and claimed the reduction was due to a repaired turbine in Montréal, Canada, that could not be delivered due to sanctions against Russia. The German government denied this claim and believed there was no reason for reducing the flow. Meanwhile, during a press conference in Tehran, Putin said that these flows could be increased again if Russia receives more turbines from the manufacturer. On 31 August 2022, Gazprom halted any gas delivery through Nord Stream 1 for three days, officially because of maintenance. On 2 September 2022, the company announced that natural gas supplies via the Nord Stream 1 pipeline would remain shut off indefinitely until the main gas turbine at the Portovaya compressor station near St Petersburg was fixed due to an engine oil leak. Gazprom justified this by claiming that European Union sanctions against Russia had resulted in technical problems, preventing it from providing the full volume of contracted gas through the pipeline; Siemens Energy, which maintains the turbine, rejected this and stated that there are no legal obstacles to its provision of maintenance for the pipeline. 2022 gas leaks On 26 September 2022, multiple ruptures in the NS1 and the NS2 pipelines were detected in what appeared to be an act of sabotage. Unexplained large pressure drops were reported in both pipelines at the end-station in Germany. A gas leak from NS2 was located late on 26 September. Early on the 27th, two separate leaks in NS1 were discovered. They occurred in international waters, but within the Danish and Swedish exclusive economic zones. Both Berliner Zeitung and Le Monde newspapers suggested acts of sabotage, and a Kremlin spokesman also said it could be. Neither pipeline was in operation at the time of these incidents, but both did contain gas. The rupturing of the Nord Stream pipelines happened as the Baltic Pipe was being opened for natural gas to come in from the North Sea through Denmark to Poland. , the Yamal–Europe pipeline is operational, although "There are concerns that if Russia introduces sanctions against Ukraine's Naftogaz [...] that could prohibit Gazprom from paying Ukraine transit fees [... that] could end Russian gas flows to Europe via the country." Technical features Russian onshore-pipeline Nord Stream is fed by the Gryazovets–Vyborg gas pipeline. It is a part of the integrated gas transport network of Russia that connects the existing grid in Gryazovets with the coastal compressor station at Vyborg.