Loose or proud liner pins can catch dirt and let liner lift in the airstream. Flatten/secure them and repair liner facing per approved liner adhesive/spec before inspection closeout.
Do not leave sharp or proud liner pins sticking into the airstream because “nobody will see it.”
Check
Inspect liner pins with light/mirror before closing the run.
Check for proud pins, loose liner, torn facing, or exposed fibers.
Secure or flatten pins using approved method/tools.
Brush/coat damaged spots with approved liner adhesive/sealer.
Remove debris before final closeout.
Steps
Inspect liner pins with light/mirror before closing the run.
Check for proud pins, loose liner, torn facing, or exposed fibers.
Secure or flatten pins using approved method/tools.
Brush/coat damaged spots with approved liner adhesive/sealer.
Remove debris before final closeout.
Say this to your foreman
The lined duct at [location] has pin heads/liner fasteners sticking into the airstream. I checked for loose liner. Do you want them flattened and sealed with approved liner adhesive before inspection?