ken abbott has worked for shell and g.e., and in 2008 he was hired by bp to manage thousands of engineeringrawings for the atlantis platform. >> they serve as blueprints and also as a operator manual, if you will, on how to make this thing work, and more importantly, how to shut it down in an emergency. >> but abbott says that he found that 89% of those critical drawings had not been inspected and approved by bp engineers. even worse, he says 95% of the underwater welding plans had never been approved either. are these welding procedures supposed to be approved in the paperwork before the welds are done? >> absolutely. yeah. they're critical. >> critical? >> critical. >> abbott's charges are backed up by bp internal emails. in 2008, bp manager barry duff wrote that the lack of approved drawings could result in... duff called the practice fundamentally wrong. >> i've never seen this kind of attitude where, you know, safety doesn't seem to matter, and when you complain of a problem like barry did and like i did and try to fix it, you're just criticized and pushed aside. >> ken abbott was laid