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  1. acedude

    Hot Bend Design

    spd60, Your comment that, "the client required the pipe wall to be well above the maximum thickness required by design/pressure code", raises some concerns. However, to address your immediate question at hand, you would need to contact an induction bending supplier/vendor and provide all the...
  2. acedude

    Hot Bend Design

    It is not certain what your question is specifically referring to. The Canadian code appears to be somewhat vague on this subject. The ASME B31.4/31.8 Pipeline codes do have some more specific guidance regarding induction bends ("hot bends"). In general, hot bends are used for cross country...
  3. acedude

    Longitudinal seam visa-vis helical seam welded pipe

    The manufacturing differences are quite different and well documented in the literiture. Howewver, I believe your query relates to the advantages or disadvantages between the two. One of the few or only advantage of sprial welded line pipe (and the reason for its emergence) is that it is...
  4. acedude

    Adverse Scraper Trap Corrosion (Internal)

    One of our Clients, an operator in the Mid East has experienced a concern with adverse internal corrosion (and corrosion rate) of many scraper trap barrels for their crude oil upstream gathering and downstream crude export pipeline system. The upstream gathering system gross fluids contain H2S...
  5. acedude

    Cross-Country Steam Pipelines - Design Code to Use?

    All Respondees, Thanks guys, this has been helpfull. The particular application for this steam line(s) are reinjection for enhanced recovery, therefore the reason for the high pressures. One of the other problems being the steam source is located 6 km from the field. I will look into the...
  6. acedude

    Pigging Forces

    Significant forces can be imparted to a pipeline due to a "runnaway" pig in gas lines as the pig moves through a bend. When a gas line pig gets "stuck" for any reason, the gas behind the pig compresses, and the gas pressure in front of the pig literally drops to nothing quite rapidly. When the...
  7. acedude

    Good engineering practice for sizing kicker line for scraper traps?

    A "Rule of Thumb" is that kicker/bypass lines are sized to be 1/4 to 1/3 the main line diameter. Most Operating Companies specify their criteria for kicker/bypass lines, and generally fall within this range. Kicker (launcher) or bypass (receiver) lines are only operated periodically, and as a...
  8. acedude

    Cross-Country Steam Pipelines - Design Code to Use?

    I would seek recommendations on which International design code to use for a 20", 6 Km, HPHT (900#, 600 degree F) cross-country steam pipline. My problem is B31.1 and B31.3 do not allow higher grade API 5L line pipe at these temperatures, and A106 Gr. B results in very high wall thicknesses...

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