How does a 3D scan work while operations continue?
The fear that everything must stop for a capture is the most common reason projects get postponed. In most cases it is unfounded.
A capture is not an intervention in your operations but a walkthrough with a tripod. Even so it helps to know the process — above all because a few decisions beforehand determine the quality of the result.
Beforehand: the one important question
We first clarify what the data is for. A capture for a tender looks different from one for a BIM model, and a tour for staff briefings needs less accuracy than a volume calculation. Deciding this upfront means scanning once instead of twice.
Then come the practical points: which areas are included, which stay out, when the site is quietest, and which requirements apply.
On site: position by position
The scanner sits on a tripod and samples its surroundings from each position. Then it moves on — every few metres for a laser scan, depending on layout. One person accompanies the instrument; no further staff are needed.
We work area by area: one section after another, agreed with your operations management. Production, consultations or public access usually continue. Anything that should stay out of frame is identified in advance.
For plants with safety requirements we plan the walkthrough together, including briefing, escort and protective equipment. On projects such as capturing a blast furnace this is a given.
Afterwards: registration and derivation
The individual scans are merged into one overall point cloud — this step is called registration and determines the quality of the entire model. From it the agreed outputs are derived: floor plans, sections, BIM foundations or a walkable tour.
What you need to prepare
Very little. Tidy areas help the result but are not essential — as-built documentation should show the actual state, not a staged one. All that really matters is access to the relevant areas and a contact who can open doors.
More on the technology on the 3D scanning page.