Do not rely on foil tape as the only thing holding a round reducer in place.
Check
Shut down/secure the separated fitting before repair.
Check collar depth and pipe overlap.
Inspect screw holes for stripping or tear-out.
Refasten per approved pressure class.
Leak-test or startup-check after sealing.
Steps
Shut down/secure the separated fitting before repair.
Check collar depth and pipe overlap.
Inspect screw holes for stripping or tear-out.
Refasten per approved pressure class.
Leak-test or startup-check after sealing.
Say this to your foreman
The round reducer at [location] separated under airflow. I checked overlap and stripped holes. Do you want it re-seated with approved mechanical fastening and pressure-rated seal?