RE: Re: Valve identification on P&IDs

As for client specs, that's pretty par for the course when it comes to valve numbering and even line numbering for that matter.

I don't believe you'll have much problem as far as errors go, just so long as you have an engineer thoroughly and meticulously mark them up, and have the drafter fix them up with equal effort.

The only downside to this is the amount of time this'll take.. it sounds to me that these are going to be some rather large numbers, and I'm going out on a limb and going to guess between 10-15 digits before it's all said and done. I say this may take a lot of time because there'll be a fair amount of drawing "re-organizing" involved to incorporate these numbers if this is the case. Because I'm sure the drafter didn't allot space for numbers to be added, and if he did, he certainly didn't expect "VIN" number-esque sized labels.

I just recently tagged a 23-page P&ID set (marked up by the engineer) in about 8 hours combined, including equipment, valves, and line numbering. I got it back for a second iteration and I think there was like 2-3 numbers I missed, and about 15-20 numbers they forgot and/or didn't have available to them to mark on there. Iteration #2 took me about 1 hour to complete.

I have no clue the speed/efficiency of your staff, but assuming they're good, qualified people, I really don't see much of a problem. In the end, I guarantee the reward will definitely outweigh the trouble though.

Michael Roble

Piping Department

Continental Design & Management Group

Pittsburgh, PA

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From: PipingDesign@yahoogroups.com [mailto:PipingDesign@yahoogroups.com] On Behalf Of flowr_8
Sent: Friday, January 19, 2007 3:23 PM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] Re: Valve identification on P&IDs

Thanks for the quick response Michael.
The tags I'm refering to are pre-determined valve codes. These are an assigned code from which you can ascertain the valve properties. Such things as: Valve type (gate, globe, etc.) end connections (flanged, BW, etc.), rating, material, trim, handwheel or gear operator, and so on.

To answer your questions:
a) These numbers/codes are predetermined and just need to be noted against the valve on the P&ID.
b) These are in the client spec.'s.

Regards,
Richard Beale
Design Coordinator
EnCana Oil and Gas Partnership
Calgary, Alberta, Canada

• In PipingDesign@ <mailto:PipingDesign%40yahoogroups.com> yahoogroups.com, "Mike Roble" <mroble@...> wrote:
  >
  > a) Are the numbers already assigned and only need marked up
  on the
  > P&ID's?
  >
  > b) If no numbers are assigned yet, are you going to use your
  own
  > numbers or does the client spec call out for a specialized
  numbering format?
  >
  >
  >
  >
  >
  >
  >
  > Michael Roble
  >
  > Piping Department
  >
  > Continental Design & Management Group
  >
  > Pittsburgh, PA
  >
  >
  >
  > Statement of Confidentiality
  >
  > The contents of this e-mail message and any attachments are
  confidential and
  > are intended
  > solely for addressee. The information may also be legally
  privileged. This
  > transmission
  > is sent in trust, for the sole purpose of delivery to the intended
  > recipient. If you have
  > received this transmission in error, any use, reproduction or
  dissemination
  > of this
  > transmission is strictly prohibited. If you are not the intended
  recipient,
  > please immediately
  > notify the sender by reply e-mail and delete this message and its
  > attachments, if any.
  >
  > _____
  >
  > From: PipingDesign@ <mailto:PipingDesign%40yahoogroups.com>
  yahoogroups.com [mailto:PipingDesign@ <mailto:PipingDesign%40yahoogroups.com> yahoogroups.com] On
  > Behalf Of flowr_8
  > Sent: Friday, January 19, 2007 12:19 PM
  > To: PipingDesign@ <mailto:PipingDesign%40yahoogroups.com> yahoogroups.com
  > Subject: [PipingDesign] Valve identification on P&IDs
  >
  >
  >
  > Hi all,
  > I'm just doing a small inquiry. We have had discussions at work on
  > the value of putting valve tags on the P&IDs; the valve
  > identification code that is in the piping specifications for hand
  > opertated valves. Currently this isn't done. All that shows up on
  > the P&ID is the valve symbol, so if it is necessary to know more,
  > e.g. trim, handwheel or gear op., etc. you have to go to the
  piping
  > specifications. Our construction group are pushing for it as it
  will
  > make their job easier when they do a final walk through of the
  > systems. Engineering are reluctant because of the amount of work
  and
  > the possibility of error. We do produce isometrics from a 3D model
  > which has a complete BOM, which includes, of course, the valve
  tags.
  >
  > What's your experience? Value added or not?
  >
  > Richard Beale
  > Design Coordinator
  > EnCana Oil and Gas Partnership
  > Calgary, Alberta
  >
  >
  >
  >
  >
  > [Non-text portions of this message have been removed]
  >
  

[Non-text portions of this message have been removed] Received on Fri Jan 19 15:47:00 2007