You probably should look at specialised solutions out there rather than Odoo and equivalent that provide modules across the spectrum of enterprise operations but are not always as polished as specialised ones.

In the compliance space (including BCP/DRP, ERM, Sustainability, HSE, Environmental, and any possible requirement you could be facing) I can strongly recommend http://enablon.com/

"Our solutions help companies manage environmental and social performance, ensure compliance, minimize risks and improve profitability by leveraging some of the world’s most advanced technologies." Perfect for multiple remote operations, complex governance, multiple siystems / complex architecture, varying business requirements depending on BU/site, etc.

Hope that helps

Eric

P.S.: I do not work for or with them and do not get any commission - just think their product is the most suited for this sort of needs

P.P.S.: give me a shout if you need any help from a business transformation perspective i.e. how to best help with adoption, change management and ensure you get as much out of this system (which is only an enabler, the real questions around governance, reporting, underlying processes etc. need to be sorted out - you can do this in an extremely agile and iterative manner. This is what I specialise in.