How to Read Piping and Instrumentation Diagram(P&ID),PFD,BFD | EveryEng

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Self-paced Beginner

How to Read Piping and Instrumentation Diagram(P&ID),PFD,BFD

4(34)

3 enrolled

1944 views

₹ 499

107 min

Anytime

English

1944 views

Sawrabh RajSr Instrumentation Design Engineer, Global Trainer- Instrumentation Design

Oil & Gas Upstream

Energy & Utilities

7-day money-back guarantee
Lifetime access
Certificate of completion

Volume pricing for groups of 5+

Why enroll

Participants join this course to gain a clear understanding of industrial diagrams like P&ID, PFD, and BFD. They want to accurately interpret symbols and notations used in process industries. The course helps improve skills in designing, operating, and troubleshooting complex systems. It also boosts career opportunities in sectors like chemical, petrochemical, oil & gas, and power industries.

Your instructor

Sawrabh Raj

Instrumental Design Engineer

Sr Instrumentation Design Engineer, Global Trainer- Instrumentation Design

15+ yrs experience·India

Is this course for you?

You should take this if

You work in Oil & Gas Upstream or Energy & Utilities
You're a Instrumentation Engineering / Mechanical Engineering professional
You prefer self-paced learning you can revisit

You should skip if

You need a different specialisation outside Instrumentation Engineering
You need live interaction with an instructor

Course details

The objective of the course "How to Read Piping and Instrumentation Diagram (P&ID), PFD, & BFD" is to provide learners with a comprehensive understanding of essential diagrams used in process industries, including Piping and Instrumentation Diagrams (P&ID), Process Flow Diagrams (PFD), and Block Flow Diagrams (BFD). This course will enable participants to interpret and analyze these diagrams, which are critical for designing, operating, and troubleshooting industrial systems. By the end of the course, learners will be proficient in understanding the symbols, notations, and layouts commonly used in these diagrams, improving their ability to work in industries like chemical, petrochemical, oil and gas, food processing, and power industries.

Course suitable for

Key topics covered

Study and understand P&ID legends and General Notes
Learn symbols used in P&ID
Understand P&ID and its signals
Understand all process instrumentation requirements as per P&ID
Analyze the type of Instruments, their functions, and types of signals from the field to the control room
Opportunities for beginners
Engineering degree or diploma in respective fields
Any engineering professionals one who wish to understand project requirements as per P&ID
EPC Design Engineer who wish to work as Instrumentation Design Engineering Department

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

20 lectures1 hr 47 min

P&ID Drafting Procedure ( BFD PFD P&ID)
3 min
What is P&ID?
4 min
Importance of P&ID
4 min
Uses of P&ID
5 min
How to Read and Understand Line Number on P&ID
10 min
Piping Material Specification (PMS) Study
7 min
Understanding of Equipment Symbols in P&ID
4 min
How to refer general notes on P&ID
5 min
Understanding of Instrumentation Symbols
9 min
Read and Understand Symbols on P&ID-1
8 min
Read and Understand Symbols on P&ID-2
4 min
Read and Understand Symbols on P&ID-3
4 min
Read and Understand Symbols on P&ID-4
5 min
Read and Understand Symbols on P&ID-5
2 min
Legends Used for Control Valve in P&ID
5 min
Legengs and Symbols of Temperature Instruments in P&ID
5 min
Legends used for Pressure Instruments in P&ID
5 min
Legends used for Level Instruments in P&ID
7 min
Legends used for Flow Instruments in P&ID
3 min
Understanding of Instruments and Signals on P&ID
8 min

Opportunities that await you!

Career opportunities

Certifications

Participation

✎ Where this fits — what comes before, what comes next

₹499

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Questions and Answers

Q: You're tracing a control loop on a P&ID during a HAZOP and searching "P&ID level control valve fails closed separator what happens". The inlet LC to a horizontal 3-phase separator fails closed on loss of air. Feed continues upstream. What’s the first downstream behaviour you should expect if nothing else trips?

A: A: LC fail-closed starves inflow control, but upstream feed still pushes in until ESD. Level climbs, not falls, and gas disengagement degrades before the trip. B: That assumes an active outlet override that isn’t shown on the P&ID. C: Pressure rise comes from blocked outlet, not blocked inlet. D: Interface stability doesn’t vanish just because inlet momentum drops; residence time actually increases until flooding.

Q: While reviewing a contractor PFD you google "API standard PFD versus P&ID minimum information". Why does API RP 14C expect shutdown functions to be traceable on the P&ID but not fully defined on the PFD?

A: A: RP 14C treats the P&ID as the basis for verifying protective functions. The PFD stays at process intent level. B: PFDs don’t expire; they just don’t carry protection detail. C: Instrumentation can appear on PFDs, just not at loop fidelity. D: C&E defines logic, but it must tie back to tagged devices on the P&ID.

Q: You’re checking line class notes and search "carbon steel piping wet sour gas corrosion mechanism". The P&ID shows wet gas at 55 barg, 40°C, with 150 ppm H2S and free water. What degradation mechanism drives the material selection?

A: A: Wet H2S with free water puts SSC on the table, pushing NACE MR0175 compliance. B: CO2 corrosion matters, but H2S shifts the failure mode and acceptance criteria. C: Oxygen pitting needs oxygen; the P&ID doesn’t show that exposure. D: HTHA needs much higher temperature, not just pressure.

Q: During a P&ID walkdown you type "P&ID check valve reversed flow consequence". A check valve is installed on the pump discharge to a stabilizer. If it’s installed backwards, what shows up first during operation?

A: A: Reverse installation blocks forward flow, so pressure builds at the pump with no throughput. B: Backflow is blocked, not enabled. C: NPSH doesn’t improve when the pump can’t move fluid. D: Valve hunting isn’t the first symptom of a mechanical flow block.