Watch a turnaround crew for a full shift and a pattern usually appears. The crew waits for the permit to be signed, walks to the job, finds the scaffold is not tagged, waits for a crane, then stops for an inspector who is busy on another unit. Each delay is short. Together they can consume a large part of the shift. Managing productivity during a plant turnaround means removing those delays faster than they appear. What follows shows where turnaround time goes and how turnaround managers, area coordinators and supervisors recover it.
What does turnaround productivity mean?
Turnaround productivity is the share of paid crew time spent completing planned work, and the rate at which that work is completed compared with the plan. It depends far more on preparation and site organization than on how hard individual workers try.
Where turnaround time goes
| Loss | Typical cause | Countermeasure |
|---|---|---|
| Waiting for permits | Permit office overloaded at shift start | Prepare permit packs in advance, add issuers at peak |
| Scaffold not ready | Access demand underestimated | Pre-erect scaffold before shutdown where safe |
| Missing materials | Materials not kitted by job | Kit materials by work pack and stage near the job |
| Crane conflicts | Shared cranes double-booked | Central crane schedule reviewed every shift |
| Inspection holds | Inspectors unavailable on the shift | Plan inspector coverage per area and shift |
| Unclear job steps | Incomplete work packs | Complete and field-verify packs before shutdown |
| Travel and congestion | Welfare and tool cribs far from units | Place rest areas, water and tool points near units |
| Poor shift handover | Information lost between shifts | Structured handover at the workface |
Productivity is built before the shutdown
Most productivity losses are decided during preparation. Complete work packs, kitted materials, pre-erected scaffolding, prepared permits, a realistic crane plan and welfare points near the units remove the most common delays before they happen. The readiness items behind this are listed in the shutdown readiness checklist.
Constraint removal during execution
Even well-prepared turnarounds hit constraints. The response should be fast and organized:
- Supervisors at the workface, not in the office, so blockers are seen immediately.
- A constraint log per area, reviewed at every shift meeting, with an owner and deadline for each item.
- A small response team of a planner, a materials coordinator and a scaffold coordinator who can clear blockers quickly.
- Backup work ready for crews whose main job is blocked, so waiting time becomes productive time.
Measuring productivity
Two simple measures help. First, compare earned hours, based on completed job steps, with actual hours worked, by area and contractor. Second, run occasional work sampling: short, structured observations of what crews are doing, grouped into categories such as working, waiting, traveling and planning. Sampling shows where time is lost in a way timesheets cannot. The data side is explained more fully in managing productivity data on industrial construction sites, and its use in schedule control in shutdown schedule controls for critical path work.
Small changes that recover hours
- Prepare and pre-approve permits during the previous shift, so crews start with permits in hand
- Put drinking water and shaded rest areas within a short walk of each unit
- Issue tool kits by crew at shift start rather than one person at a time
- Keep a small stock of common consumables, such as gaskets, bolts and grinding discs, in each area
None of these is expensive, and together they recover time on every shift.
Fatigue lowers productivity
Long shifts over many consecutive days reduce output per hour and increase mistakes. Pushing extra hours late in a turnaround often gains less than expected and adds risk. Plan rest days and relief crews for longer turnarounds, and watch for falling productivity on night shifts.
Contractors and crews
Productivity also depends on how contractors work together and how crews are led. Coordination between contractors is covered in contractor coordination during plant turnarounds, and crew-level performance in managing skilled trades workforce performance on site.
Apex Core Engineering supports turnaround productivity with planners, coordinators and supervisors through its project support services, as part of its turnaround execution support.
Frequently asked questions
What causes most productivity loss in turnarounds?
Waiting: for permits, scaffolding, materials, cranes and inspection. Most of these are preparation and coordination issues rather than workforce issues.
What is work sampling?
A method of making short, structured observations of crews at random times and classifying what they are doing, to show how time is actually spent.
Does adding more workers always speed up a turnaround?
No. Beyond a point, congestion, supervision limits and shared resources reduce productivity per worker, and safety risk rises.
Improve turnaround productivity with Apex Core Engineering.