A transpacific B777 flight returned to its departure airport when the right engine suffered a catastrophic failure during the climbout.

Narrative

Severe engine damage occurred during climb seven minutes after takeoff. Speed was 320 KTS altitude was approximately 11;000 FT. Engine was at normal climb thrust and a loud bang was heard in the cockpit. The right engine instruments showed the N2 at zero within approximately 3 to 5 seconds after the loud bang was heard. We declared an emergency with ATC; descended to 10;000 FT; asked ATC for a heading of 060 and went through the QRC; secured the engine; advised the cabin what was happening and gave a cabin advisory and dumped to 77;000 LBS of fuel remaining. We landed overweight at 472;000 LBS. We followed all the FOM procedures and notified Dispatch. A normal; soft 20 flap landing was made following a visual ILS approach. Autobrakes level 3 used to stop. Emergency equipment inspected the plane for fire after turning off the runway. All was normal; so we taxied to the gate using our left engine. ATC did a great job. One thing ATC did that was very nice was give us our own discreet radio frequency. ATC also was great about not pestering us too much. The flight attendants also did a terrific job.