Some of the absolute worst refinery acidents have happed directly after power outages up here in Washington State.
Refineries accross the country are real touchy about the level of electric utility reliability they are given as it is a real safety issue.
Refineries are also terrorist identified potential targets. After Sept 11th all the ones up here in Washington STate had guards at the front gate and concrete Jersey barriers installed to prevent vehicles from running the gate at speed.
Based on what I know about the massive Stage 2 Power Emergency today and the requirement in Stage 2 to curtail certain industrial loads, I would suspect that this could be an industrial accident related to the loss of power. However, I am speculating at the moment.
-PJ