Northern Ireland · County Antrim, County Down · fire protection
Belfast stair and corridor smoke control
348,005 people were the published usual residents of Belfast in 2021. The place sits in County Antrim, County Down, Northern Ireland. The source line is Northern Ireland settlement population (published Ireland list, NI jurisdiction). Fire safety law and building regulations in Northern Ireland are not the English Approved Document B set. We quote to the strategy and the rules that apply there, and we say so on the visit record. Classification on that source: Settlement.
Manual control at the landing
Residents and the fire service use the manual point, often at stair level, not the panel in a locked riser. We operate that switch as well as the panel output. A vent that only moves from the engineer’s laptop is not commissioned.
Rain sensors lose to a fire input
Comfort mode may shut a vent when it rains. Smoke mode has to win. On a visit we simulate the fire-alarm contact and watch whether a wet sensor still holds the stair vent closed. If it does, the panel logic or the sensor wiring is wrong, and the roof hatch is not a smoke vent until that is fixed.
Automatic opening vents are life-safety smoke control, so this sits with fire protection and is quoted across the UK. Population figures are the published resident counts named above. They are not a survey of vents in Belfast.
