Wolfram,
OK I won't refer you to a magazine.
Risk Analyses depend a lot on historical data over a defined time window, and this is your best source of information. In rare cases you may project risks based on a scenario that doesn't yet exist. This will require frequent re-evaluation of the...
To the best of my knowledge, Human Error / negligence is never quantified as a risk factor because of the underlying assumption that this is an intolerable situation. However intentional sabotage can be quantified and mitigated.
Are you referring to top business unit organization i.e. how the deepwater unit integrates into the overall company structure or deepwater organization as a local business unit?