Large Transport
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1
Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach
Procedure
Right after a runway change from RWY XY to RWY XX; Aircraft X checked in with the incorrect ATIS requesting an approach into ZZZ. I issued the correct ATIS; told him which approach to expect; and since he was only requesting one approach issued his abnormal missed instructions. Those instructions were runway heading; maintain 3000. At this time my sector became saturated with inbounds to ZZZ; it was abnormally busy because the airport was ground stopped earlier in the day due to hard IMC conditions. After clearing Aircraft X for the approach; another controller helped by coordinating the missed instructions to the tower. About this time we were notified of a priority handling inbound to ZZZ; requesting to land runway XY; I started breaking air carriers out of my sequence; notifying them of the priority handling and Aircraft X would be the last approach to RWY XX before Aircraft Y. I switched Aircraft X to the tower. I was then informed after getting relieved from the position; we possibly had a loss between Aircraft X going around RWY XX and Aircraft Y landing RWY XY.
Approach Controller reported of a possible loss of separation when an aircraft went around and was in conflict with an inbound opposite direction aircraft.