The foundation path
Piping Components, Materials and Specifications
Read any line list, decode any line on it, say what every component is made of and why, and challenge a specification before it reaches a fabricator.
Who this path is for
- Graduate and junior engineers joining a piping, process or projects group
- Engineers moving across from mechanical, civil or instrumentation
- Designers and draughtspeople who produce isometrics
- Procurement staff who buy piping material
- Inspectors and QA staff new to piping
Module 1
Piping System Fundamentals
The six component classes, why the line is the unit of design, who owns which decision, and the chain of documents that turns a process requirement into steel.
Read
- Pipe sizes and schedules — why NPS 2 is not 2 inchesMechanical
- Reading a line class — the document that has already decidedMechanical
- Reading a P&ID — the drawing every discipline works fromInstrumentation & Control
Then practise
Trace one line end to end through all six documents, and resolve a conflict between an isometric and its line class.
Module 2
Pipe Sizes and Dimensions
Why NPS 2 is not 2 inches, what a schedule sets and what it does not, the four checks that fix a wall thickness, and line sizing as an economic decision.
Read
- Pipe sizes and schedules — why NPS 2 is not 2 inchesMechanical
- Line sizing — why pipe diameter is an economic decisionMechanical
Then practise
Work a schedule change through to its effect on bore, hydraulics and NPSH margin.
Module 3
Piping Materials
Decomposing a material grade, why carbon steel is the correct default, the four conditions that force an upgrade, and why plate is a different product form.
Read
- Pipe materials — what the grade on the spec actually meansMechanical
- Plate materials — what vessels and tanks are actually made fromMechanical
Then practise
Select material for a sour service line, then revisit the answer once the depressuring case is considered.
Module 4
Codes, Standards and Specifications
Code versus standard versus specification versus line class, what ASME B31.3 governs, how a class settles hundreds of decisions, and spec breaks.
Read
- Reading a line class — the document that has already decidedMechanical
- Flanges and pressure classes — why Class 150 is not 150 psiMechanical
Then practise
Answer a component question from a class sheet rather than from experience, and take the right route when no class fits.
Module 5
Documentation and Deliverables
The piping deliverable set, why an MTO grows, how spool breaks drive cost, what a test pack contains, and why an out-of-date as-built is a safety problem.
Read
Then practise
Trace a late line size change through six disciplines and identify the partial propagation risk.
Working through this on your own
Read each module's topics in the order listed, then do the practice before moving on. The practice is the part that matters — reading a topic tells you something, applying it to a document in front of you is what makes it stick.
Every topic ends with ten questions. Treat eight out of ten as the bar for moving to the next module.