Firefighting Lifts: Your Emergency Ascent

When a fire alarm blares in a multi-story building, the immediate instinct for many is to head for the stairs. It's a widely known fact that standard passenger lifts are typically not to be used in the event of a fire, often programmed to return to a designated ground floor and shut down, in accordance with British Standard EN81-73: 2020. This critical safety measure prevents occupants from becoming trapped and avoids interfering with emergency operations. However, this common understanding often overlooks a specialised category of vertical transport: the firefighting lift. These aren't your everyday lifts; they are engineered with a singular, paramount purpose – to serve as a lifeline for the Fire & Rescue Service, enabling them to combat fires effectively and facilitate controlled evacuations.

Bridge Lifts, for instance, are experts in supplying and installing a range of emergency lifts, and can even upgrade existing systems to meet stringent firefighting lift standards. The question of whether lifts can assist during a fire is frequently asked, and while the answer for conventional lifts is a resounding no, firefighting lifts represent a sophisticated solution designed to operate precisely when conditions are at their most challenging. They are a testament to advanced safety engineering, providing reliable access for fire crews and equipment in active fire scenarios, a capability crucial for high-rise residential, commercial, healthcare, and public buildings.

Understanding the Firefighting Lift: A Pillar of Modern Fire Safety

A firefighting lift is far more than just a means of transport; it's an integral part of a building's fire safety strategy. Unlike standard lifts, which prioritise the safe exit of occupants by ceasing operation, firefighting lifts are specifically designed to remain operational for as long as practicable during a fire. This allows firefighters and their heavy equipment to reach the affected floors swiftly, saving precious time that can make the difference between containment and catastrophe. The standard governing these specialised lifts is EN 81-72: 2015, a revision published on 30th April 2015, which superseded the 2003 version. This standard outlines the specific requirements to ensure these lifts are robust, reliable, and fit for their life-saving purpose.

The strategic placement and number of firefighting lifts within a building are determined by national regulations and the overall fire design strategy. They are an essential tool, not only for transporting fire crews and their gear but also for facilitating evacuation under the direct control of firefighters. This controlled evacuation capability is particularly vital in large, complex buildings where stairwell evacuation might be slow or difficult for individuals with mobility issues.

Key Design Elements of a Firefighting Lift

For a lift to be classified and operate as a firefighting lift, it must adhere to a strict set of design specifications that go far beyond those of a conventional passenger lift. These requirements ensure the lift's structural integrity, operational reliability, and safety under extreme conditions.

• Minimum Rated Load: The lift must have a minimum rated load of 630 kg. This capacity is vital for carrying firefighters laden with heavy equipment.
• Interior Car Dimensions: The minimum interior dimensions of the lift car must be 1100 mm wide by 1400 mm deep, providing adequate space for personnel and equipment.
• Entrance Width: A minimum clear opening entrance width of 800 mm is required to allow for easy access, especially when carrying bulky equipment.
• Stretcher/Bed Evacuation Capacity: If the lift is also intended for evacuation of individuals requiring stretchers or beds, the minimum rated load increases to 1000 kg, and the interior dimensions must be at least 1100 mm wide by 2100 mm deep. This ensures critical medical transport capability.
• Speed and Efficiency: The lift must be capable of reaching the top floor within a maximum of 60 seconds for travels up to 200 metres. This speed is vital for rapid response in an emergency.
• Water Ingress Protection: All electrical equipment within the lift well must be protected against water ingress to an appropriate IP rating. This prevents short circuits and operational failures from water used in firefighting efforts.
• Emergency Escape Features: A trap door must be provided in the lift car roof, along with additional ladders, to facilitate escape from the lift car by firefighters if they become trapped.
• Advanced Control Systems: Firefighting lifts require additional control system features beyond those found in non-firefighting lifts. This includes manual override controls and two-way communication systems, allowing fire crews to take full command of the lift during an incident.

Building Design Considerations for Firefighting Lifts

The functionality of a firefighting lift is not solely dependent on its internal design; the building's structure and systems must also be specifically adapted to support its operation during a fire. Integrated design is key to ensuring the lift performs as intended.

