kurnal,
I guess it can be assumed that the beds do not have wheels and cannot be moved. I understand that generally the residents' like the place to look like a home and not a hospital.
I'm not surprised at the views on manual handling you've come across. Not because I, too, am hung up on the regs but because I recognise that a large part of the world has gone health and safety bonkers! See below:
Am I right in supposing the procedure would be, in the worst case, 8 bedded room for example, one staff member dealing with the fire and the other two moving the other residents out of the compartment to safety - probably just out the room in the first instance? These two would lift the mattress down with the resident on it then drag it out?
I can't help you in sourcing what you're looking for but what about having a couple of evac+chairs available instead - they're good for on the flat. I understand that it would take extra time to transfer the resident from bed to chair then, outside the room, from chair to some receiving point, but the travel time might be reduced to compensate, being on wheels.
Hmmm, I don't know though. The more I think about it, the more cumbersome (and expensive) this seems and the more reasonable your method seems. I guess the skid sheet is because you're on a carpet - what about if the skid sheet is long enough you wouldn't need straps. If each bed had something like half a salvage sheet (a clean one, not straight off the pump!) ready for deployment next to it, the staff could lower the mattress onto that with a good bit of extra sheet at the bottom that they could grab hold of and pull. Could even stitch in a rigid pole for a handle at the bottom end. Could even patent it and sell it round the world.
No, maybe not, just imagine all the claims for bad backs coming in.
Sorry I'm not much help - just burbling on tonight. Some one else will have something for you.
Whatever the solution the staff will have to be well versed in it and well practised. You don't want the first time they've got to do it to be when the next bed is on fire.
Stu