8 replies to this topic

[marthin_was]

Dear Forum,
Need your advice.

I have 24" piping spool that contains 24" orifice flange. We will hydrotest the piping package as per code.

My question : if later on we will change the orifice plate, do we need to re-hydotest the pipe spool?

thanks,
MW

[JoeWong]

Do you hydrotest your spool with orifice plate ?

[marthin_was]

Thats what requested by our operator. But I challenge the idea due to the plates may will broke.

Do you hydrotest your spool with orifice plate ?

[djack77494]

If you're testing through the orifice assembly, then I think it best to remove the plate and substitute a spacer. A benefit of doing it this way is that draining will be easier and more likely complete.

[JoeWong]

If possible try to minimize items i.e. internal, control valves, etc which already hydrotested during fabrication stage. Minimize potential of unwanted damage of to these item .

[Qalander (Chem)]

Thats what requested by our operator. But I challenge the idea due to the plates may will broke.

Do you hydrotest your spool with orifice plate ?

I understand

specially fabricated attachment; hydro test spools are employed/maintained at many refineries either at their workshops or through their service vendors; being a task repeated many a times therefore cost savings/ still ensuring requirement's fulfillment.
Hope this proves helping.

[marthin_was]

thank you all for the reply

[mkhan]

Hydrostatic test is mandatory as per code requirement , usually such spool or line which contain flow meter, orifice and control valve etc , such items a need to be removed prior to hydrotest and line shall be tested with dummy fabricated spool .

[fallah]

control valve etc , such items a need to be removed prior to hydrotest and line shall be tested with dummy fabricated spool .

You can avoid removing control valves provided that each side of the valve to be considered as boundary of a test package and blinded during hydrotest.