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Related to safing: saving
As applied to weapons and ammunition, the changing from a state of readiness for initiation to a safe condition.
1. A barrier which is placed in an air duct around a component (such as a filter) to ensure that air flows through the component rather than around it.
2. In multi-story construction, a fire-stop in the space between the floor slab and a curtain wall, 1 to help retain the integrity of fire-resistance ratings.
3. The fire safety insulation around floor perimeters between the floor slabs and the spandrel panels, which seals off any such openings in floors and walls. Also called safing off.