“Do you know how many meters the ‘Line 1’ of NS1 typically is from NS1’s ‘line 2’ ...”
Don’t know exactly. I heard 90 meters.
Does not make a lot of difference. Anything down to about 1000’ is within range of capability today for human intervention.
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Thanks. I was looking for that metric to do an assessment of explosive destruction requirements. 90 meters is a relatively large distance and in water would certainly require two separate charges to take out the two lines. I don’t have the knowledge to do an acceptable estimate of how much HE would be required and its placement but I’m pretty sure two separate dedicated devices (and probably with shaped charges) would need to be in physical contact with the two NS2 lines. And that would be what would be needed to breach into a segment of the pipeline. I don’t know if the blast force required to physically move a portion of the pipeline to cause segment separation would be a smaller or bigger requirement.
There were four [ 4 ] separate explosions, according to the Swedish seismologists.
This would be SOP redundancy, 2 per pipeline.
“Two is one and one is none.”