Fire damper (fire/smoke/radiation damper) are used to prevent the spread of fire and smoke through the ducts and channels. When temperature or smoke rises, damper blades (vanes) will be closed and shut the duct entry (cross sectional area).
Fire dampers are activated in two ways:
- Melting a thermal element: when temperature of the area exceeds a certain value.
- Receipt of electrical signal from fire alarm system
Related standards:
- NFPA 80
- NFPA 105
- ISO 10294-5
- ASTM E2912
- ASTM E119
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