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  • Users: Robys
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  1. Robys

    Check of welds while the Plant is running

    Good morning all, In the Plant where I'm working we are facing several leakages from branches welds, like on sockolets or weldolets, on SS lines in corrosive service. Do you know if there are methods to check the integrity of these welds while the Plant is running? Many thanks in advance!
  2. Robys

    Pipe material for welded carbon steel

    Hi what is the better option for welded C.S. pipe (SAW or EFW) for 26" and above? Is it better to apply it starting from 26" or from 16"? At the moment I'm using API 5L Gr.B PSL2 SAW from 26", but several companies use different specifications. Thanks
  3. Robys

    Carbon steel welded pipe

    Hi All I'm revamping a plant where lots of other companies did similar works in the last years, applying their own piping spec. In general I'm seeing they applied similar standards and materials, while API 5L Gr.B PSL2-SAW or ASTM A672 Gr.B60 Cl.12-EFW or ASTM A672 Gr.B55 Cl.13-EFW has been...
  4. Robys

    Hot Tap on "Bonna" concrete pipe

    Hy All I'm studying the possibility to execute two 32" hot taps on the old concrete pipe headers dia.1600 mm of sea water supply/return. This to avoid the drainage of the whole system. The concrete pipes are "Bonna" concrete pipes with 9.5mm internal steel plate as reinforcement. The pipes were...
  5. Robys

    Calculations in compliance with GOST Standards (Russian)

    Hy All We are starting the construction of a 11x2.5x2.5 meters Gas Skid to be installed in Russia. There is a generic contractual note that asks compliance to GOST Standards, that are the Russian Norms. Since it's just a small skid, does someone know if I can calculate the structure using...
  6. Robys

    BW valves on HP ratings

    Dear All I'm revamping a plant where our client has all the 2" and above valves 900-1500-2500 LB with BW ends, regardless the service or the valve type. My company normally use flanged valves. What's for you the better selection?
  7. Robys

    Valve trim for steam tracing

    Hi all! Is trim 1 applied on gate valves for steam tracing manifolds (3.5k steam) the right selection?
  8. Robys

    Use of valve on cold tap tie ins

    Are valves to be used on cold tap tie ins? What's the better assembly for this type of connection?

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