Re: Hydro Test Pressure

From: <Christopher>
Date: Sat May 26 2001 - 14:07:00 EDT

>Has there been any changed to the
>latest edition of the process piping code with regarrds to the material
>design factor and the hydro test rquirement ?.
The change was made to the ASME Code as a result of the increased allowable stress made a couple of yous ago. The proof factor was decreased from 1.5 to 1.3 to maintain the same margin against yielding during the hydrotest. If the piping code allowables didn't change, then the proof factor wouldn't change.

Christopher Wright P.E. |"They couldn't hit an elephant from <a href="/group/PipingDesign/post?postID=VQvlc4FSJ7qaJ4SSx_Ah3ud-0pdMDN8Kg8DA1lyWGEvWpUQhxiLpElSXK7Uy_xy4tPAv9Ng6QFo1aA">chrisw@skypoint.com</a> | this distance" (last words of Gen.

___________________________| John Sedgwick, Spotsylvania 1864)

<a href="http://www.skypoint.com/~chrisw">http://www.skypoint.com/~chrisw</a> Received on Sat May 26 14:07:00 2001