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Valve Testing

Valves manufactured by REMOSA undergo the most stringent quality control. All welded joints are subjected to 100% radiographic examination where accessible to radiography, or to 100% ultrasonic examination where not accessible to radiography. All examinations are carried out in accordance with ASME Code Section VIII Division 1, Paragraphs UW-51 and UW-53 respectively. Furthermore, welded joints are also subjected to liquid penetrant examination in accordance with ASME Code, Section VIII, Division 1, Appendix 8, and to magnetic particle examination.

All hard faced parts undergo a hardness test.

After assembly, all valves undergo a hydrostatic test in accordance with ANSI/ASME B 31.3 Code and a hot stroking test which is planned and performed for every single valve simulating as close as possible the real operating conditions. Hot stroking test is carried out at the design temperature.

A data book delivered with each valve includes:

1. quality control plan;
2. manufacturing and inspection plan;
3. welding procedure;
4. qualification of welding procedure;
5. coating application procedure;
6. qualification of coating application procedure;
7. hydrostatic test procedure;
8. hot stroking test procedure;
9. procedure for non-destructive, radiographic, ultrasonic, hardness and dimensional examination/test;
10. certificate of chemical analysis and mechanical examination for all materials used;
11. certificate showing the results of all examinations/tests carried out;
12. certificate of tests carried out for refractory material;
13. certificate for refractory material application;
14. drying-out/curing diagram for refractory material.

Copyright © REMOSA spa 1998-2008 Last updated on March 3rd, 2008