[Shrivallabha Redij]

By SmartPlant if you mean SmartPlant 3D and by compatibility if you mean interface then the objects modeled in Microstation can be attached as reference graphics.

Also it is possible to export geometry (no attributes) from SP3D to Microstation. This needs Microsation 7.01 installed on the machine where you intend to export.

[Shrivallabha Redij]

By SmartPlant if you mean SmartPlant 3D and by compatibility if you mean interface then the objects modeled in Microstation can be attached as reference graphics.

Also it is possible to export geometry (no attributes) from SP3D to Microstation. This needs Microsation 7.01 installed on the machine where you intend to export.

[Shrivallabha Redij]

Thanks Jop,

It will be a flare stack, I have the stack placed 50m away from other equipment. So I can place the stack basically anywhere, but I guess another question is are there benefits to placing the knockout drum closer to the rest of the equipment or closer to the flare? Would the size of pipe or slope need to change?

I don’t think, you really mean it. Flare stack is placed considering the normal wind direction and generally you’d not place anything downwind to flare.

3rd point raised by Jop’s last post would also mean you’ll have to check the positioning [Elevation] of the KO drum i.e. to keep it on the ground or in a pit.

[Shrivallabha Redij]

Does “Inserted Pipe” come closer than calling it ‘standpipe’ as standpipe already has generally accepted definition?

[Shrivallabha Redij]

Your output is someone’s input! It will be important to know how the information will be ‘interpreted’ by downstream consumer.

And yes, consistency matters even if it is on the WRONG side

[Shrivallabha Redij]

What I did first was to check if this is becoming a trend or had there been some more cases of the same nature.

This discussion looks at some of the points you discussed.
http://www.pipingdesign.com/archive/0805/15668.html

In my company, we always do the way its always been done i.e. at field.

However, if the company is willing to venture out on an unbeaten path, it means (in a way) that they will be willing to absorb the “extra” costs they might incur if the scheme of things doesn’t work out as it was imagined / intended. In that case, there will be some lessons learned which will determine the future course of action that the company will take in this regard.

On the other hand, at this point of time, when the actual work has not been started, it would be pertinent to check the basis for comparing cost / time
[list][*] Cost of activity [Shop Vs Field] [/*]
[*] Time impact [Does it save time over the traditional technique?] [If yes, how much?][/*]
[*] Known Pitfalls of Field fab Vs Expected / Possible issues with Shop Fab.[/*][/list]
I guess it will be a combination of these items which will decide approach. So if you could perhaps tabulate the information and then verify if the people (I think managers that be) have ticked every item in your list that you think is important or will have bearing on the final outcome.

I don’t have a lot of experience to weigh in from any of the sides. I hope, I have posted something that helps some way.

[Shrivallabha Redij]

Here’s some more comment on the Dimensioning:
[quote]Hi 11echo,
I agree with your response. For whatever reason, I was overlooking the fact that the suction piping does not need to come back on itself in my description of reconfiguration. Your solution is correct and would allow for the removal of not just pipe supports PS-001A and PS-002A, but also PS-005/6 and 7 and give all around access to the pumps, which is of course how the piping should have originally been designed.

In regards to your last comment on dimensioning; in the transition from manual drafting to 2D CAD and to 3D CAD, it appears that designers are no longer being educated on how to correctly dimension a piping drawing. The example before us demonstrates several poor dimensioning practices]

The thread is https://pipingdesigners.com/wp//phpBB3/viewtopic.php?f=27&t=3073.

[Shrivallabha Redij]

[quote]shrivallabha …3. How to customize the software to better manage the two points stated?

shrivallabha …Nothing personal, unfortunately you have inadvertently put your message on a “red flag” and waved it in front of an old “bull headed designer”!
I don’t mind as I joined this profession when Computers and Softwares were already a common phenomenon. Another thing your experience is more than my age, literally. So there’s no way that I could have seen “evolution”. In fact, without digressing from Anton’s topic too far, here is a thread in which we all have posted]viewtopic.php?f=1&t=2115[/url]

However, WE can’t change the situation which we are into now. So even if we’d like to ignore the third part, it will come into the picture one way or the other.

[Shrivallabha Redij]

Some part of this discussion is of relevance to this thread:
viewtopic.php?f=1&t=2529

From above posts by Anton, Jop & 11echo following two points seem to hold the key:
1. What items to dimension?
2. How to dimension these items?
And nowadays one or the other software would be used so probably the third would be:
3. How to customize the software to better manage the two points stated?

From what I have seen, some departments that use Autodesk ACAD for 2D work use multiple “ViewPorts” for sectioning and I am told it is very effective technique to avoid duplicity as the model remains constant. However, my knowledge of ACAD is pretty limited. So others who are proficient in this might be able to add from this perspective.

[Shrivallabha Redij]

Was this control valve different in face connection from the items in the pipe spec (i.e. pipe spec default was RF)? Or since it is CV the Spec break from Steel Spec to Cast Iron was occurring here?

Was the face of RF flange machined off to match with FF flange or they just tried to work it out as it is?

[Shrivallabha Redij]

The last time I did “Slurry” piping we used “Pinch Valves” (http://www.redvalve.com/rv/index.php/co … ew/67/116/) for shut-off and control. The great thing about this type of valve is there are no pockets to collect or trap the fines in the slurry.

Do these valves leak (at full closure)?
I am asking this because it will be pressing the soft tube using the sliding metal bars as clamp.

Also, if the slurry contains solids which are abrasive then can they still be used?

[Shrivallabha Redij]

Doesn’t PUP mean Pipe Up Piece? I had seen this term being used in Ball valves (non flanged) with soft trim. Not sure about site parlance though.

[Shrivallabha Redij]

Search of this site led to this link. Could be useful for you.
viewtopic.php?f=1&t=2803&hilit=GRE

[Shrivallabha Redij]

This youtube clip may be of some use:
http://www.youtube.com/watch?v=C-MP07KkC8k

[Shrivallabha Redij]

The only advantage that I see is its quick ON / OFF action and so the decision could be an outcome of HAZOP study. But there could be more, what does the P&ID indicate for Water with H2S service?

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