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  1. jassin

    weld neck flange face hot dip galvanized

    we have fire water system which is designed at 16 bar. the galvanized spools we received at site have coating of zinc on serreated face of raised face flange. As per design we have used flat face gasket.these spools were also hydro tested at shop and no leakage was found. but client is...
  2. jassin

    hydrotesting of lines vent to atmosphere

    do asme 31.3 exempt the lines from testing which are went to atmoshpere
  3. jassin

    pipe end welding coming between ultrasonic flowmeter

    dear Dhurjati Sen my concern is whether weld is acceptable between flowmeter tapping without impacting the flow
  4. jassin

    pipe end welding coming between ultrasonic flowmeter

    gents we have 24" flare header from KOD to stack. in this line we have ultrasonic type flow-meter installed. now a pipe weld is coming in between the tapping for transducer. Is this acceptable or will it generate some error in reading due to welding internal protrusion. flush grind of weld is...
  5. jassin

    GRE JOINT INTEGRITY CHECK

    hi, we have two joint of GRE back-filled for access into plant, and we now want to hydro-test the system without exposing these two joints Is there any way to check the integrity of these two joints.
  6. jassin

    De-rate internal design pressure of pipes

    The design limits specified in the piping classes have been derived from the pressure/temperature (P/T) ratings for flanges given in ASME B16.5 for sizes u/i DN 600 (NPS 24) and B16.47 for DN 750-1200 (NPS 30-48) unless otherwise stated in the piping class notes. There are no piping classes for...
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