Increasing sound levels in a ringing room Sadly, JH has a good point.
The method for providing fire protection of penetrations through floors and walls is well established and is of two forms - firstly fully sealing around, say, a pipe, with fully non-combustible material, and secondly, using intumescent materials with or without collapsing containment.
When you need the hole in the ceiling (e.g. for a bell rope), a double-walled tubular sheath containing intumescents can be used. The intumescent is between the concentric tubes forming the cylinder and the inner wall collapses / deforms with the passage of hot products of combustion, thereby closing the opening and stopping the propagation of the fire to the upper compartment / room / chamber.
Sadly, my home tower does not practice what I preach!. I also recommended intumescent strips around all the trap doors etc and the use of intumescent sealant to fill the many gaps between the floorboards in the intermediate and bell chambers. These were not progressed for unknown reasons.
The lovely Victorian Gothic doors have large gaps around the leaves and there more intumescent strips were recommended but not pursued.
The Risk Assessment for a church MUST ALSO include the tower and the specialist equipment therein (the bells etc), but how many Steeple Keepers ensure that it is?
With the vast majority of towers only having a single means of access / escape, and with the individual compartments / chambers / rooms usually having no more than lancet "windows", the most serious risk to bell ringers is fire near or in the tower below them. I've never met another bell-ringer who has considered this.