England · South East · fire protection
Horndean stair and corridor smoke control
49,381 people were the published usual residents of Horndean in 2019. The place sits in South East, England. The source line is ONS towns 2019. Workplace profile in the ONS towns file: Residential. Deprivation band on the same file: Low Deprivation. Coastal classification: Larger non-coastal towns. ONS records population change of 8% between 2001 and 2019 for this built-up area. Classification on that source: Medium.
Air handling is the other half of this service
Some plant rooms contain an AOV panel and an air-handling unit. The AHU’s fire interlock should stop comfort fans fighting a smoke path. We record the two systems on separate lines so a passed stair vent cannot hide a fan that only runs in hand.
Roof hatches fail in the weather
Head-of-stair lids take wind, water and bird mess. A perished cable gland full of water presents as a dead actuator. We look at hinges, the closer and the cable crossing the roof before we condemn the motor. A lid left open after a test is a leak on the top landing as well as a controls fault.
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 Horndean.
