What is a requirement for smoke dampers according to NFPA standards?

What is a requirement for smoke dampers according to NFPA standards?

• A. They must be installed in non-rated walls
• B. They should filter airborne particulates
• C. They must close automatically when smoke is detected
• D. They can be operated manually at all times

Answer: (C)

Smoke dampers play a crucial role in fire protection and life safety within buildings by controlling the movement of smoke through duct systems. According to NFPA standards, specifically NFPA 92 (Standard for Smoke Control Systems) and NFPA 105 (Standard for Smoke Door Assemblies and Opening Protectives), one key requirement is that smoke dampers must close automatically when smoke is detected. The automatic closure is essential for two main reasons. First, it helps to contain smoke within the area of origin, preventing its spread to other parts of the building. This containment is critical for protecting occupants and enhancing the effectiveness of smoke control strategies during emergencies. Second, the automatic operation ensures that the dampers respond promptly without relying on human intervention, which may not always be feasible during a fire condition. Other options, while potentially relevant in different contexts, do not align with the established NFPA requirements for smoke dampers. For instance, the installation of smoke dampers in non-rated walls or their manual operation at all times could compromise the damper's effectiveness in controlling smoke spread. Similarly, while filtering airborne particulates might be a desirable function in some air handling systems, it is not a requirement specified by NFPA for smoke dampers. Therefore, the emphasis on automatic

Smoke dampers play a crucial role in fire protection and life safety within buildings by controlling the movement of smoke through duct systems. According to NFPA standards, specifically NFPA 92 (Standard for Smoke Control Systems) and NFPA 105 (Standard for Smoke Door Assemblies and Opening Protectives), one key requirement is that smoke dampers must close automatically when smoke is detected.

The automatic closure is essential for two main reasons. First, it helps to contain smoke within the area of origin, preventing its spread to other parts of the building. This containment is critical for protecting occupants and enhancing the effectiveness of smoke control strategies during emergencies. Second, the automatic operation ensures that the dampers respond promptly without relying on human intervention, which may not always be feasible during a fire condition.

Other options, while potentially relevant in different contexts, do not align with the established NFPA requirements for smoke dampers. For instance, the installation of smoke dampers in non-rated walls or their manual operation at all times could compromise the damper's effectiveness in controlling smoke spread. Similarly, while filtering airborne particulates might be a desirable function in some air handling systems, it is not a requirement specified by NFPA for smoke dampers. Therefore, the emphasis on automatic