[MW:632] Re: Criticality of Pneumatic pressure test vs Hydrostatic onpiping system

Thank you Sir.

This is a very good "on paper proof" of good engineering practice / belief followed world wide.
I am quite interested in knowing similar about what are the other advantages of Hydrotesting over pneumatic testing?

Thanks in advance,

Thanks & Regards,
Dhwani Desai.
TOYO - PLANNING & PIPING DEPT.
91-22-2573 7213.

"Bathula Raghuram \(Mumbai - PIPING\)" <R.Bathula@ticb.com> Sent by: materials-welding@googlegroups.com 02/29/2008 01:17 PM Please respond to materials-welding@googlegroups.com

To "Materials & Welding" <materials-welding@googlegroups.com> cc Subject [MW:630] Criticality of Pneumatic pressure test vs Hydrostatic         onpiping  system

FYI!

Hereto attached the criteria for evaluating the potential dangerous of
pneumatic test vs hydrostatic test from safety point of view.

In this concern, we should always remember that is necessary to evaluate
the design aspects of material selection for piping lines to be
submitted to pneumatic test due to Process requirements: in these cases
ASME B 31.3 require that the materials be guaranteed against their
brittleness at the ambient temperature during pneumatic test.
Typical cases are the plants where the ambient temperature could reach
even minus 50^C (in particular to places like Azerbaijan, Kazakhstan or
Chinese plants on Mongolian border).


[attachment "Scanned_.pdf" deleted by Desai Dhwani 01752/TEIL] --~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
-~----------~----~----~----~------~----~------~--~---