Re: [PipingDesign] China Hydrotest Failure

From: <Christopher>
Date: Sat Jan 12 2008 - 01:03:00 EST

On Jan 11, 2008, at 7:29 PM, Paul Bowers wrote:

> <<Apparently this pressure vessel had reached fifty percent of the
> required test pressure when the shell
> ruptured.

I've seen a few of these. The fracture is typical of low toughness steel and the low burst pressure (a stress level of about 20% of the UTS) means that the cause of the failure was a good-sized crack somewhere--probably in a weld. where'd you get the pictures?

Christopher Wright P.E. |"They couldn't hit an elephant at chrisw@skypoint.com | this distance" (last words of Gen.

.......................................| John Sedgwick, Spotsylvania
1864)
http://www.skypoint.com/~chrisw/ Received on Sat Jan 12 01:03:00 2008

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