Important technical terms

Witness point
That means a "witness point" indicated on the route card, which signalizes, that a person authorized to do so wants to witness an operation and is to be informed in advance. The operation, however, can be executed, when the authorized person or a person representing him/her is not present.

Working pressure
Is the pressure which arises e.g. in a conduit pipe under operating conditions.

Works certificate
In the works certificate, the manufacturing or processing plant confirms with test results from the running operational test of products from the same material and the same manufacturing type as the delivery itself that the delivered product complies with the agreements of the order.

Works' test certificate
In the work's test certificate, the manufacturing or processing plant confirms with results from tests at the delivery itself or at test units determined in the standards, of which the delivery is one part that the delivered product complies with the agreements of the order.