Water composition for hydrotest

[andygo11]

Hi, I have a question regarding the hydrotest water. Is there any codes or practice we can follow in terms of the water used for hydrotest? How to prevent the potential corrosion issue? Thanks.

 

[EdStainless]

Have you searched eng-tips? This has been discussed a number of times before.

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P.E. Metallurgy, Plymouth Tube

 

[bimr]

Link

Link

Link

 

[andygo11]

Thanks!

 

[Alberto Valdes]

50 microns seems to be a rule of thumb for maximum acceptable particle size for hydro test water (at least for carbon steel). I have researched unsuccessfully (including Eng-Tips) the technical basis for this magic number. Does anyone know where the 50 microns come from? ... your feedback is much appreciated.

 

[bimr]

Don't know the answer but the smallest sand size is approximately 50 microns.

 

[Dhurjati Sen]

Dear Andy,

Refer DEP 31.40.40.38-Gen.


DHURJATI SEN

 

[Alberto Valdes]

Dhurjati, DEP 31.40.40.38 seems to be a Shell document. Do you know how I can get it?; I searched the Internet for a download site and could not find any.

Regards, Alberto Valdes

 

[Dhurjati Sen]

Dear Alberto,

Shell DEPs are not available for free. You (your company) need to buy it.

Regards.

DHURJATI SEN