A B767-300's left bleed air system HPSOV closed the supply off at FL360 in cruise. Later the right bleed air system HPSOV BLEED light began flickering. An emergency was declared and the aircraft descended to land at a nearby airport.

Narrative

One hour into my rest break; crew requested my presence back onto flight deck. Upon entering cockpit I learned that we had lost the entire pneumatic system due to a HPSOV problem and follow-up procedure. Requested from Center a lower cruise altitude of FL320; something lower than FL350 as would otherwise be directed by the MEL for present operating condition. Just after leveling off at FL320 the right engine BLEED light illuminated intermittently; followed by intermittent RT ENG HPSOV message. I directed flight crew standby with QRH procedure; declared an emergency/mayday squawk 7700; condition with Kingston Radar and requested descent ultimately 10;000 FT MSL; anticipating the additional loss of the right/both main pneumatic systems. Started the APU. Diverted to a nearby airport; Airfield Rescue and Fire Fighters on standby for arrival; landing; taxi to gate. Terminated emergency/mayday with Tower. Proceeded to assigned gate. Prior aircraft history of right engine Bleed/HPSOV events. Maintained cabin pressure altitude within normal operating limits for descent; arrival and landing. Aircraft gross weight for landing below maximum landing weight. First Officer's and Flight Attendants handled outlined situation as professionals covering all brief and checklist procedures -- outstanding job. Passengers; although inconvenienced; were all positive and thanked the crew for a calm/safe resolution.