Do you own or use acetylene gas in your business or garage?
If there is a fire on your premises, the danger of acetylene cylinders exploding means a hazard zone of a 200m radius is initially set up every time they are reported to be involved in a fire. This can remain in place for many hours, causing major disruption to roads and public transport and evacuations from homes and businesses. And, of course, danger to the fire crews and people nearby.
So if you have or use compressed gas, you can inform the fire service of its presence by displaying a sign on your garage/workshop. If the fire service are attending a fire on your premises or close by, they can take appropriate action to avoid further danger.