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  1. Nottingham

    ASME B31.8 and B31.3

    Dear all code Gurus Having the Natural Gas Transmission Pipeline project including the Pipeline, Takeoff and Delivery Facilities, there is no question that ASME B31.8 will be employed for pipeline construction and testing. The question comes up when considering the the facilities such as...
  2. Nottingham

    B31.8: Pipeline Class Location

    Dear All As referred to B31.8, Chapter IV, 840.21, for determine location class of pipeline, it defines the lay-out along the pipeline route to be a Zone of 1/4 mile. Does anyone has idea the reason for this specific figure, why not they bring the pipe size, volume, designed pressure to be in...
  3. Nottingham

    Subsea Tie-in

    Dear all In order to make a tie-in to the exising subsea pipeline, it seems for me the best way is to employ the hot-tapping in case the system shutdowm is not permitted. But if it is permitted for a certain period, does anyone has any idea what method should be applied in term of engineering...
  4. Nottingham

    Double-Block Valves and Double Block and Bleed Valve

    Does anyone know the application of double block and bleed valve, i understand this valve consists of double seats with a body bleed, is it correct? Aslo, i heard that in case the pressure rating 900 and above, the double block valve (Two valves seried with a bleed) shall be applied. Double...

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