Quality assurance during assembly of Wendelstein 7-X

To control all the work and test steps during assembly of Wendelstein 7-X for each major assembly task Quality Assurance and Assembly Plans are used as the central managing instrument. These documents ensure that the order of all steps is carried out as planned and that the envisaged quality will be met. The confirmation of a successful working step often is done by tests and measurement. For each test special instructions were prepared to ensure reproducible and correct results. The tests are either carried out by the certified QA inspectors of the project or by specially qualified internal inspectors. The most important tests and measurements are outlined briefly. All quality deviations are assessed in relation of consequences for later operation.