Re: Nozzle Loads - FRP Tank

From: <Christopher>
Date: Thu Jan 25 2007 - 13:15:00 EST

On Jan 25, 2007, at 2:46 AM, Jose Enrique Montero wrote:

> Any idea how estimate nozzle loads for a fiberglass reinforced plastic
> tank?

Following the methodology of the ASME Code Section X you'd use the same level of basic shell theory in the remainder of Section X. None of the codes provide anything much other than general guidelines for estimating nozzle loads for a given system since every system is different. FRP components are a lot softer than those of structural metals so you can't just lift the loading from a comparable metal system. Statically determinate loading like momentum loads generated at an elbow won't change, but indeterminate loading like thermal loading or discontinuity loads will be a lot different. And the stress criteria are usually based on strain rather than stress. If this were my problem I'd get hold of a copy of Section X of the ASME Code and base my approach on that.

Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=P7iX2S0v1e_IYc3uC3BoFOYOI_nlevpElaPj4mV2MymaeDgOSfbyp98iEuHazYZnV8jcxegG3__4-A">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 Thu Jan 25 13:15:00 2007