One-Stage and Two-Stage Fire Alarm Strategy in Nursing Homes

Fire alarm strategy in a nursing home is not a choice between a loud alarm and a quiet alarm. It is a decision about how warning, staff response, investigation, compartment evacuation and escalation will work in the first minutes of a fire.

That decision has to match the building and the residents. A small community dwelling where people can leave quickly may need a different arrangement from a larger nursing home using progressive horizontal evacuation. A centre with high-dependency residents, night staffing pressures, oxygen use, bedroom fire doors and multiple compartments needs an alarm strategy that supports staff action without delaying warning or evacuation.

The practical test is simple: when the system activates, do staff know where the alarm is, what signal they are hearing, who is in charge, who investigates, who starts evacuation, when the fire service is called and how the system escalates if the risk is confirmed or not resolved quickly?

One-Stage Fire Alarm Strategy

A one-stage fire alarm strategy gives a general fire warning immediately when the system activates. In a simple workplace, that may mean everyone leaves the building at once. The signal is direct and easy to understand: the alarm sounds, people evacuate.

This can be appropriate where occupants are awake, mobile, familiar with the building and able to self-evacuate. It can also be suitable in some smaller care settings where the evacuation strategy is an immediate total evacuation and staff can manage it safely.

In many nursing homes, however, a full general alarm can create problems. Residents may be asleep, confused, frail, distressed by noise, unable to understand the signal or unable to move without staff. A building-wide alarm may cause residents to leave safe rooms, move towards smoke, gather in corridors or become more difficult to assist. It may also distract staff from the immediate priority, which is usually the affected room or compartment.

Two-Stage or Staff-Alert Strategy

A two-stage or staff-alert strategy uses a first signal to alert trained staff and a second signal to warn or evacuate a wider area. In a nursing home, this is often used to support progressive horizontal evacuation. Staff identify the location, check the alarm panel or repeater panel, confirm what has happened and begin the correct procedure.

This approach should not be described as a delay. It is only defensible if the first stage produces immediate staff action. A staff alert that leads to people standing at the panel discussing whether the alarm is probably false is not a life-safety strategy. It is lost time.

The second stage may be automatic after a short programmed period, activated manually by staff, triggered by further detection, or arranged through a cause-and-effect programme agreed by competent persons. The exact arrangement should be documented in the fire strategy and the fire alarm cause-and-effect information.

What IS 3218:2024 Means in Practice

I.S. 3218:2024 is the Irish standard for fire detection and fire alarm systems. It does not say that every nursing home must use one identical alarm strategy. It says the fire detection and alarm system must be planned, designed, configured, commissioned, serviced and maintained by competent persons, and that the alarm method must conform to the building fire safety strategy.

The standard is important for nursing homes because it recognises that accurate information about the fire location can be critical in healthcare premises, residential care homes and hospitals. In those circumstances an addressable system is required. That is not a minor technical detail. Staff need to know which detector or call point has activated so that they can prioritise the affected compartment quickly.

I.S. 3218:2024 also links zoning to the fire strategy. Detection zones should help staff locate the fire without confusion, and alarm zones should reflect the need to give different signals in different parts of the building. Where phased evacuation is part of the strategy, the system may need a two-stage arrangement and enhanced fire-resisting cabling in relevant parts of the installation.

The cause-and-effect programme is central. It should show what happens when a bedroom detector activates, when a corridor detector activates, when a manual call point is operated, when a second device activates, when staff operate controls, and when signals are transmitted to an alarm receiving centre or the fire service.

Category L1 and Detection Coverage

For designated centres, HIQA guidance states that fire detection and alarm systems should generally be installed to Category L1 standard, with a lower domestic-style standard only accepted in certain community dwelling arrangements. TGD B 2024 also indicates L1 coverage for residential care facilities. In practical terms, this means detection throughout the building, not only in corridors.

This matters because a staff-alert strategy depends on early and accurate information. If detection is missing from a bedroom, store, plant space, roof void or another risk area, staff may not receive the warning early enough. If detection is present but poorly zoned, staff may waste critical time searching the wrong compartment.

A nursing home alarm review should therefore look at coverage as well as sounders. Are all rooms and relevant voids protected? Are detector types suitable for the environment? Are unwanted alarms being caused by poor detector selection? Can staff identify the alarm location quickly from the panel text, zone map or repeater?

