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  • Users: daviwy
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  1. daviwy

    Acoustic ESDV Leak Testing

    Is anyone familiar with the acoustic ESDV leak testing methods and know of any recommended / best practice available? I have heard that this could be used as alternatives to the normal leak testing process that requires full depressurization of the pipeline. Mechanical Operations Engineer Oil...
  2. daviwy

    Subsea Valves Not Moving

    Gents, We have subsea valves that have not been functioned for a while. As Left: Filled with MEG at ambient Flowing pressure: 120 barg Max DP: 120 barg Content found initially: Hydrate Valve condition: clear evidence of the valve passing. The line now is clean and clear of hydrates, however...
  3. daviwy

    Water Injection Pipelines Integrity

    Gents, I am currently looking at the possibility of replacing our WI PL with something completely different. This will be a big project and I am thinking of going for a plastic lined pipeline system Is there any integrity issues that anyone can think of that should be considered for WI...
  4. daviwy

    Subsea Control Module (SCM) Overhaul

    Gents, Does anyone have historical knowledge of these systems and the normal cost for refurbishment? I am looking to find out what's wrong with one of the SCMs' we have in our warehouse and I want to know what the average cost of a "fault finding" exercise on a typical SCM is? And is it...
  5. daviwy

    Best Practices: gasket inspection / examination

    Gents, Morning, I am currently looking into inspecting / examining a few of our gaskets in oil and gas environment. Does anyone know of best practice techniques for the inspection of gaskets? All I can really think of is visual inspection technique but this will mean inspection thousands due...
  6. daviwy

    Gas Wells/Reservoir Halite Issues

    I am currently looking into how I can tackle the halite issues we are experiencing with our wells. A lot of them have salt build up just before the SSSV. We've been trying water washing for a while and that used to work. Now it seems like it is having no effect. We operate at relatively low...
  7. daviwy

    Salt Build Up in Manifold

    We are having salt build up in the manifold coming from some of our wells causing pressure build up in the wells. What we do to get rid of the salt is water washing the manifold. My question is, does anyone know of any method of preventing the build up in the first place? Secondly, we noticed...
  8. daviwy

    Manned Platform Vs Unmanned Platform?

    Ok, I asked for the first post on this topic to be deleted because for some reason some people took it too personal... Hmmm I wonder why! Anyways What's people's opinion on this topic? . Differences between manned and unmanned platform? pluses and minuses. . Sabelarias (sand worm coloney)...
  9. daviwy

    Integrity of Bolted Joints

    Hi, I dont have a task in this but it was something i overhead. I am quite interested in how people deal with the integrity of their bolted joints to prevent hydrocarbon releases/leakages etc. Please do drop more information or knowledge you have on this subject they will all be taken in and...
  10. daviwy

    Steam Turbine Valves Inspection Periodicity & Criteria

    Hi guys just a quick question on the inspection of steam turbine valves. Does anyone have advice on the inspection periodicity for steam turbine HP and IP stop and control valves? The other question is with regards to life time. When should this valves be changed and under what criteria...
  11. daviwy

    steam ops Anti-Icing Tubes tube to manifold failure

    Hi guys, We have set of anti-icing duct that are failing where the tube is welded onto the manifold. The system consist of LP steam at about 4bar fed into the anti-icing system at about 128degC a bundle consist of a bottom manifold where the steam enters and 3 top manifolds. The bundle is...
  12. daviwy

    tube fittings & tube manufacturers

    Hi, I have a few questions, 1. what sort of flexible "tube to tube" fitting can be used and will with stand 140degC steam at about 3barg tube spec => out dia 25mm, wt 1mm 2. what sort of fittings are there (apart from welding & swage joints) for fitting a tube to it's manifold operating with...
  13. daviwy

    Types of Powerstation's Anti-Icing system?!?

    Can you please let me know of different designs of anti-icing systems that can be used on different powerstations? Please do drop more information or knowledge you have on this subject they will all be taken in and appreciated. David O. Mechanical Engineer Graduate as of: 2007 Oil, Gas & Power
  14. daviwy

    Manufacturers of 10m 25mm tube

    Hi, Does anyone have contacts of any company that can manufacture 316SS 25x1x10000 tubes cheers Please do drop more information or knowledge you have on this subject they will all be taken in and appreciated. David O. Mechanical Engineer Graduate as of: 2007 Oil, Gas & Power
  15. daviwy

    What's 316 SS compatibility with 304

    Hi, does anyone know SS 316's compatibility with 316? Please do drop more information or knowledge you have on this subject they will all be taken in and appreciated. David O. Mechanical Engineer Graduate as of: 2007 Oil, Gas & Power
  16. daviwy

    Anti-Icing Tubes Pitting Corrosion Problems

    There's known issues about pitting corrosion occuring on our anti-icing tubes on the air intake heat exchanger units fitted on our gas turbines. These operates at above 420degC. Before i kick off this into a big project in replacing all our tubes with materials with better Pitting Resistance...
  17. daviwy

    Pipe Minimum Wall Thickness Calculation

    Hi, Can someone help me with this? I am trying to calculate minimum wall thickness for pipes according to ASME B31.1 standards, t (min) = PD/2(SE+PY) + A t(min)= Minimum wall thickness required (in) t(corr) = Mechanical, erosion, or corrosion allowance (in), typically 0.05 in. = A P = Design...
  18. daviwy

    Changing/Increasing GT Ramp Rate for warm start of a CCGT Powerstation

    I am currently loking at increasing the ramp rate of a Gas Turbine on a CCGT system, and have a temperature gradient limit. Can people please just give me what sort of concerns / advice / look outs / issues I should be on the look for as I am not experienced at this. the only concern I can...

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