WDB HAS ENG FIRE WARNING ACTIVATE ON CLBOUT. ENG SHUTDOWN; RETURN LAND.

Narrative

I WAS CAPT ON AIRLINE FLT FROM HONOLULU TO NAGOYA; JAPAN. WE DEPARTED THE BLOCKS AT XA07 HST WITH 141 PAX AND 11 CREW MEMBERS ON BOARD. DURING FLT PREPARATION; I NOTED THAT #2 ENG BLEED (PNEUMATIC SUPPLY) WAS DISABLED DUE TO LOW PRESSURE AND TEMP OUTPUT. ASIDE FROM THAT; ALL WAS NORMAL ON DEP; SAVE A MILD OVERTEMP (EGT) OF #2 ENG ON TKOF. PASSING ABOUT 15000 FT ON CLB; WE NOTED #2 'A' FIRE WARNING SYS FLICKERING. SWITCHING; WE FOUND 'B' SYS INOP; AND WE WERE FORCED TO PERFORM THE ENG FIRE PROC. WITH #2 ENG SHUT DOWN; WE DECLARED AN EMER; DUMPED FUEL AND OBTAINED ZHN (126.5) CLRNC TO RETURN TO HNL. ON THE APCH; WE DISCOVERED THAT OUR ILS WAS INOP; AND WE WERE VECTORED TO A VISUAL TO RWY 8L AT HNL; WHICH WE COULD EASILY SEE FROM 20 MI W. THUS; WE WERE VISUALLY LINED UP ON THE RWY 8L AND DSNDING AT 300 FT/MI AT ABOUT 180 KIAS ON OUR 2 ENG APCH. APCHING BARBER'S POINT APCH CTL CALLED TFC AT 11 - 12 O'CLOCK. AT ABOUT THE SAME TIME; OUR TCASII SHOWED TFC AT ABOUT THE SAME POS; 700 FT BELOW US; AND 4 MI AHEAD. THE TFC BEING DIFFICULT TO SPOT; AND DANGEROUSLY CLOSE TO OUR POS AND ALT; I LEVELED THE ACFT AT 3600 FT TO 3700 FT AND TURNED OFF COURSE S (AS APCH CTL ALSO GAVE US THAT SAME TURN). WE FINALLY SPOTTED THE TFC AT OUR 10 O'CLOCK; 1/2 - 1 MI; 200 FT BELOW US. (IT WAS A SINGLE ENG HI-WING; WHITE ACFT.) TO ME; THE ACFT APPEARED TO BE IN THE ILS APCH CORRIDOR; AND OUT OF CONTACT WITH ANY CTLING AGENCY. AFTER PASSING THE TFC; WE RECOVERED FROM OUR EVASIVE MANEUVER AND LANDED NORMALLY. I SUSPECT THAT THE CONFLICT WAS A VFR. 'KAHC POINT' DEP (TO KAUAI?) OR POSSIBLY JUST A SIGHT-SEEING TRIP. POSSIBLY; VFR PROCS AT HNL NEED EXAMINATION; OR A REDEFINITION OF THE CLASS 'B' BOUNDARY. COULD THIS COUNT AS A 6 MONTH CHK RIDE?