Some clients especify what kind of NDT and the percentaje that has to be aplied for headers , here in Ecuador many accidents have happened in hidrostatic tests therefore a common practice is RT/UT for girth welds and DPT weld-thread o'lets, and no one header can be used more than three times, of couse the header has to be tested before the pipeline, in every test
BR
Date: Sat, 7 Aug 2010 15:19:14 +0530
Subject: Re: [MW:6358] Hydrotesting of pipeline
From: rajeevarora007@gmail.com
To: materials-welding@googlegroups.com
for safety point of view and for the confirmation of the weld quality you can adopet the any NDT method according to the requirement like RT having the record and UT no record ( RT and UT can check the quality of complete weld ) and DPT is only for the surface defect.
it will be advicable to have the RT and DPT test for the weld of header rest depand on the procedure or specification.
On 7 August 2010 12:42, sumit jaura <sumit.jaura@gmail.com> wrote:
Dear all,
Can anyone suggest that whether it is must to have radiography of all
flanges and nipples on test header for hydrotesting?
or we can only allow by ut or dpt only.
Sumit ,
P. engineer,
Worleyparsons
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Regards
Rajeev Arora
"DON'T LET SOMEONE BECOME A PRIORITY IN YOUR LIFE...
WHEN YOU ARE JUST AN OPTION FOR THEM....."
SO , Always keep in mind that......
DON'T GO THE WAY LIFE TAKES YOU,
TAKE THE LIFE THE WAY YOU GO,
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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