CVG CTLR EXPLAINS NEAR OPERROR AT 10000 FT WHEN ADJACENT CTLR'S OPS PLAN DIFFERED AND ALL ACFT WERE NOT ON THE RPTR'S FREQ.

Narrative

ACR X WAS BEING VECTORED TO A L DOWNWIND TO RWY 36C FROM THE NE. ACR Y WAS ON THE ARR TO RWY 36C FROM THE NW. ACR X WAS WELL AHEAD OF ACR Y IN THE SEQUENCE; BUT SLOWED ON THEIR OWN AND DID NOT ADVISE. WHEN I SAW THIS; I GAVE ACR X A CLRNC FROM 110 DEGS TO 90 DEGS. ACR Z WAS 8 MI BEHIND ACR X FROM THE NE BEING MOVED FROM RWY 36R FROM RWY 36L. I WAS MAKING ACR Z NEXT BEHIND ACR X IN MY PLAN; HOWEVER; THE OTHER ARR CTLR DID NOT PUT THIS ACFT ON MY FREQ. I TURNED ACR Y 15 DEGS L TO MAKE ROOM FOR ACR Z. WHEN ACR Z DID NOT COME TO MY FREQ; I TURNED ACR Y BACK TO CVG AND DSNDED THE ACFT FROM 11000 FT TO 7000 FT. I WAS REACHING OUT FOR ACR Z (WHO WAS BEING VECTORED TO RWY 36L FOR PARKING CONVENIENCE). ACR W WAS CHKING IN ON THE FREQ AND ANSWERED AND TOOK CTLR INSTRUCTIONS FOR ACR Z. I TURNED ACR X L TO 180 DEGS AND DSNDED HIM TO 7000 FT. I TURNED ACR Y TO 090 DEGS AND IMMEDIATELY CALLED ACR Z TO TURN R HDG 330 DEGS. ACR Z PAUSED AND SAID 'WAS THAT FOR ACR Z?' (ALMOST CREATING ANOTHER SIT.) AT THE TIME THE INSTRUCTIONS TO ACR X WERE ISSUED; ACR X AND ACR Y WERE 6.5 MI APART. ACR X WAS TURNING SLOWLY. ACR X AND ACR Y WERE 2.75 MI LATERAL AND WAS INVESTIGATED AS A POSSIBLE OPERROR. IT WAS DETERMINED THAT DIVERGING COURSE SEPARATION EXISTED. IN THE MIDDLE OF THE EVENT; I HAD TO GO BACK AND FIX ACR Z WHO SLOWED TO 180 KTS; 40 MI FROM THE ARPT WITH ANOTHER ACFT BEHIND HIM 10 MI ON THE ARR DOING 310 KTS.