P&ID ABBREVIATION AND IDENTIFICATION

Abbreviation is used to define:

1. An equipment to specify its type or service.
• Example: For a Pump generally ’AP’ abbreviation is used for numbering. AP1002, AP6009 etc.
• Example: For a Vacuum Pump generally ’AV’ abbreviation is used for numbering. AV1012, AP4007 etc.
• Example: For a storage tank 'ST' and for vessel 'AB' is used for numbering.
2. A pipe line to specify its service.
   
• Example: ‘CWR’ is used for the Cooling Water Supply line.
• Example: ‘HOS’ used for Hot Oil Supply line.
3. An Instrument to define its function.
   
• Example: ‘PRV’ used for control valve to Control Pressure.
• Example: ‘FIC’ used for Instrument which is used to Indicate and Control Flow.

Bellow is list of some abbreviation generally used in a standard P&ID:

DRAIN/SEWER ABBREVIATION



MISCELLANEOUS ABBREVIATION



ABBREVIATION FOR UTILITY SERVICE



ABBREVIATION FOR UTILITY SERVICE




INSTRUMENT ABBREVIATION