A Comprehensive Guide on Smoke Control Systems

Fire, one of the most dangerous hazards to exist, has serious repercussions. Most fatalities, shortness of breath, and other accidents are caused by the smoke the fire releases. Making the byproduct even more challenging to confront. 

One fire safety tool used to limit and lessen smoke flow during a fire is a smoke control system. By making evacuation easier and supporting firefighting efforts, it improves safety. 

Smoke Control System: Definition 

There are two types of smoke control systems. One uses fans or natural vents to extract smoke. The other uses barriers such as smoke doors and pressure differences to prevent smoke spreading in buildings and structures.  

These systems are crucial in big buildings where smoke can be a major hazard. To protect residents and emergency personnel, smoke control systems are designed, planned, and installed adhering to building codes. 

Types of Smoke Control Systems

There are two categories of smoke control systems. Namely,

1. Elevator Smoke Control System 

2. Stairwell Pressurization System

1. Elevator Smoke Control

Elevator smoke control works by using unique devices that keep smoke from getting into elevator shafts during a fire. When a fire alarm is triggered, these systems activate to close elevator doors and redirect the elevator to a designated floor, typically the ground level, to ensure safe evacuation.  

Smoke detectors within the shaft detect smoke presence, and if prompted, they initiate fan systems. This exhausts smoke from the shaft or maintains positive pressure to prevent smoke infiltration.  

Improving occupant safety by creating clear evacuation routes. Guiding firefighters in managing the fire more efficiently.

2. Stairwell Pressurization System

In high-rise buildings, a stairwell pressurization system is a crucial component of smoke control plans intended to improve occupant safety in the event of a fire.  

By preserving positive pressure inside the stairwells, this device successfully stops smoke from entering these vital escape routes. Using specialized fans to bring in fresh air creates a pressure difference between the stairway and the surroundings. 

The pressurization system is essential in maintaining the accessibility and clarity of stairwells for evacuation. When it is activated, either automatically by fire detection systems or manually. To ensure the efficacy of this system, regular testing and maintenance are essential. 

Other types include: 

• Zoned Smoke Control System 

• Mechanical Smoke Exhaust 

• Atrium Smoke Control 

• …and more. 

Basic Components in Smoke Control Systems  

While there can be differences in different models of smoke control systems, certain important components include: 

Pressurization System  

A pressurization system in smoke control systems creates a gap in pressure that prohibits smoke from invading stairwells and exit routes. So, these can be used as evacuation routes in times of fire hazards.  

Such is performed by bringing clean air into these regions when maintaining a relatively higher pressure than adjacent areas. The system usually uses fans to distribute fresh air, which drives smoke away and ensures safe escape pathways during a fire.  

By maintaining this pressure differential, the pressurization system protects occupants, promotes escape, and aids firefighting efforts. Keeping critical areas devoid of smoke infiltration. 

Smoke Barrier 

Because they successfully trap smoke during a fire and stop it from spreading throughout the building – smoke barriers are essential parts of smoke control systems. They guarantee secure escape pathways. Shield residents from inhalation risks by limiting the flow of smoke.  

To prevent deterioration of air quality on the premises, smoke barriers are necessary. Thus, ensuring an effective smoke control system at work on your premises.  

Fans and Ventilation Systems in Smoke Control Systems

Fans and ventilation systems are crucial elements of smoke control systems. Performing a critical role in the proper management of smoke during fire occurrences.  

These devices actively engage in the extraction of smoke from occupied areas and designated escape routes, guaranteeing that people have a clear and safe pathway for evacuation. 

These components make up the smoke control system. It is designed to mitigate fire and smoke emergencies. So, these are the basic elements present in a smoke control system.

Read More:
Different Types of Fire Alarm Systems and Their Detectors

To Conclude 

In our previous blogs, we spoke a great deal about fire alarms and fire alarm systems. How they work, their components, symptoms of performance failure, maintenance tips, and other facets. However, many of us ignore the significance of smoke control systems. More than the fire, it’s the smoke that causes death by respiratory failure.  

Let alone neglect, we took it upon us to impart the ABCs of smoke control systems and how they work. Read the above blog to gain useful insights on smoke control systems.