• Minimising Water Ingress: Measures must be taken to minimise water entering the lift well. This can include drainage channels in front of each landing entrance or ramping up the finished floor level. Where complete prevention isn't feasible, robust measures to prevent water build-up in the pit are necessary, such as drains to prevent water reaching a defined level or permanently installed draining pumps. These pumps must be located outside the lift shaft and have a secondary power supply. Given the high volume and pressure of fire hoses, installing pumps or drainage measures is often advisable even when other ingress prevention methods are in place.
• Fire Resistance of Structure: The fire resistance of doors, walls, and other structural elements around the lift well must be in strict accordance with fire regulations and the building's fire strategy. This includes fire-protected lobbies at every landing door, ensuring a safe staging area for firefighters. The size of these lobbies must accommodate the transportation of stretchers.
• Shared Lift Wells: If a firefighting lift shares a common well with other lifts, the entire common well must fulfil the fire resistance requirements of a firefighting lift well. This also applies to the fire-protected lobby doors and machine room. If there's no intermediate fire wall separating the firefighting lift from others in a common well, then all lifts and their electrical equipment must have the same level of fire protection as the firefighting lift to ensure continued correct functioning.
• Secondary Power Supply: A reliable secondary power supply is absolutely critical for a firefighting lift. This supply, often from a backup generator or an alternative substation, must be located in a fire-protected area to ensure uninterrupted operation even if the main power is compromised. The reliability of both power supplies and their associated circuitry is paramount.

General Operational & Maintenance Considerations

While designed for emergency situations, firefighting lifts can also serve as normal passenger lifts during routine operations. However, to minimise the risk of the lift entrance being obstructed when needed for firefighters' service, its use for moving refuse or goods should be restricted. This ensures immediate availability when an emergency strikes.

The electric power supply cables for a firefighting lift must be fire protected, safeguarding the power flow even as the fire progresses. Post-construction, rigorous maintenance procedures must be put in place to regularly check and ensure that firefighting lifts are correctly maintained and always available for use when required. This ongoing vigilance is just as important as the initial design and installation.

Firefighting Lift vs. Standard Passenger Lift: A Comparison

To highlight the unique capabilities of firefighting lifts, here's a comparison with standard passenger lifts:

Frequently Asked Questions About Firefighting Lifts

Understanding the role and requirements of firefighting lifts can be complex. Here are some answers to common queries that shed more light on these vital safety systems:

Can a normal passenger lift be used during a fire?

No, under almost all circumstances, normal passenger lifts are designed to go to a designated ground floor and shut down in the event of a fire alarm. This is a safety measure to prevent people from becoming trapped and to keep the lift shaft clear for emergency services. Only specially designed firefighting lifts are permitted for use during a fire, and then, only by trained fire personnel.

What is EN 81-72: 2015, and why is it important?

EN 81-72: 2015 is the European Standard that specifies the safety rules for the construction and installation of lifts for the exclusive use of firefighters. It's crucial because it outlines the stringent design, performance, and operational requirements that ensure these lifts can function safely and effectively in the extreme conditions of a building fire, making them a reliable tool for emergency services.

How long should a firefighting lift last during a fire?

A firefighting lift is designed to operate for as long as is practicable when there is a fire in the building. This means it is built with robust components, fire-protected systems, and a secondary power supply to ensure it remains functional throughout the fire incident, allowing firefighters to continue their operations.

Are firefighting lifts only for firefighters, or can they be used for evacuation?

While the primary use of a firefighting lift is for the Fire & Rescue Service to transport firefighters and their equipment, they can also be used for controlled evacuation. This evacuation is always under the direct control and supervision of firefighters, especially for individuals who cannot use stairs, such as those with mobility impairments or injuries.

What happens if water from fire hoses enters the lift shaft?

Firefighting lifts and their surrounding building structures are designed with measures to minimise water ingress into the lift well. However, if water does enter, the electrical equipment within the well is protected to an appropriate IP rating. Furthermore, mechanisms like drainage channels, ramping, and even permanently installed sump pumps (located outside the shaft with a secondary power supply) are put in place to prevent water build-up and ensure the lift's continued operation.

Is a secondary power supply always necessary for a firefighting lift?

Yes, a secondary power supply is absolutely essential for a firefighting lift. This backup supply, often a generator or an alternative feed from a separate substation, ensures that the lift remains operational even if the building's main power supply is compromised by the fire. This redundancy is a critical safety feature.

Understanding the specific role and robust engineering behind firefighting lifts highlights their critical importance in modern building safety. They are not merely an amenity but a sophisticated piece of emergency infrastructure, providing the Fire & Rescue Service with the vertical access they need to protect lives and property when every second counts.

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