Resources
How commissioning actually works, written by people who run it.
Plain-language guides to the completions process — the sequence, the documents, the terminology, and what changes when the paperwork moves off spreadsheets.
Articles
Guide
Commissioning 101: a guide to digital completions
How commissioning and completions actually work — systems and subsystems, ITRs, punch lists, mechanical completion and RFSU — and what changes when you move the paperwork off spreadsheets.
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Mechanical completion vs pre-commissioning vs commissioning
These four terms are used interchangeably on most projects, and the confusion is expensive — because each stage has a different evidence requirement and a different party carrying the risk.
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ITRs and checksheets: a practical guide
An inspection and test record is the smallest unit of proof on a completions project. Get the ITR structure right and every certificate above it becomes straightforward. Get it wrong and no amount of reporting will help.
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Punch list categories A, B and C explained
The category is the only thing that makes a punch list operationally useful. It is also the thing most projects apply inconsistently, until the category stops carrying information at all.
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Preservation work lists: a practical guide
Equipment gets installed years before it runs. Preservation is the recurring work that ensures it still turns, seals and holds calibration when it is finally needed — and the evidence that it was done.
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Systems and subsystems: how completions scope is divided
Construction is organised by area and discipline. Commissioning cannot be, because plants do not start up by area. The re-cut between the two is the most consequential setup task on a project.
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How to run a commissioning walkdown
A walkdown is the structured physical inspection that gates a milestone. Done properly it produces a categorised, actionable punch list. Done poorly it produces a page of notes and a second walkdown.
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Handover and RFSU: what transfers, and when
Handover is not a document exercise at the end of a project. It is a series of risk transfers, each conditional on evidence, and the dossier is simply that evidence arranged so an operator can accept it.
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Completions and commissioning glossary
Completions has a dense vocabulary and most of it is used slightly differently on every project. These are the working definitions used across the rest of these guides.
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Loop checking and instrument calibration
A loop check is the first moment a project finds out whether the instrument in the field, the cable, the marshalling cabinet and the control system are actually talking to each other. It is also where the most schedule is lost, because failures surface in bulk.
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MCC, DAC, RFC and RFSU certificates explained
Certificates are the only part of completions that leaves the project and enters the contract. Each one is a signed assertion with a named owner, backed by a defined evidence set — and the disputes almost always come from evidence that was assumed rather than checked.
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Measuring commissioning progress that means something
Most completions reporting measures activity — records signed, hours spent, percent complete. Very little of it predicts when a subsystem will actually be ready. The difference between the two is where projects lose their last three months.
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Building a digital handover dossier
The dossier is the only deliverable from completions that outlives the project. It is also the one most often assembled at the end, under time pressure, from records that were never structured for it — which is why closeout regularly takes longer than commissioning did.
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