Planning a plant shutdown so it finishes on time

Shutdown and turnaround services are part of what we offer, and the pattern is consistent across plants: the shutdowns that finish on time are the ones that were planned in detail weeks earlier. The ones that overrun were planned in the first week of the shutdown itself.

Start from the end date, not the start date

A turnaround has a hard commercial deadline — every extra day is lost production. So the plan is built backwards from restart: what must be done last, what must be finished before that, and what can only happen while a particular line is depressurised.

Review the procedure before you trust it

Most plants have a turnaround procedure from last time. It is a starting point, not a plan. Equipment has changed, some jobs from last time are no longer needed, and new ones have appeared. Reviewing and revising that procedure is the first task, and it is where most of the value is created.

Assign four things, in writing

• **Craft** — who does each job, and from which trade
• **Man-hours** — how long each job really takes, not how long you hope
• **Spares** — what must be on site before the shutdown starts, not ordered during it
• **Tools and tackle** — including lifting gear, and who is bringing it

A job with no named crew, no realistic duration and no spares on the shelf is not scheduled. It is a wish.

Safety and permits are on the critical path

In a turnaround, permits are not paperwork around the work — they are the work's timing. Isolation, purging, gas testing and hot work clearance all take time, and several crews will be waiting on the same permit desk. Plan the permit sequence with the same care as the mechanical sequence, or the plan collapses on day one.

Inspect early enough to react

Opening equipment reveals work nobody scheduled. That is normal and should be expected. The value of inspecting early in the window is that there is still time to get a part, mobilise a crew or change the sequence. Inspect on the last two days and the discovery becomes an overrun.

Close it out properly

A turnaround report — what was done, what was found, what was deferred and why — is what makes the next shutdown shorter. Skipping it means starting the next one from the same blank page.