Guide
Shutdown cleaning: fitting a factory clean into the window
Updated
The shutdown is where industrial cleaning is either cheap and finished or expensive and half done. The difference is almost entirely planning that happens weeks before anyone arrives with a hose.
The window is the constraint, not the work
A contractor pricing a shutdown clean is not pricing hours, they are pricing enough crew and equipment to finish inside a fixed period. Give them a longer window and the same work costs less, because it can be done with fewer people at normal rates. Where the window genuinely cannot move, say so early: the resourcing decision is the price, and a contractor who finds out late will either add cost or run out of time.
Sequencing with everyone else in the plant
- Cleaning usually goes before and after engineering, not with it. Cleaning a machine that is about to be opened up wastes the clean; cleaning after mechanical work catches what the fitters left.
- Isolations and permits gate everything. Agree who issues them and when, and have them ready before vehicles arrive. Standing time is charged time.
- Dismantling responsibility should be explicit. Guards, covers and product contact parts are often taken off by your engineers and refitted by them, and a quote that assumes otherwise will change.
- High level before low level. Obvious, routinely forgotten, and expensive when the floor is cleaned twice.
- Handback needs a standard. Agree what finished looks like, and who signs it off, before the crew starts rather than at 4am on the last night.
Out-of-hours and rolling programmes
Not every site can stop. Where production runs continuously, the alternative is a rolling programme: one area, line or zone at a time, at nights or weekends, with the same total work spread over months. It usually costs more per hour and less per year than a single crisis clean, and it keeps the plant in a condition where each visit is quick. Ask contractors to price the shutdown option and the rolling option against the same scope, then decide with both numbers in front of you.
Agree the overrun terms before you need them
- Set the rate for an additional shift in the original quote, so nobody negotiates at 2am.
- Define the priority order of areas, so that if time runs short the right things are finished.
- Agree the variation process for additional work spotted on site, even if it is a signed note in a site diary.
- Book a debrief. Ten minutes at the end of the shutdown, written down, is what makes the next one cheaper.
Where a shutdown clean includes vessel entry or high level work, plan those elements first and everything else around them: they carry the permits, the specialist crews and the longest lead times. See confined space and high level cleaning.