pipingdesign: RE: AutoPIPE

From: <conor.walshe@alcan.com>
Date: Sun May 11 2003 - 20:36:00 EDT

Boo hoo.

Ah sure it was a wild shot,

On another point. Has anyone had success exporting centre lines from AutoPIPE back into AutoPLANT?

I am aware the capabilities of importing from AutoPLANT to AutoPIPE and know it has its limitations but am wondering about the reverse?

Regards

Conor

"Steve McKenzie" <Mechproj@xtra.co.nz>
09/05/2003 18:17
Please respond to PipingDesign

         To:     <PipingDesign@yahoogroups.com>
         cc:
         Subject:        RE: [PipingDesign] New question; blowing out gaskets on

PE line; how to
stop

Evening Conor

Yes I have one, yes I cant understand a word of it, and no you cant have it.

Cheers

Steve McKenzie

-----Original Message-----
From: conor.walshe@alcan.com [mailto:conor.walshe@alcan.com] Sent: Friday, May 09, 2003 7:26 PM
To: PipingDesign@yahoogroups.com
Subject: RE: [PipingDesign] New question; blowing out gaskets on PE line; how to stop

Evening all,

I am trying to locate a copy of "Design of Piping Systems" by M.W. Kellogg There was a also a 1991 edition by John Wiley and Sons Publ

I have managed to locate a copy in the nearby university library but would like a copy for myself. I'd like allot of things but would settle for the book for today...

Anyone biting?

Regards

Conor

"Steve McKenzie" <Mechproj@xtra.co.nz>
09/05/2003 17:21
Please respond to PipingDesign

         To:     <PipingDesign@yahoogroups.com>
         cc:
         Subject:        RE: [PipingDesign] New question; blowing out

gaskets
on PE line; how to
stop

and a bloody good flange they are too.

Cheers

Steve McKenzie

-----Original Message-----
From: Geoff Stone DD&D Australia [mailto:blenrayaust@yahoo.co.uk] Sent: Friday, May 09, 2003 12:06 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] New question; blowing out gaskets on PE line; how to stop

Table F was in the British Stand BS 10 before that was superseded. The Australian Standard AS 2129 still uses the nomenclature. Another standard AS
4087 duplicates the falnges but designates them by class. They are peculiart
to
the antipodese.
--- alwyn KAYE <altecheng@primus.ca> wrote:

BAcking rings from table F ... are these AWWA.. I'm not familiar with that
table.

I once used the appropriate cement for the material and cement welded on stiffeners the same OD as the joint and circumferentially. Looked horrible bit
it worked. Its amazing how chunks of the stuff can be molded right on... almost
any shape

Original Message ----- From: Steve McKenzie To: PipingDesign@yahoogroups.com Sent: Thursday, May 08, 2003 2:15 AM Subject: [PipingDesign] New question; blowing out gaskets on PE line; how to stop

Gents

Have put in a 250NB (355 OD) PN20 PE slurry line; expected max pressure 16

bar. Flanged joints are stub flanges, gramophone finish, Table F steel backing rings. Gaskets are 3mm reinforced insertion rubber. Have had a few

blowouts at 10 bar as we are not yet up to full output. Bolts were not being

tightened properly but I think the problem is more than that.

Need a better gasket.

Have considered:

No gasket; just tighten her up; the slurry solids might blind off any minor

   leaks.
   CAF gasket. Not my favourite as the CAF is probably too hard for the PE    grooves to get a good bite on.
   Spiral wound or corrugated metal.
   Metal backing ring to rubber: my favourite but where do you buy them?    Metal ring which cuts into the plastic as the joint is tightened.

Has anyone had this problem and if so how did they overcome it? No time for

major work to the flange faces, so the solution must be with the gasket itself.

In anticipation

Thanks

Steve McKenzie

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