Underground FRP piping hydro test pressure

[SPLIT]

recomended or some code hydrotest pressure for gravity and pressure FRP piping

There is a 3500 m long pipe.Recomended length to be tested each time (1.5 m diameter ).To intall headers in each extreme of the pipe or a flange ?

Sorry so many questions

Regards ,


SPLIT

 

[vonkami]

Normally if the pipes are supplied from Europe a 1.5 times the working pressure will be required to test the line. In the North american Market a 1.25 times is accepted.

If the pipeline is divided with valves, test between valves after installing test flanges to the the end flanges of the section.

 

[SJones]

ISO 14694-4. That way it is "International" and not European or American.

Steve Jones
Materials & Corrosion Engineer

http://www.pdo.co.om/pdo/

 

[vonkami]

steve,
I agree with you about the ISO-14692, but please check this standard and you will find that most GRE pipes produced in USA are not in accordance with the ISO requirments. Check the recommended GRE pipe produced in USA and europe about the recommended hydrotest pressure.

 

[SJones]

What difference does it make where the pipe is made? If ISO 14692 is the quoted specification the the supplier must comply with it.

Steve Jones
Materials & Corrosion Engineer

http://www.pdo.co.om/pdo/