Re: P&ID

Why dou you have to be so offensive? You just called me a retard, and my question rubbish, but didn't explain what was wrong with what I said, except repeating my words with exclamation marks.

What is it that made me retard? Saying that a P&ID doeasn't show supports, elbows or routing? Was I supposed to say it does?

I admit I am new (and I said that before on this list), and I was just trying to express my opinion on the issue realizing I could be wrong. I did not expect this.

All I was trying to say that The P&ID doesn't help me much when it comes to piping. It doesn't help me in calculating pumping requirements, because it doesn't tell me the pipe lengths or routing, and some of the fittings that I need to know about to calculate pressure drops. And it doesn't help me in pipe stress calculations. But it tells me alot of (if not all) what I need to know about the process. So why should it be called a piping and instrumentation diagram if it doesn't tell me much about piping? If I want to understand the piping system I don't look for a P&ID, but if I want to understand the process I do look for the P&ID; so what should it be called? And realizing I'm new and could have missed something in my reasoning, I tried not to be very assertive and asked what others think.

So as you can see, this is the poor retarded mental process that somehow found it's way from the dump yard to Mr Littleford's exalted computer.

This kind of attitude does not encourage discussion, especially for newcomers like me.

By the way, for some reason I feel the logic seems to depend on what industry you're in. So, for the record, I work in seawater desalination, mostly reverse osmosis.

S.F. Al-Sharif

• In PipingDesign@y..., Dereb derebi <dereb1@y...> wrote:
  > Sorry guys to be so blunt, but, I have never read so
  > much rubbish in my life. It's a P&ID - pipe supports!,
  > elbows!, routing! Have you done any piping? Is this a
  > retard zone!
  > Regards.
  > Derek Littleford
  > --- "Sharaf F. Al-Sharif" <alsharif@b...>
  > wrote:
  > > I think it makes much more sense to call it "Process
  > > and Instrmentation
  > > Diagram", than "Piping.." because, just like you
  > > said, it is like a PFD plus
  > > the instrumentation. And it doesn't tell you enough
  > > about the piping
  > > (routing, supports, some of the fittings like
  > > elbows), while it practically
  > > gives you a complete view of the process scheme. It
  > > is also done at an early
  > > stage when much more is known about the process than
  > > the particular piping
  > > arrangement that will be used.
  > > What do you think?
  > >
  > > S.F. Al-Sharif
  > >
  > > > -----Original Message-----
  > > > From: SARE, RALPH H.
  > > [mailto:SARERH@Y...]
  > > > Sent: Thursday, May 24, 2001 8:18 AM
  > > > To: 'PipingDesign@y...'
  > > > Subject: RE: [PipingDesign] P&ID
  > > >
  > > >
  > > > the first is correct. Its piping and instrument
  > > diagrams (same term use by
  > > > Becthel, FlourDaniel, ABB Lummus, etc who built
  > > our plant
  > > > complex). its the
  > > > diagram showing the flow, line and equipment
  > > number number,
  > > > normal process
  > > > condition and instrument setting. Its companion is
  > > PFD - process flow
  > > > diagram. its an overview of the process. Much like
  > > a P&ID minus the
  > > > instrumentation and spool number.
  > > >
  > > > -----Original Message-----
  > > > From: Goh Kenrick [mailto:kenrickgoh@h...]
  > > > Sent: 23 May, 2001 11:26 AM
  > > > To: PipingDesign@y...
  > > > Subject: [PipingDesign] P&ID
  > > >
  > > >
  > > > What does P&ID stand for? From what I know and
  > > after refering to piping
  > > > handbook, it stand for piping and instrument
  > > Diagrams. But a
  > > > search on the
  > > > website, says that it stand for process and
  > > instrument diagram. Now I am
  > > > all confused. Can someone out there tell me
  > > exactly what P&ID stand for?
  > > >
  > > > Thanks
  > > >
  > > > Kenrick
  > > >
  > >
  >

  ---

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