How do we run a trainee programme without slowing live projects?

A graduate engineer trainee joins a controls firm in the week of a big factory acceptance test. The senior running the test is told to look after him. For a fortnight the trainee stands behind his chair, asks fair questions at bad moments and gets odd jobs with no context. The test slips by two days. The senior says trainees slow everything down. The trainee says he learnt nothing. Both are right.

The trouble is not the trainee. It is a programme made of one person and one project, with nothing in between.

Give each trainee a named mentor and a fixed list of tasks of their own. Each task moves from observed, to supervised, to independent, and the mentor signs each step. Review progress every few weeks. Keep early tasks away from anything a customer is waiting on. The automation and robotics hub page names a structured ramp for fresh hires as one of the sector's recurring needs.

• The mentor is also the project lead. In a test week, teaching loses every time, and the mentee learns that questions are a nuisance.
• The trainee has no work of their own. Without a list, they wait for odd jobs and hover at elbows.
• Tasks arrive by chance. Whoever is free hands over whatever is lying about, so learning follows no order.
• Mistakes land on live code. A wrong online edit or a forced input on a running machine costs a customer, not a training budget.
• There is nowhere to practise. Every keystroke happens on a real job, so seniors hold back anything that matters.

The ladder holds real tasks the firm needs done anyway, sorted in the order a trainee can learn them. Most of it is work seniors put off: tag lists, documentation, test scripts, backups. Done by a trainee under review, it moves the project forward instead of holding it back.

OBSERVED: read the I/O list against the panel drawing and mark every mismatch.
OBSERVED: sit in on one factory acceptance test and log each fault raised.
OBSERVED: watch a loop check and a point-to-point wiring test.
SUPERVISED: build the tag database for one HMI screen from the I/O list.
SUPERVISED: write and run a simulator test script for one machine sequence.
SUPERVISED: mark up as-built drawings after the changes made at FAT.
SUPERVISED: take and label program backups under version-control, then update the backup register.
INDEPENDENT: draft an alarm list for a new job from the firm's template.
INDEPENDENT: test a new function block on the practice rig before it reaches a project.
SIGN-OFF: each line on the task-card dated and initialled by the mentor. HR files the card.

Pick a mentor who is not leading a test or a site handover in the trainee's first month. Trim their project load a little and write the reduction into the plan. Count mentoring in their appraisal, so it reads as real work rather than goodwill. One mentor can handle two trainees well. Three is a classroom. After a few months, rotate trainees to a second mentor so they pick up more than one engineer's habits. The learning and development process keeps the plan, the sign-offs and the review dates in one place.

Every automation job has steps a customer is waiting on. Online edits on a running line, drive and servo tuning, safety circuit changes and the commissioning calls themselves all sit there. Trainees watch these first and touch them last. Everything else can be shared. Tag databases, documentation, simulator tests and wiring checks matter, but a slip there costs an hour, not a plant.

Put together a small rig from spares. A PLC from an old job, a small HMI, a few I/O cards, a valve-island, proximity switches, a selector switch and a geared motor on a cheap drive will do. Trainees write ladder-logic and structured-text, break it and fix it here, in a sandbox nobody depends on. New function blocks get proved here before they go near a customer. In quiet weeks, the rig also gives the bench something worth improving.

1. 1

   Check the card

   Mentor and trainee go through the ladder. Which lines moved from observed to supervised, and which are stuck?

2. 2

   Review one piece of work

   The mentor picks one tag list, script or markup and goes through it with the trainee. Fifteen minutes is enough.

3. 3

   Set the next three tasks

   Named, dated and tied to the project they belong to. The trainee leaves knowing what Monday holds.

4. 4

   Decide on site readiness

   A supervised site visit goes on the calendar only when the safety induction is signed and the supervised lines are done.

• How many trainees can we take at once? As many as you have protected mentors, two each at most. A trainee with no mentor is a cost with no plan.
• When can a trainee go to site? After the safety induction and the supervised lines are signed. First visits are with a mentor, on tasks nobody is waiting for.
• Do we bill the customer for trainee hours? Only for work the customer would pay for anyway, such as documentation, and only if the contract allows it. Never bill time spent watching.
• What if trainees leave after a year? Some will. A visible next grade and pay step, shown at joining, keeps more of them than pressure does.

Draft the ladder for one role first, usually the graduate controls engineer. Build it from tasks your seniors already do and dislike. Name the mentors before the trainees join, not after. The learning plan page for SCADA firms and the helper path for panel builders show the same idea applied in two trades. Our post on why fresh graduates need a structured ramp goes further into the first year.