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  1. GregLamberson

    Portable receiver

    Agree 100% BigInch - that's why I asked the question of why - generally there is some logic in decisions made, but it is not always obvious what that logic is or if it makes practical sense. I struggle to see it on 30". Greg Lamberson, BS, MBA Consultant - Upstream Energy Website...
  2. GregLamberson

    Portable receiver

    bartee Big Inch is correct. Need to look at the client's reasoning behind this request - is it cost, schedule, space limitations. Also need to ask the client what type & frequency of pigging will they be doing. Will inteliigent pigs be used? The type of pigging will drive the length &...
  3. GregLamberson

    Portable receiver

    bartee I've used portable pig traps before, typically in a scenario where you have allot of small gathering lines that are the same size(not over say 12") that need to be pigged occasionally and the client didn't want to build a bunch of pig traps - we just had connections on each end of every...
  4. GregLamberson

    Beating up on your vendors

    zuccus Perhaps when the vendors start refusing to provide components based on this guys tactics, it will get management's attention. Not all MBA's are stupid, some are just too smart for their own good (or anyone elses)!! I'd say how you laid it out to the forum in your post should suffice for...
  5. GregLamberson

    Check list for Cross country pipeline design

    a234f56 You don't calculate man-hours for a cross ocuntry pipeline - that is for plant work. Basically you build crews based on the work to be done and determine how many days it will take each crew (with the welding crew setting the pace as far as daily progress), including overheads &...
  6. GregLamberson

    welding near fuel tanks

    tristrium1 This is nothing to fool around with. Suggest you take a look at API 2207 which is written for preparing tank bottoms for hot work. Not exactly what you are doing, but it has some very prudent precautions you need to take. I would also suggest, if you don't already have it in...
  7. GregLamberson

    Uncovered buried pipe support during pressure test? Guidelines?

    I think what seasar is talking about is the bits at each end where the test headers, recorders & dead weights will be will be located. The rest of it, even if it wasn't backfilled would not be at risk for excessive movement if it's in the trench (temperature fluxations would be a whole...
  8. GregLamberson

    welding near fuel tanks

    For fire you need 3 things, oxygen, a spark and a combustible. Near a tank filled with diesel or jet fuel you have 2 of 3 - add welding and bingo. You need to use gas detectors to assure the level of vapors are suffeciently low prior to welding and continually monitor it during welding. A...
  9. GregLamberson

    project life

    abd34711 In a nutshell, a feasibility study is an early study to determine, among other things, if the project is feasible or not and would include a conceptual design, enough of a design to do a cost estimate (level of accuracy is detemrined by the amount of cost the owner is willing to spend...
  10. GregLamberson

    Utility requirements during construction of a refinery project

    Myango: No rules of thumb that I know, just have to do a quick study for power, air, and water and determine how much of each is required based on the man power, equipment & work that will be done/used. Then determine if the exisiting plant has excess capacity and can provide or if you need...
  11. GregLamberson

    Cadweld failures pipelines

    Very interested to know more - never seen or heard of it happening either. Could be poor coating around the cadweld leading to excessive localized corrosion? Must be thin wall pipe? Greg Lamberson, BS, MBA Consultant - Upstream Energy Website: www.oil-gas-consulting.com
  12. GregLamberson

    Vessel Stored Energy Limits

    Correct on the TNTlb. SD = Safe Distance = meters, sorry should have specified. Greg Lamberson, BS, MBA Consultant - Upstream Energy Website: www.oil-gas-consulting.com
  13. GregLamberson

    Vessel Stored Energy Limits

    Ooopps, should have been: E = (PV / k-1) x (1-(Patm / P)^k-1/k, and SD = 15 (TNTlb)^.5 Greg Lamberson, BS, MBA Consultant - Upstream Energy Website: www.oil-gas-consulting.com
  14. GregLamberson

    Vessel Stored Energy Limits

    Do a stored energy calculation by: E = (PV / k-1) x (1-(Patm / P)k-1/k, where: E = Energy in Joules P = Absolute pressure in Pascals V = Test volume in M3 Patm = Atmospheric pressure in Pascals k = Ratio of specific heat of air Then convert to TNT: TNTlb = E x 4.8 x 10-7 The safe distance...
  15. GregLamberson

    Emergency response gasoline spill

    5689 You might try: USEPA Oil Program Center at (703) 603-9918 or Scientific and Environmental Associates, Inc. 325 Mason Avenue Cape Charles, Virginia 23310 Tel. 757-331-1787, fax –1788, email seahq@erols.com I cut & pasted an example TOC, probably a little "heavier" than you would be...
  16. GregLamberson

    pipeline drying

    pipeliner3000 Sorry to piecemeal, but we are in the process of hydro testing the onshore portions and will be using methanol slugs. We checked with our vendor and no issues with the epoxy, however, you might want to check the valve vendor to make sure the seals are okay with methanol - outside...
  17. GregLamberson

    pipeline drying

    pipeliner3000: Just curious, are you internally coating the joints also? Reason I ask is I am on a project at the moment where the owner has internally coated pipe (epoxy) and is not internal joint coating. Greg Lamberson, BS, MBA Consultant - Upstream Energy Website: www.oil-gas-consulting.com
  18. GregLamberson

    DRYING OF A 50KM PIPELINE THAT IS NOT BEEN BRUSHED

    UNIQUE0 You haven't mentioned what kind of service this pipeline is for. If I were an operator and my pipeline had sat for 3 years as this one had, I would want to check out the condition of the pipeline 1st with a smart pig run. You stated -40C & +7C dew points, not sure how you jumped...
  19. GregLamberson

    Are you busy? Informal survey.

    1. Based in the midwest: oil & gas-proj, const & eng mgmt 2. 2 proposals in this month 3. 1 major contract, 1 minor contract, 1 pending award 4. 2010 is trending about 20% higher (in volume) than 2009 Greg Lamberson, BS, MBA Consultant - Upstream Energy Website: www.oil-gas-consulting.com
  20. GregLamberson

    Pressure Testing for Leak Detection

    arh13p I see no one has answered. You will need to be more specific as to what the service is for and under which code the pipeline is governed. Specifications & procedures are separate documents. Your project specification will contain the requirements for meeting the governing code(s) as...

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