Fire demper

Thia is a fire damper. In case of a fire we can close them so the air don't go in to the fire. We have four of this type dampers.

My job was to take them apart and make cure that they was working properly. One of them was stuck so I just a day just to get it open. I had to yous a tap and make the treads again. So now its working fine. Now it's up to the deck department to chip the rust and paint them. They "forgot" to paint them in the shipyard wen they was new....