Each of the two Nord Stream Pipelines is built in three sections. Once completed, the sections must be welded together to form the 1,224 kilometre pipelines. This “tie-in” process takes place on the seabed in an underwater welding habitat. Welding operations are remotely controlled from a support vessel, and divers assist and monitor the subsea construction work.

Nord Stream AG has conducted annual maintenance works on its twin gas pipeline system between September 11 and 22, 2017.

After the temporary shutdown of both lines, gas transmission resumed today, and the full capacity of the pipeline system is now available again, Nord Stream noted.

Nord Stream AG’s maintenance director, Olivier Escola, said: “For the fifth consecutive year, Nord Stream has successfully completed all maintenance activities that require an interruption of gas transport. Our operations and maintenance teams and our contractors have carried out these planned activities safely and on time, and contributed to a reliable, safe, and efficient gas supply to European markets.”

“Regular maintenance work is an essential part of Nord Stream’s long-term Pipeline Integrity Management Strategy. Our technological and engineering expertise is reflected in our operational history. Since the start of operation of our pipeline system, we have reliably fulfilled all transport nominations. The regular maintenance works completed today ensure the reliability of the pipeline system,” Mario Nullmeier, compliance director at Nord Stream AG, said.





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