In the past, we allowed the vendors, valve maintenance companies and valve testing facilities (third party) perform the test under PTTGC’s witness. We reserve the right to reject them if we found poor quality such as the below example problems ;
1. Work delay, PTTGC’s inspector spent long time at the testing shop for valve testing.
2. There are many commented items during execution such as using wrong range of pressure gauge, pressure drop/leakage, etc.
3. Using the conventional testing with the blind flange closing and bolting. Also this method cannot perform to butt and socket weld end valve.
4. Inspection documents delay.
At present, we may recommend the good test facilities to team or may perform an audit if needed by project. In the future, we should set up the new service group for valve testing facilities and audit them to PTTGC AVL.