As of October 4, the gas-in procedure for the first string of the Nord Stream 2 pipeline has started. This string will be gradually filled to build the required inventory and pressure as a prerequisite for the later technical tests.
Previously, the first string of the pipeline underwent pre-commissioning activities to assure the pipeline integrity.
This included the internal inspection by special devices (pipeline inspection gauges), as well as external visual and instrumental surveys of the pipeline. Nord Stream 2 will inform about further technical steps in due time.
The pipeline is built and independently certified according to applicable technical and industry standards to ensure reliable and safe operations. Pre-commissioning steps for the second string are ongoing.