Re: Unsustained Loading -Flange Pressure Rating

From: <Geoff>
Date: Tue Aug 16 2005 - 18:12:00 EDT

Hi Chris,

I actually received a valid response in another forum. The answer was basically that all standard components are included in the allowance for surge that allows excursions due to unsustained occassional loading. If on the other hand you have design a special flange to ASME or AS1210 then you will need to use the surge pressure in the design of that special component.

I would be interested to know how many people actually do surge analysis on process plants?

regards

Geoff Stone

Christopher Wright <chrisw@skypoint.com> wrote:

On Aug 16, 2005, at 7:41 AM, Saha, Tanmoy wrote:

> Usually surge loads are quite high and flanges cannot be designed for
> that due to economic reason.

So what do you tell your customer when you're standing over the ruins and he asks you why the hell his system came apart?

Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=xt-g7KaH6_TGtY-Ul3wvR7VzS6nUtw4rebI9hog8Fpa2OfVmotkVFswzAJJNKocqIYBV2IiQUBINUEKvIcI">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>

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[Non-text portions of this message have been removed] Received on Tue Aug 16 18:12:00 2005