Tagging of Pumps 1

[europipe]

Hello you all,

I have a question about tagging pumps on PID.
In a plant built by Lummus the pumps are tagged:GA-xxx
(where xxx stands for a number).
What does the abbreviation 'GA' stands for ?

Anybody knows?
Thanks in advance

 

[BigInch]

pump

P or, for some reason; of which I've never asked the origin, G is often used for pumps. I'm of the opinion that "P" is used too much already in its pressure conotation, P, PT, PI, PS ... etc. Equipment designations are typically as per client engineering design specifications and NOBODY questions those.

Two identical parallel pump units would probably be G001A & G001B.

Now ask me about the "A". I don't even have a guess for that, unless they're trying to type the pump, such as H for heater, HX for heat exchanger, etc.

"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.

"Being GREEN isn't easy." Kermit

http://www.youtube.com/watch?v=hpiIWMWWVco

http://virtualpipeline.spaces.live.com

 

[europipe]

You are right, mostly it is P-...
But it is a notation of all sorts of pumps and turbines.
Maybe there is an old Lummus designer out there?
I think it is 'Growling Apparatus' in this case.

 

[JJPellin]

In our plant, we number equipment with a unit number followed by a letter that tells us what type of equipment it is followed by a sequential number just to distinguish between different services followed by a letter. The first letter would be P for pump, E for exchanger, V for vessel, etc. The last letter would be A, B, C, etc. to show that this was a group of identical equipment typically installed in parallel. For pumps, this would usually mean A is the main and B is the spare.

Today I will be doing some work on 25P-20A. This breaks down to 25 unit (our #3 crude unit), Pump #20 happens to be the heavy vacuum gas oil service, and A means I am dealing with one pump out of an identical set. In this case, there is also a B pump. A is motor driven and runs normally. B is driven by a steam turbine and is typically on standby as the spare.

Our sister refinery in Texas uses a system that looks like the one you are asking about. G refers to general equipment. GA would be a general purpose pump. I don't know what GB or GC would refer to. It is a very cryptic system that I don't care for.

These are the two main equipment numbering systems that I have been exposed to. Ours seems to make more intuitive sense. But, I suppose, once you learn the system, it really doesn’t matter much.


Johnny Pellin

 

[zdas04]

Johnny,
I couldn't agree with your last paragraph more. Every naming scheme meant something to someone once. Every scheme is confusing to someone. In your plant you learn to deal with the tags that are there. In a new plant the tags quickly become less foreign. As a consultant I see a lot of tag schemes and they all look odd to me for a day or two then they make some amount of sense. In the end we spend a lot of energy "getting the tags right" that could be better spent "getting the process right".

David

 

[europipe]

The reason I asked this question is nobody knows where the characters 'GA' comes from.
The plant wants to evoluate all equipment with the meaning of all abbreviations.

Lummus has designed this plant in the sixties of previous age and left a lot of info, everything is clear, except GA.

 

[JLSeagull]

Historically, the Lummus alpha characters related to the construction or lead time sequence.

 

[europipe]

Thanks, you all,
mr. Seagull, think you are right,
I found a legend and characters seamed to be no abbreviations of the equipment.
BA=furnaces
CB=flare
DA=towers
FA=vessels
FB=tanks
etc.