logo
A versatile cross-platform mind mapping tool.
appstore
Get from App Store
Get
logo
A versatile cross-platform mind mapping tool.
appstore
Get from App Store
Get
edraw-max-horizontal
Product Tour
Guide
What's New
EdrawMax Online
TRY IT FREE
BUY NOW

Layout of P&ID

> P&ID Knowledge > Layout of P&ID
Posted by Janice | 04/22/2020
Requirements of the layout of a P&ID are intended to gain a balance between the desire to present all necessary data on P&IDs and the need to make PIDs easy to read and understand.

In terms of layout, a P&ID should follow the criteria below.

1. Reading order: Criteria contained herein apply to reading a P&ID from the bottom or right side of the drawing.

2. Drawing size: standard size is 22" x 34" (560 mm x 864 mm).

3. Present each P&ID to avoid disorder and allow future modifications. Show no more than three pieces of major equipment per P&ID. Leave more space for text entry and easier reading.

4. Show primary flow on each P&ID from left to right. Show flow through equipment relative to actual arrangement (e.g., cooling water supply in bottom of exchanger tube bundle and cooling water return out top).

5. Line weight variety: Make primary process lines heavier than secondary and utility lines to show hierarchy. Change line weight with Line tool in Home tab.

6. Show off-page connector arrows for primary, secondary and instrumentation lines entering the P&ID horizontally 0.25" (6.4 mm) from the left inside borderline and exiting 0.25"(6.4 mm) horizontally from the right inside borderline. Utility connectors may be shown at any convenient location within diagram area.

7. Show the center point of a PSE (Pressure Safety Element) identification bubble 0.5" (12.7 mm) above a horizontal line or left of a vertical line and 0.5" (12.7 mm) away from the rupture disc or equipment.

Here is a complete example of piping and instrumentation diagram created by Edraw.

PID Pump Symbols

EdrawMax: a swiss knife for all your diagramming need

  • Effortlessly create over 280 types of diagrams.
  • Provide various templates & symbols to match your needs.
  • Drag and drop interface and easy to use.
  • Customize every detail by using smart and dynamic toolkits.
  • Compatible with a variety of file formats, such as MS Office, Visio, PDF, etc.
  • Feel free to export, print, and share your diagrams.

More Related

How to Create Process Flow Diagram

Basic Knowledge About Piping and Instrumentation Diagram

Drawing PFDs and P&IDs

Piping and Instrumentation Diagram Symbols

Get Started! You Will Love This Easy-To-Use Diagram Software

EdrawMax is an advanced all-in-one diagramming tool for creating professional flowcharts, org charts, mind maps, network diagrams, UML diagrams, floor plans, electrical diagrams, science illustrations, and more. Just try it, you will love it!