Re: [PipingDesign] Cast iron pump nozzle with RF flange

From: <Christopher>
Date: Wed Jan 23 2008 - 00:54:00 EST

On Jan 22, 2008, at 11:47 AM, M. Engineer wrote:

> We had several failures for RF CI flanges in our
> refineries during bolting and tightening, please don't
> use RF cast iron flanges. On the other hand, we have
> several pumps with CI flat face flanges, and they are OK

It's OK to use cast iron flanges--people have been using them for years. Just don't over tighten them. Seems simple enough. It's a good idea to do some Code calculations to back up your bolting and maintenance practices.

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 Wed Jan 23 00:54:00 2008

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