England · Yorkshire and The Humber · fire protection
AOV repairs and tests in Thirsk
10,946 people were the published usual residents of Thirsk in 2019. The place sits in Yorkshire and The Humber, England. The source line is ONS towns 2019. Workplace profile in the ONS towns file: Residential. Deprivation band on the same file: Middle Deprivation. Coastal classification: Smaller non-coastal towns. ONS records population change of 20% between 2001 and 2019 for this built-up area. Classification on that source: Small.
Batteries, not a green LED
AOV panels are supposed to open the vents after the mains has failed. We check battery date, charge voltage and whether the connected actuators still move on batteries. A silent fault LED after a reset is not evidence the standby supply can throw a roof vent.
Shafts are a sequence
A smoke shaft works only if the inlets and the outlet open in the combination the design states. Opening the head vent while every lobby damper stays shut is not a pass. We do not enter a shaft that has no safe access, and we write “not accessed” rather than “satisfactory”.
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 Thirsk.
