Nord Stream 2 was never activated.
Now its permits have been pulled, and the holding company that managed it has laid everyone off and gone into bankruptcy.
I don’t know if there are scrap turbines that could be cannibalized on Russian territory, but this is a big problem across the whole of the Russian oil and gas sector. Even if they have inactive turbines at the defunct facilities, they probably would normally use Siemens experts to install and activate them.
There is a wholesale embargo on critical parts, equipment, software and expertise; from stem to stern throughout that industry in Russia. There is a cascading effect through their oil and gas supply chains, as critical components go offline. The foreign experts who have been supporting their systems for decades have walked off the job, en masse.
No doubt they are scrambling to McGyver a bunch of band aid solutions, but it is not going to be pretty.
I know people in the industry and everything you hear in propaganda is just plain wrong. There are domestic Russian turbines used elsewhere, Siemens is a thing for German projects for political reasons.
The Russians normally serve foreign stuff themselves, including using CNC tools to make parts for them.
The story is probably a joint trick of Gazprom and Siemens to show how stupid the sanctions are.