What is the Main Process Line in P&ID

Hello Jlong

Is this a Class or Homework question?

Kind Regards....

Hi Sparkstation,

I guess you know the answers and want to borrow your Knowledge at the support for my embarrassment from class...

Have a good night,

Jlong

We get a lot of children here trying to get someone to do their homework. Sparkstation's question was not rude or snotty, but your response was Jlong.

If this is a homework assignment, say so. You will still get help in the form of pointing you in the right direction; just not the outright answer handed to you on a silver platter.

If you want to get support you should respect those whom you put the question

There is no one correct answer to this outside the academic world.

The only thing that matters is the convention adopted by the organization using the P&ID. Even then, most organizations probably never tried too hard to define the term. Where I work, we don't define, or make bold, any main process lines

I saw this question was posted awhile ago, but I thought someone might stubble upon this again one day so to answer your question I found this https://www.lucidchart.com/pages/what-is-piping-and-instrumentation-diagram to be really helpful. Good luck to the next soul who needs this question answered.