HIQA's Practical Expectations

HIQA's Fire Safety Handbook expects providers to have an effective fire detection and alarm system, to maintain it, and to make sure staff can use it. It states that the system should help staff identify the source of an alarm quickly and prioritise the compartment that may need to be evacuated.

HIQA also expects staff to be trained so that they can read and understand the fire alarm panel, identify where an activation has occurred, search a building zone where appropriate, raise the alarm, alert other people, call the fire service and implement the emergency procedure.

This is where two-stage systems can fail in practice. The technology may be correct, but staff may not know what the signals mean. If staff cannot tell the difference between an alert signal, an evacuation signal, a fault, a disablement or a test, the strategy is not working.

Progressive Horizontal Evacuation

Most larger nursing homes rely on progressive horizontal evacuation. The first movement is usually from the affected room or compartment into an adjoining fire-resisting compartment on the same floor. This is more realistic than attempting an immediate full evacuation of frail residents to outside the building.

A staff-alert or two-stage alarm can support that approach by directing trained staff to the area that matters first. The alarm strategy should help staff move the residents at immediate risk while keeping residents in unaffected compartments safe and supervised.

The system must still warn people effectively. HIQA is clear that everyone in the centre must be warned in the event of fire, with account taken of heavy sleepers, medication, hearing impairment, communication needs and residents affected by loud noise. The form and timing of warning should be part of the fire strategy, not an accidental by-product of the alarm panel programming.

The Risk of Treating Stage One as False Alarm Time

Two-stage systems are sometimes justified as a way to reduce disruption from unwanted alarms. Reducing unwanted alarms is a valid aim, but it must not outrank life safety. I.S. 3218 includes false alarm management, detector selection, logbooks, maintenance and investigation processes. These are safer ways to manage nuisance alarms than building in casual delay.

A manual call point should be treated with particular care. If someone has operated a call point, the system should recognise that a person believes there is a fire or emergency. It should not be hidden behind the same low-level response as a single detector that may have been affected by steam, dust or cooking activity, unless the fire strategy has been specifically designed and justified by competent persons.

The first-stage period, if used, should be short, supervised and automatically escalated if staff do not respond as expected. It should never depend on a single staff member remembering to press the right button while also assessing smoke, residents, doors and evacuation needs.

Calling the Fire Service

The alarm strategy must also deal with how the fire service is alerted. Some systems transmit signals automatically to an alarm receiving centre. Others rely on staff calling emergency services. Either approach must be written into the procedure and tested in training.

A staff-alert arrangement should not create uncertainty about calling 999 or 112. If staff discover fire, smoke, burning smell, heat, or any sign that the activation may be genuine, emergency services should be called without waiting for the end of an investigation period. If the centre uses automatic alarm transmission, staff still need to know what information they must provide when emergency services arrive or make contact.

False alarms should be managed, but a nursing home should not build its emergency response around avoiding calls. The cost and inconvenience of unwanted attendance cannot be allowed to outweigh the risk to residents.

Night-Time Operation

Night-time operation is the hard test. The centre may have fewer staff, residents may be asleep, dependency may be higher, and staff may have to travel further to the panel or repeater. If the alarm strategy only works with daytime staffing, it does not work.

The fire strategy should identify who attends the panel, who checks the area, who starts resident protection, who calls the fire service and who supervises unaffected residents. In a small night team, one person may have more than one role, but the procedure must still be realistic.

Agency staff need a briefing at handover. They should know the alarm sounds, panel location, repeater panel location, compartment lines, residents with high evacuation needs, and who is in charge if the alarm activates. A two-stage strategy is unsafe if the only people who understand it are permanent staff who are not on duty.

Testing and Maintenance

The alarm strategy is only as reliable as the system behind it. HIQA expects providers to maintain fire detection and alarm systems and keep clear records. I.S. 3218:2024 also places emphasis on commissioning, acceptance, maintenance, logbooks, configuration records and the responsibilities of the person having control.

Testing should not be limited to pressing a call point once a week. The provider needs evidence that cause and effect still works as designed. If a repeater panel is added, a bedroom layout changes, a compartment is altered, a door release is connected, or an alarm receiving centre link is modified, the alarm strategy may need review.

