What A Fab Shop’s Ducts Confess
Open a supply run in a Nisku fabrication building and it tells you exactly what the floor has been doing: a dark, fine film of weld fume and grinding dust that no janitorial contract ever touches.
The overflow problem
Source capture gets most of a shop’s fume and fines — the collectors do the heavy lifting. But “most” leaves a constant escape fraction drifting on shop air, and the building HVAC inhales it every runtime hour. The result is distribution runs lined with conductive, oily-fine material that re-lofts on every cycle and finds every surface the day after cleaning day.
The office block downstream
Nisku offices sit in front of, above or beside their shops, and their airstreams interconnect more often than the drawings admit. When admin complains about the black dust on the sills, the shop’s escape fraction has found the front of house. Both sides cleaned in one mobilization is the fix that holds.
Timing it like the industry times everything
Duct work in an operating fab shop happens when the floor sleeps: weekends, slow weeks, turnaround windows. Nisku invented that calendar — give us the window at the site walk and the crew plan is built backward from your restart time.
The sill test
Dark dust returning to office sills within days means the building airstream is carrying shop overflow — a duct-system problem with a duct-system fix.
