Venkat wrote.
What if an existing piping is rerated to a higher pressure and the available pipe thickness just satisfies the new operating pressure, Is the 1.5xtimes test pressure is mandatory in this case?
You mean the new DESIGN pressure and not the OPERATING pressure? Because generally Rerating deals with most severe condition. For pressure testing of piping already in service, consider 1.2.1(included fluid services), 8.2.6 (pressure testing) and 8.3 (rerating) of API 570. Received on Sun Sep 11 03:19:00 2005
This archive was generated by hypermail 2.1.8 : Tue Mar 04 2008 - 11:40:44 EST