Unwanted alarms should be recorded and investigated. If steam, dust, contractors, cooking or poor maintenance repeatedly causes activation, the answer is not simply to make the alarm harder to trigger. The answer is competent review of detector selection, location, maintenance, staff procedure and environmental conditions.

Sound Levels and Resident Needs

Fire alarm sound levels must comply with the relevant standard, but the resident impact must also be considered. I.S. 3218:2024 sets sound level requirements, including requirements for residential institutional settings such as nursing homes. HIQA also expects providers to consider residents who are heavy sleepers, sedated, hearing impaired or distressed by loud noise.

This is not a reason to make the alarm ineffective. It is a reason to design the warning properly. Some residents may need staff assistance, visual or tactile warning, personal evacuation information or a planned communication approach. The alarm system and the staff procedure have to work together.

Questions to Ask When Reviewing the Strategy

Start with the fire strategy. Is the centre using total evacuation, progressive horizontal evacuation or a combination? Do the alarm zones match the compartments? Do detection zones help staff identify the room or area quickly? Is the panel or repeater accessible to staff on every shift?

Then look at cause and effect. What happens on activation of a detector in a bedroom? What happens in a corridor? What happens if a manual call point is operated? What happens if a second detector operates? What happens if staff do nothing within the investigation period? Does the alarm receiving centre receive the correct signal?

Finally, test staff understanding. Can staff explain the signals without prompting? Can night staff read the panel and find the zone? Can they move from panel to compartment quickly? Do drills test the alarm sequence, or do they start after someone announces the scenario?

What Should Be Written Down

A nursing home should be able to produce clear evidence of its alarm strategy. That evidence should include the fire strategy, fire risk assessment, zone plans, cause-and-effect documentation, alarm receiving centre arrangements, maintenance certificates, false alarm log, weekly test records, staff training records and drill debriefs.

The written procedure should explain the signals in plain English. It should say what staff do on first alert, who goes to the panel, who checks the indicated area, who calls the fire service, who starts evacuation, when the system escalates, and what happens if the person in charge is not immediately available.

This information should be kept current. A new wing, change in compartmentation, upgrade to the fire alarm panel, change in night staffing or change in resident dependency can all make an old alarm strategy unreliable.

Common Mistakes

The first mistake is assuming two-stage is automatically safer in a nursing home. It may be safer if it supports trained staff action and phased evacuation. It may be more dangerous if it creates delay or confusion.

The second mistake is assuming one-stage is automatically wrong. In a small building with low dependency and a total evacuation strategy, one-stage may be appropriate. The decision depends on the centre.

The third mistake is leaving the alarm company to decide the evacuation strategy. The installer can programme the system, but the strategy must come from the fire safety design, fire risk assessment, resident dependency profile, staffing and competent professional advice.

The fourth mistake is failing to test escalation. A drill should not only ask whether the alarm sounded. It should test whether the correct people heard the correct signal, whether staff reacted in time, and whether the system escalated as intended.

How Phoenix STS Can Help

Phoenix STS provides healthcare fire safety training, fire drill review, fire risk assessment and fire safety consultancy for nursing homes and designated centres across Ireland. We help providers check whether their alarm strategy, staff response and evacuation procedure work together in practice.

For related guidance, see our articles on I.S. 3218:2024, HIQA Regulation 28 fire safety compliance and evacuation times in healthcare facilities.

Frequently Asked Questions

Is a two-stage alarm required in every nursing home?

No. It may be appropriate where the fire strategy uses progressive or phased evacuation, but it must be justified by the fire strategy, resident needs, staffing and competent design.

Is a one-stage alarm unsafe in a care setting?

Not automatically. It can be suitable in some smaller or lower-dependency settings where total evacuation is realistic. In many larger nursing homes, a staged staff response may be more appropriate.

Can a staff alarm be used to reduce false alarms?

False alarm reduction is important, but a staff alarm should not be used as casual delay. Detector choice, maintenance, false alarm records, staff procedure and competent review are the proper controls.

Contact Phoenix STS

To discuss fire alarm strategy, nursing home fire drills or healthcare fire safety training, contact Phoenix STS on 043 334 9611 or use the Phoenix STS contact page.

This article is general guidance only. Fire alarm strategy should be assessed by competent persons against I.S. 3218:2024, the building fire strategy, resident dependency, staffing levels, HIQA expectations and local fire authority requirements.