...but that would require flow, right? (that is, closing of the flow too fast will basically lead to a shockwave rupturing the pipe). In this case, the pipes w

...but that would require flow, right? (that is, closing of the flow too fast will basically lead to a shockwave rupturing the pipe). In this case, the pipes were basically being used as pressure vessels (I believe it was quoted in the media that pressure in one of the pipes was 105bar/1,500psi or so before the leak sprung). With nothing but static pressure, I have a hard time seeing how such a pipeline may be sabotaged in SW alone - doubly so as it, as far as I can tell from media reports, really is the proverbial dumb pipe - valves and thingamajigs at either end, but the pipeline itself is essentially just a pipe with no shutoff valves throughout. (Which, in itself I find hard to believe, so I probably had better dig a little bit more!)