Flow colours in schematic

[searlesy]

Hi, I was just wondering if anyone knew if there were standard colours that I should be using to denote flows of certain types of materials in an engineering schematic, eg, natural gas, air, water etc... I havent dont much drawing at all before, and would like to start out on the right foot,

Cheers,

Matthew

 

[Montemayor]

searlesy:

Schematic drawings play a minor role as tools in the life of process engineer - whether at the plant site or at the design office. Why would any process engineer rely on shematic drawings when you are required to produce an accurate and process descriptive P&ID?

I wouldn't worry about a fluids' color code for schematic drawings; and I've never seen a color code on P&IDs. More often than not, a fluid identification is built into the pipe code used in the P&ID.



Art Montemayor
Spring, TX

 

[FrancisL]

P&ID may not often use colours, but Control System graphics, and sometimes the pipes themselves do.
Everyone seems to have a different standard though it is typical to differentiate process from utility lines.
I think Mathew is quite right to ask.
And unfortunately many P&ID's are not very 'accurate and process descriptive' especially in respect of sequential processes.
Francis

 

[GasProcess]

Generally there is no color code for the different process streams on the schematic. Generally the schematics are only the beginners’ step for understanding of the complex process. Since most of the process plants have some color coding for the pipe lines in the plant, the same color coding may be used for the schematic also.

 

[searlesy]

Thanks Francis and GasProcess. Using the colour coding for plant pipelines was what I originally thought to use. I realise that the schematic is a very basic step, however I just thought that the more intuitively it was done, the easier it would make things.