Here is update on Shell Anacortes Coker Power blip news release. Shell just returned from Coker & Refinery maint & repair in Nov 2011 (See post 11/13/2011 – also history on coker & anode coke product).
The Shell/Equilon Anacortes/Puget Sound Refinery coker also had power blip 1Q2011 – see post 1/22/2011.
I havent seen any repair or coker revamp news to see if size drums or operational configuration was changed to allow more/heavier slates crude. Since the Anode coke is on razor edge between fuel & anode it could easily become fuel with any coker cycle time or heavier crude slate changes.