Not only should HTM 05-1 Managing healthcare fire safety regarding evacuation but also the new Healthcare Premises Guide, page 75 refers in minor detail to staircase evacuation. It also states that your fire evacuation strategy should not rely on the fire and rescue service rescuing people waiting in a refuge. There is generally a minimim number of two staff containing up to 30 bedded patients. the refuge should be large enough to hold all disabled persons requiring rescue. Taking all into account there are many problems to overcome, size and location and protection of the refuge area, limited number of staff for rescue purposes, adequate training and numbers in evacuation procedures [ do not use use patients], IRMP of your local fire service to be confirmed. The fire service do not regularly practice rescues from hospitals unless invited by the healthcare authority or requested by the fire service. e-mail me if I can help you.