What happened at Nord Streams, after all?
For now, only one thing can be said for certain: they were destroyed. Three strings out of four were destroyed, two from Nord Stream 1, and one from Nord Stream 2. We know for certain that big holes appeared in the pipelines through which gas comes out. It seems that most of the gas has already come out. According to the latest news, there’s another gas output, it’s unclear whether it’s from the fourth string or not. This is the only thing we can say with certainty.
But Swedish seismologists registered explosions in that location.
I was just about to mention that. It’s true, Swedes did register some seismologic occurrences that, according to their analysis, weren’t earthquakes. They’re saying that it’s more likely to have been an explosion of around 100 kg in TNT equivalent.
There’s another reference point — a document, which I will probably continue referring to. When pipelines are being prepared for use, a construction permit is given out and a certification process is conducted by regulatory bodies of the countries that have control over the track [along which the pipeline is built]. In our case, it’s Denmark. All of these documents are public, in particular, they are posted on the website of the Dutch regulator body, they’re written in English, one can find them and read them. In these documents, it’s stated, among other things, what the likelihood of a major incident on these pipelines is. With a link to a database of similar incidents. So, the documents state that the likelihood of such an incident for this pipeline is less than one incident in 100 years.
What database are they referring to? Does the world have that many underwater gas pipelines?
There are indeed many, they are all over the North Sea, the Gulf of Mexico. Probabilities are calculated. There are well-established mathematical methods in the science of assessing technological risks.
Another thing that’s important here is that it was very hard for