They said the refinery lost power, so this is some sort of hiccup. We saw it Sat. on way back into town. Photographer lives nearby, said he never saw the smoke so black nor the flames so high. How he measured that is hard to tell. But was it a coincidence it happened on Christmas Eve day, Saturday, when there'd be no one from government to fine them? Of course, Petrobrás is a government-owned entity ...
And two days ago I'd resolved not to request any features or make suggestions. Well, it was just a wish, not a request, right?
It's highly likely there are safety releases of the content of the miles of pipes involved to reduce the possibility of explosion both during a power outage and also when power resumes. These would be relatively immune from regulation as they fall in the category of emergency safety measures.