How To Read Piping Manual Drawing

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How to read pipage drawings

• Thread starter Neitrino
• Start appointment Sep 22, 2011

Dear all...

Pls advise me how to read and understand pipe drawings (process PID drawings)... I mean how does fluid flow and what process are running there. I am doing physics and I have quite practiced technical background. When interpreting electrical circuits nosotros are having nodes with defind voltage and ground... so we know that current flows from higher potential to lower...is there similar approach to piping scheme... any books for beginner or quick manuals please...

Thank you very much
GT

Answers and Replies

P&ID drawings don't typically (not that I've e'er seen) give actual process information. The lines are typically drawn with arrows showing the direction of menses in P&IDs, but certainly in the proprietary Process Menstruum Diagrams. The arrows should be built into the lines, so expect like a triangle overlayed onto the line itself, with one vertex directly on the line and pointing in the direction of period.

Pressure is what would dictate the direction of flow and the analogy betwixt force per unit area and voltage is usually (for good or bad) used, although that's because pressure and differential pressure are more easily understood than voltage.

If the lines don't take arrows for indication, you'll take to get the information indirectly. The mode lines are fatigued for pumps is usually a clear indication of the management of period. Sometimes there is special instrumentation (shutdowns, interlocks, etc.) that volition give away process limitations that could allow you to determine a little about the procedure.

At that place are other types of equipment that are directionally specific (like a bank check valve) and are drawn that manner. Learning these types of equipment would also exist an like shooting fish in a barrel style.

Other than that, without any specific drawings or examples it could be hard to explain.

P&IDs are just that - schematic representations of the pipe and instruments - the installed hardware. They do not show the process parameters (period, temperature, force per unit area, etc.) because those parameters volition vary depending on how the organisation is operated.

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