Supporting disciplines
Plant context
Piping does not sit on its own. These are the topics the piping material links out to — the drawings you read, the permit that lets you start, the area classification that decides what may be energised nearby, and the steel the rack is made of.
- Topics
- 27
- Standards covered
- 67
Process
What the plant is actually for. Unit operations, refinery and petrochemical routes, pharma manufacturing, and the documents every other discipline works from.
5 topics
What the plant actually does — the shape of a process
Every plant is built from the same short list of unit operations. How a refinery, a petrochemical complex and a pharmaceutical plant differ, and why the process engineer's decisions land on everyone else's desk.
Reading a PFD and the material balance — where every number starts
What a process flow diagram carries that a P&ID does not, how to read a stream table, why mass in equals mass out is the most useful check on a plant, and how design cases become equipment sizes.
Relief and flare systems — what happens when pressure wins
How relief scenarios are worked out, why the governing case is rarely the obvious one, and why nearly every part of a flare exists to stop it becoming the hazard it was built to remove.
Fired heaters — an open flame next to a hydrocarbon inventory
How a furnace is arranged, why the process fluid and flue gas travel in opposite directions, what draught and excess air actually control, and why the purge before light-off is never negotiable.
Heat integration — why the plant reuses its own heat, and what that costs
Feed-effluent exchangers, the temperature approach trade-off, why steam comes at several pressures, and why a well-integrated plant is cheap to run and hard to start.
Rotating Equipment
Pumps, compressors and their drivers, mechanical seals and flush plans, bearings and lubrication, vibration analysis and shaft alignment.
1 topic
Electrical
Hazardous area classification, Ex protection types, cable selection and sizing, earthing, motors and lighting.
6 topics
Hazardous areas — zones, gas groups and Ex protection explained
Why a light fitting in a refinery costs ten times a normal one. Zones and divisions, gas groups, temperature classes, IP ratings, and how to read an Ex certification label.
Cables — construction, selection and why sizing is never just about current
What the layers of a cable do, how power, control and instrument cables differ, the four things that decide a cable size, and why the published rating is never the rating you get.
Earthing and bonding — several different jobs sharing one word
Why a plant has more than one earth, the difference between earthing and bonding, how the neutral earthing decision shapes the whole system, and why static bonding has almost nothing to do with fault current.
Distribution and the single line diagram — the map of the electrical system
How power gets from the grid to a motor, what transformers and switchgear actually do, why protection must discriminate, and how to trace a supply on a single line diagram.
Ex installation and inspection — where compliance is actually won or lost
Certified equipment is the easy part. Glands, unused entries, flame paths, IS segregation and the inspection regime are where hazardous area compliance is genuinely decided.
Electrical commissioning and turnover — from dead to live
Why insulation testing needs electronic devices disconnected and readings corrected for temperature, what a functional test proves that a settings check cannot, why an inhibit register exists, why as-left settings are recorded, and what changes the moment a system is energised.
Civil & Structural
Soil investigation, foundations for equipment and pipe racks, concrete grades, rebar, structural steel and paving.
6 topics
Foundations — how the soil report decides what you build
Safe bearing capacity, shallow versus deep foundations, why vibrating equipment needs a different design, and what the civil engineer needs from the other disciplines.
Concrete and reinforcement — why the mix is the easy part
What concrete grade actually means, why the water-cement ratio decides almost everything, what cover is protecting, and why curing is the most neglected step on site.
Structural steel — sections, connections and why it must be fireproofed
How to read a steel section designation, what makes each shape good at its job, bolted versus welded connections, and why unprotected steel fails in a hydrocarbon fire in about ten minutes.
Plant layout, paving and drainage — decisions you cannot undo later
What a plot plan is actually deciding, why paving and slopes matter more than they look, and why a plant has four separate drainage systems that must never meet.
Underground services and excavation — the part of the plant nobody can see
What is buried under a plant and how it is protected, why trench collapse is the hazard that kills, and why backfill compaction decides whether a road is still level in ten years.
Inspecting and repairing structures — the other forty years
Construction is a small part of a plant's life. What degrades, why the worst mechanisms are the hidden ones, how risk-based inspection decides where to look, and why structures quietly become overloaded.
Instrumentation & Control
Transmitters, pressure, temperature, flow and level measurement, control valves, 4–20 mA, P&ID reading and SIL.
5 topics
What a transmitter is, and why it sends 4–20 mA
How a field instrument turns a physical quantity into a number the control room can use, why the signal starts at 4 mA instead of zero, and how to pick a measurement principle.
Reading a P&ID — the drawing every discipline works from
How a P&ID differs from a PFD, decoding instrument tags and bubbles, following a control loop across the sheet, and the details that decide what gets built.
Safety instrumented systems and SIL — the layer that acts on its own
Why protection is kept separate from control, what a SIL number actually measures, how voting trades spurious trips against missed ones, and why a bypass left in is the classic failure.
Instrument installation and loop checking — where most readings go wrong
Hook-up drawings, why impulse lines must slope the right way, what a manifold is for, and the commissioning sequence that catches problems before the plant does.
Alarm management — why an operator with 400 alarms has none
What an alarm is actually for, why a flood during an upset removes the help exactly when it is needed, what a standing alarm costs, and why adding an alarm is a design decision rather than a configuration change.
HSE
Risk assessment and the hierarchy of control, permits and isolation, working at height and lifting, occupational health, and emergency response.
4 topics
Risk assessment and the hierarchy of control
The difference between a hazard and a risk, why PPE is last and what that actually means on site, how a job safety analysis differs from a site risk assessment, why a high near-miss reporting rate is a good sign, and what stop work authority costs the first time somebody uses it.
Energy isolation and lock-out — proving dead, not assuming it
Why a closed valve is not an isolation, what a personal lock actually protects, the energies people forget because they are not electrical, and why the return to service kills as often as the isolation does.
Permit to work — how a plant decides a job is safe to start
What a permit actually is and what it is not, why proving an isolation matters more than making one, why confined spaces kill rescuers, and the ways a permit system quietly becomes paperwork.
Incident investigation — finding the cause rather than the culprit
Why "operator error" is where an investigation stops rather than where it ends, what a near miss is worth, how the timeline is built before any conclusion, and why the most useful investigations happen when nothing was damaged.