1. －P&ID－ Piping & Instrument Diagram

2. What is P&ID Basic Engineering document
Indicating -Process Requirement Equipment in the Plant -Piping and Piping Component -Instrument and Logic　Relations

3. What should be indicated on P&ID?
Process requirement
- PFD : all line and flow, every item
- not on PFD : relieving system, pump minimum flow,
compressor anti surge flow, isolation system
- item for maintenance, operation, pre-commissioning,
commissioning, start-up

4. What should be indicated on P&ID?
Equipment
- all equipment with exact number and components :
all nozzles, manholes, internals
- type of connection to piping
- equipment item number, service name, major
specification

5. What should be indicated on P&ID?
Piping
- all lines for normal operation, startup, shutdown,
emergency, special operation, and maintenance
- all piping components (valves etc.) and
notes on them (CSO, CSC, TSO)
- line information : line no., size, fluid symbol,
piping service class, insulation
- configuration requirement : No Pockets, Free Draining

6. What should be indicated on P&ID?
Instrumentation
- instrumentation for controlling, monitoring, emergency shutdown,
sequence control, interlock, automatic start/stop
- field instrument
- control and shutdown valves with their type, size, failure status
- pressure relief valves with their set pressure and size
- kind of signal : pneumatic, electric, hydraulic, capillary tubing,
softlink

7. What should be indicated on P&ID?
Other
- battery limit between client and contractor
- area battery limit
- change of responsibility between Piping and Instrument,
Contractor and Vendor
- extent of packaged equipment supply
- breaks of line information :
line number, piping service class, insulation

8. What information can you get?
For Equipment Outline/Internals
For Piping Line No./Size/Material/Insulation/Line Configuration/Piping Component Type
For Instrument Tag No./Function/Control Method

9. P&ID is used for
Detail Engineering of each disciplines Piping layout/Material Purchase Instrument Logic/DCS Plan, etc
Planning of Construction/Commissioning/Plant Operation/Maintenance

10. How to Develop/Finalize
Process Verification Proj.Spec Discipline Comments
P&ID IFA
Company Comments
HAZOP
SIL Study, etc.
P&ID IFH
Detail Design Feedback
Field Change Feedback
P&ID IFC
P&IDAs Built
Vendor Data Input

12. P&ID Symbols

13. P&ID Symbols

14. P&ID Symbols

15. P&ID Symbols

18. P&ID Practices

19. Control valve loop

20. LT/FT Cascade Control

21. Split range control(1)

22. Split range control(2)

23. Place equipment and its components
Connect main piping
Complete control valve loop
Place other instrument and connect signals
Indicate safety devices incl. alarm
Place piping components (Valve/Fitting) as required
Check detail and add items required incl. vent/drain connection