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The picture shows some Aspirating Smoke Detection Pipe located above an air handling unit. It is not unusual for unsupervised and inexperienced painters to paint over the pipe, blocking the microscopically small aspirating holes. These holes are used to suck samples of room air into a detection unit that can act as an early smoke detection system.

If the holes are pained over it won’t work!

Two of our regular readers, Mike Crovo from Airsense and Scot Wilson from Xtralis have both made some great comments and I want to pick up on this theme in a later article.