• Instrumentation

  Guidelines for Impulse Pipe Laying

  Posted by Padhu Edupuganti on July 16, 2020 at 11:10 am

  All impulse piping in general be given a slope of not less than 1 in 12 except where
  otherwise specified. The slope of impulse pipe work shall be down from the tapping
  point for liquids and up from the tapping points for gas service unless special
  provisions are made for venting and draining. For steam and Condensable impulse
  lines should be raised to same height to compensate for differential and bring down
  through condensing pots.

  Sitting of vents and drains shall be ensured at the highest and lowest points of
  piping run respectively.

  Impulse pipe lines shall be kept as short as possible consistent with good practice
  and accessibility.

  Handrails or process piping shall not be used as support to instrument impulse
  lines unless otherwise specified.

  Piping and tubing shall be adequately supported and fixed at distances not
  exceeding limits as shown in figure.

  Galvanized cable trays shall be used for continuously supporting four or more
  copper tubes and copper tubes shall be secured to the tray at 0.5 m interval.

  Use of multicore PVC tubes shall be preferred where multiple signals are
  transmitted.

  Trays supporting tubing shall be run with the breadth of the tray in vertical plane. If
  in horizontal plane the tray shall be provided with additional support to prevent
  sagging.

  All trays and supports shall be securely fixed to structural steel work or masonary
  as per normal practice.

  Impulse pipes shall be routed away from hot environment, places with fire hazards,
  spilled liquids and where they are subject to mechanical abuse.

  

  Padhu Edupuganti replied 3 years, 9 months ago 1 Member · 0 Replies

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