Re: Threaded Connections for Instruments

i dont agree. assessment of risk is by process system not individual component of a piping system. A threaded joint is allowed in all of the pipe spec (within the limits specified in the pipe class) that i have used even if the process falls under the scope of ASME B31.

bottom line is - i find it hard to accept that it will result in the reduction of severity (refering to term as used in process safety management).

• In PipingDesign@yahoogroups.com, shasingh@... wrote:
  >
  > The Idea of not using threaded connection in any specification /
  class is
  > to avoid taking any chance or because the class is for some
  critical
  > service or for high pressure. But using threaded connection after
  block
  > valve reduces the severity of that pipe and hence a threaded
  connection can
  > be used.
  >
  > Regards
  > Shailesh
  > Technip Abudhabi
  >
  >