Whole report not about were the pipes exploded.
the other report a pre construction study.
Here is a survey pic of NSP1 from 2014:

Spot the massive shielding layer of concrete, as "the guys" told?
Now please share some real source for the pipes being not laid as stated and documented in multiple sources, laying there in the bottom just like that?
This is very important detail, as if the pipeline was indeed under concrete armor as "the guys" are telling, it changes everything.