Laser scanning for optimized processes in brownfield projects
Bietigheim-Bissingen, July 2017 – Three-dimensional, fast, and precise: laser scanning is the most modern measurement method for buildings. Dürr is using the efficient method worldwide in its paint shop modernization and expansion projects. When the scan data is combined with the plant plans in 3D, virtual models reveal possible collisions upfront. Translated to reality, this means shorter installation times, reduced conversion costs, and smooth processes.
Laser scanning has revolutionized property surveying. The laser beam records all relevant building features like parapet heights, doors, or cable ducts as well as existing production facilities. This will be done even in hard-to-access areas, in a non-contact measurement and from distances of up to 130 m. A software program then generates real, detailed images from the data. “When working on brownfield projects, we are frequently confronted with the situation where there is either no documentation any more for factories and the sections they contain, or just analog original plans that have never been updated,” says Marc Altmann from the Engineering department at Dürr Systems AG in explaining the problem.
For large industrial buildings, the data consist of hundreds of individual scans that are precisely matched using reference points. They provide a way of reviewing whether a customer’s vision is compatible with the structural conditions and the engineering of a painting line or final assembly line – namely at a very early stage. Dürr uses the method as early as during the tendering phase. Special computer technology processes the large volume of the scanning data and transfers it as photorealistic images or videos to the so-called Powerwall at the Dürr Campus in Bietigheim-Bissingen.
“We can take a virtual tour of any building, no matter where it is in the world, together with our customers here in the Powerwall room. With this method a paint shop can be executed as planned with a high degree of certainty when it comes to quality, schedule, and costs,” explains Marc Altmann.
Laser scans identify all eventualities
In the next step of the process, the laser scans bring reality into the engineering department. Regardless of where a site is located, a design engineer can view the realistic image at his or her desk in Bietigheim-Bissingen. The exact scans have an accuracy of +/- 2 mm. A conventional measurement using a ruler or manual laser measurement could not reach this level of precision. Forgotten measurements can also be easily added on the screen.
Dürr is now using laser scanning almost as standard in modifications and expansions. In view of the growing requirements and the increasing complexity involved in the construction of paint shops, the innovative measurement method makes a valuable contribution to projects going smoothly on site.