. gasoperations

    Concrete Pedestal Base for fixed boom

    We have received a fixed boom crane for 10 MT with circular base. We have to weld the steel circular base on a steel plate bolted to foundation. Could some one please guide as to way forward to design the concrete base and welding and bolting design for the base plate. Manufacturer has...
  11. gasoperations

    Crack on Oil Line

    A underground crude oil line had a unusual failure recently as indicated in attached picture. It was a crack type failure but UT inspection on crack location and on near by material did not find any internal / external corrosion or any material defect like inclusion, lamination etc. Pipe...
  12. gasoperations

    Pressure drop across valve

    If a high pressure system ( say 9 barg ) with high flow ( say 2000kg/Hr ) is discharging into atmosphere through a 2" gate valve and a small length of pipe ( Small friction drop ). Will the pressure drop take place across the valve or the flow will choke at the end of the pipe. Thanks
  13. gasoperations

    Choked flow for Vapor PSV Relief

    Guys I was going through an interesting thread on the subject: thread1203-152033 It is still unclear if no details for the PSV is available, could the discharge piping be designed assuming max. back pressure ( P1 for tail piping ) as 10% of set pressure and exit pressure as atm. Thanks
  14. gasoperations

    PSV Discharge header design

    Guys, is there any problem if I design the PSV discharge piping with only following information being available: 1. Discharge capacity of PSV - lb/hr. 2. Max. allowable back pressure - x psig. 3. Temp. of fluid at discharge - x DegF Thanks
  15. gasoperations

    Effect of Sun / UV on strength of Fiber Glass piping

    We have recently experienced failure of 12" fiber glass water pipe ( about 40 years old ) operating at ~ 50 psig. The failed section of the pipeline was exposed to direct sunlight and thus exhibits erosion / deterioration of the surface epoxy coat. This is evident as some of the fibers on the...
  16. gasoperations

    Gas volume to Liquid Volume

    Is there any conversion factor for converting Gas volume in SCF to equivalent liquid volume for volumetic accounting purpose. I come up with 1MMSCF = 170 Barrel of liquid based on eqivalent enery of gas and liquid form. Is this factor correct for carrying out volumetic balance for a process.
  17. gasoperations

    Time to cool down oil Pool

    Is there any way to calculate how much time it will take to cool down a oil pool on the ground if have following information: 1. Temp change of Oil 150 Deg F to 100 deg F 2. Ambient air & Soil Temp 60 deg F 3. Wind vel 5 MPH 4. Sp. heat of oil 0.55 BTU/lb -deg F 5. Sp Gr of oil - 0.85 5. Soil...
  18. gasoperations

    Pipe Sections replacement for 8" line

    We have to replace about 8 section on a 8" NPS pipe with Wt 0.188". The available pipe joints are of slightly higher schedule #20 thk 0.25" and #40 thk 0.322. Could some one please clarify if these sections may cause problem for intelligent pigging? As intelligent pig is normally 95% of pipe...
  19. gasoperations

    Section replacement on 8" line

    We have to replace about 8 section on a 8" NPS pipe with Wt 0.188". The available pipe joints are of slightly higher schedule #20 thk 0.25" and #40 thk 0.322. Could some one please clarify if these sections may cause problem for intelligent pigging? As intelligent pig is normally 95% of pipe...
  20. gasoperations

    Orange Peel reducer fabrication

    Due to non avilability we have to fabricate a 10"x12" reducer from schedule 40, A53 pipe. Will it be acceptable as per B31.3 if the sample is proof tested as per 304.7.2 Any help will be appriciated G.OPS

Part and Inventory Search

Back
Top