A tower segment with a scratch, a decision at 87 meters up, and an expert who, nine months later, must be able to retrace everything. A wind turbine installation seen from an East Frisian perspective — told backwards.
A scratched tower segment, a decision at 87 meters, and a link instead of a 400-page PDF: how one installation case was documented so that nine months later, every piece of evidence still held up on its own.
Coating damage near the flange, spotted before the crane took the load. Component acceptance begins as a structured record: identifier, delivery note, photos from four defined positions, weather, time — and who was present.
Delivery note says loading at 2:40 p.m.; the factory photo carries a 5:05 p.m. timestamp. The system poses the question, the human answers it: a typo — caught in March, not in December.
No network in the tower: the fitter dictates on his wrist, recordings keep their time and order on the device and upload exactly once during descent — with three climbs a day, no duplicate entries.
One context, access logged, every piece of evidence individually recomputable. The handover package comes with index and checksums — and a viewer the opposing side can open offline and check themselves.
“We build plants that stand for 25 years. It would be silly to keep documentation that lasts three years.”
Scenario story: Nordkap Windmontage is a fictional example company. The story shows the target build-out of Gewerkton; individual features are in beta or under development.
A Link with an Expiration Date
Dr. Annegret Vahl is a certified expert for wind energy systems and usually works with whatever her client sends her. That is typically a 400-page PDF in which the photos have been compressed twice and the sequence does not match the chronology.
This time she receives a link. It is valid for 21 days, leads to exactly one context — the installation history of turbine 4 of the Fehnhorst wind farm — and logs that she has opened it. She does not see the project of Nordkap Windmontage GmbH. She sees the case she has been commissioned for, and the pieces of evidence attached to it.
Vahl says that convenience is not the main point: “It is verifiable. With a bundle of PDFs I have to believe that the selection is complete. Here I see the chain and can recompute every piece of evidence individually.”
construction site documentation software
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March 11, 6:15 a.m.
Nine months earlier. The third tower segment arrives at the construction site on a heavy-haulage truck, and site manager Sören Petersen spots the scratch before the crane takes the load: damage to the coating near the flange, about 30 centimeters, sustained somewhere between the factory and East Frisia.
In the old world, this is where a chain of phone calls begins, a photo via messenger, and a note that no one can find three weeks later. At Nordkap, a component acceptance procedure begins: the segment’s identifier, the delivery, the delivery note, condition on arrival, photos from four defined positions, the extent of the damage with a scale in the image, weather, time, persons present — as a structured record.
The last point sounds like bureaucracy and is the most valuable one. Nine months later, no one remembers who was present at the acceptance — unless it is recorded on the case.
And then something happens that Petersen still describes today as the thing that convinced him: the platform flags a contradiction. The delivery note shows loading the previous day at 2:40 p.m.; the factory photo of the component carries a timestamp from the same day at 5:05 p.m. — after the stated loading. The system asserts nothing, it accuses no one, it poses a question to the human: these two pieces of evidence do not fit together. The clarification turned up a typo in the delivery note. But it turned it up in March, not in December.
87 Meters
The decision is made up high. Whether the segment may be installed is decided neither by the fitter nor by the software, but by the turbine manufacturer’s specialist engineering department — and it needs images.
Fitter Lasse Brinkmann climbs with a safety harness, a radio, and two free hands — free hands because he starts his dictation on his wrist. He speaks what he sees: coating, flange face, bolt pattern, condition of the sealing surface. There is no network in the tower; the recordings and photos stay on the device, with their time and their order, and make their way into the platform exactly once during the descent. Duplicate entries are ruled out — with three climbs a day, that is no minor detail.
The approval comes in the afternoon, with a condition: recoating according to the manufacturer’s specification, documentation before and after. Both are attached to the same case. What Nordkap never does in this is formulate the assessment itself. The wind industry templates — existing plant and interface, component acceptance, documenting an installation section — were obtained by the company as a package and adapted to its own plant and assembly identifiers; they query condition, extent, position, conditions, and evidence, and they do not issue any technical approval; every point visibly carries the notice that it is documentation assistance and not a specialist inspection.
What Cannot Be Seen from Above
Two weeks later, a drone flies over the wind farm. The footage enters the chain of evidence with checksums; it remains traceable which version of the images was created when, and that it has not been altered since.
For site setup, Nordkap works in the browser: crane standing areas, access routes, storage areas, and heavy-load radii as a layer over the site plan, with the constraints that matter on a field in East Frisia — soil conditions, turning radii, distance to residential development. For the interface between the existing plant and the extension, Nordkap’s technician captured the existing substation herself as existing geometry, because there was no model for it, only as-built plans from two decades.
At the end, the plant operator receives not a binder but a handover data set: plants with identifier, location, product data, document references, plus the maintenance intervals and recurring inspections. From this point on, it is no longer the construction site that keeps the file, but operations — the same chain, a new audience. When, four years from now, an inspection report is produced on the connection in the third segment, it will hang on the same component as Brinkmann’s dictation from March 11.
Back to the Link
Vahl works her way in two and a half hours through what would previously have taken her two days. What she appreciates about this kind of documentation is less the completeness than the labeling.
Every artifact carries its level: is this a photo with an anchored timestamp or one without? Is the finding confirmed or an unconfirmed suggestion? Is the text the original or a translation? For the feedback from the Polish-speaking installation crew, the spoken original stands first-class beside it; the translation is marked as assistance.
“In fifteen years I have not seen documentation that comes with its own limitations,” says Vahl. “Most of the time I see documents that claim more than they show. I can’t do anything with those.”
From the events related to the component, she generates the chronology as a table: date, event, evidence. Her client receives from it a handover package with an index and checksums — expressly marked as evidence material, without legal assessment, and with a viewer that the opposing side can open offline and check themselves. A piece of evidence the other side is allowed to recompute is worth more than one you are supposed to believe.
It never came to proceedings. Vahl’s report established that the recoating had been documented and carried out according to specification. The dispute ended before it became one.
The Unspectacular Ending
For the rollout, Nordkap purchased support for the first half-year, because three site managers had to switch over at the same time and the installation season shows no mercy. The fitters practiced on a training project where nothing can be broken; the training records are attached to the crews, and two operators now ask for them in tenders.
At the end of the project, Fehnhorst moves to the archive. Retention obligations for plant documentation outlast site managers, companies, and sometimes operators; read access for a fraction of what an active project costs is the only answer that does not put Nordkap in the awkward position of having to choose between “keep paying for everything” and “export and guard it yourself.”
Petersen puts it this way: “We build plants that stand for 25 years. It would be silly to keep documentation that lasts three years.”
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