Hydrotest Pressure for Ductile Iron Piping as per BE EN 545
Hydrotest Pressure for Ductile Iron Piping as per BE EN 545
(OP)
Hi All,
I have a situation where the ductile Iron pipe of 8" Piping needs to be hydro tested as per BS EN 545. The design pressure is 6 Bar.
As per BS EN Code, Test Pressure= 1.5 PFA + 5 Bar. This is giving the Test Pressure Value as 29 Bar. I,am confused why the piping has to be
tested to so high pressure when the Design Pressure is just 6 Bar. Moreover the piping is socket welded. Kindly help.
I have a situation where the ductile Iron pipe of 8" Piping needs to be hydro tested as per BS EN 545. The design pressure is 6 Bar.
As per BS EN Code, Test Pressure= 1.5 PFA + 5 Bar. This is giving the Test Pressure Value as 29 Bar. I,am confused why the piping has to be
tested to so high pressure when the Design Pressure is just 6 Bar. Moreover the piping is socket welded. Kindly help.





RE: Hydrotest Pressure for Ductile Iron Piping as per BE EN 545
The hydrostatic test pressure is generally 1.5 times the design pressure.
Design Pressure - the pressure used in the design of a pressure component together with the coincident design metal temperature, for the purpose of determining the minimum permissible thickness or physical characteristics of the pressure boundary. Design pressure for vessels is shown on the fabrication drawings and for piping, the maximum operating pressure is indicated on the line list. The design pressure for piping is the larger of 110% of the maximum operating pressure or 25 psi over the maximum operating pressure.
Suggest that further research is necessary on your part.
RE: Hydrotest Pressure for Ductile Iron Piping as per BE EN 545
Once this explanation/elaboration is offered maybe the OP can more thoroughly describe exactly what they are after, or what their specific concern with this requirement is?