Re: [MW:19417] under ground pipeline leak testing method during hydro test

underground pipelines have been hydro tested for a time of duration 1 hrs but line is 1.5 km.this pipeline are tested by without using the pressure and temperature recorder and my question 

why do we want to use this pressure and temperature recorder?

can you give me any detail for this one and send some sample copy format & procedure

  

Regards

HAFEEZ KHAN.G 

 

On Fri, Jan 6, 2012 at 9:35 AM, narasimha murthy <jnm71269@gmail.com> wrote:

Underground lines shall be hydro tested for a time duration of min 24 hrs by using pressure and temperature recorders so that any drop in pressure if noted can be evaluated if its due to temperature variation or due to leakage, this should be a procedure accepted with agreement of the client.

Regards

On Thu, Jan 5, 2012 at 2:49 PM, mohd.qce <mohd52100@gmail.com> wrote:

Dear experts,

Can any one give good and efficient method of underground(buried) pipe
line leak testing method during hydrotest?

Pipe:        API 5L Gr 52 MS PSL-2.
Length :    Two section 50km+50km (2500 joints approx each section).
Test pressure : 73.25 bar.

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