pdprao
Mechanical
- Dec 29, 2002
- 33
What is the hydro-test methodology for Natural gas pipe line with test pressure of 74 bar which is laid above ground of 800 m length . The line is designed as per ASME 31.8 and being tested separately.
a) Whether Underground pipe line hydro test procedures as per API- 1110 which is based on hydro-test pressure drop acceptance value criteria with PV plots & air volume calculation is it really applicable for this Pipe line which is laid above ground and where all the weld joints/ components are readily accessible for visual inspection.??
b) what is applicable code clause for Hydro-test criteria of the High pressure gas pipe line laid above ground and relevant acceptance standards of hydro-test results. ASME 31.8 does not give clearly the requirements for above ground Gas pipe line hydro test requirements.
Techman