Hi Tong,
You can not avoid the Tie-in joint in this case, RT is enough in lie of HT. sitll If u woried abt the integirity of the Tie-in joint u can increase the NDT tests usually ceint will ask for like 100% PT on Bevel edges, 100% Fitup inspection, PT after Root & hot passes, Final capping and RT.
Regards,
Mohanq8.
On Wed, Sep 2, 2009 at 8:19 AM, tong tong <tong2je@gmail.com> wrote:
Dear All,I have one tie-in point. The material is SA 312 TP316L. The test pressure is 350 bar and operating pressure is 250 bar. The big problem is there are no isolation point so hydrotest can't be performed on it. When I refer to API 570, clause 8.2.6 stated that when a pressure test is not necessary or practical, NDE shall be utilized in lieu of a pressure test. Due to this line is high pressure, is it enough only perform the NDT ? How suppose i do to convince our management level regarding integrity of the weldment ? Please help me. Thank in advance and you cooperation is highly appreciatedRegardsTong2je
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