What is the activation temperature of the fixed Halon extinguisher on the CRJ 200 in degrees Fahrenheit?

What is the activation temperature of the fixed Halon extinguisher on the CRJ 200 in degrees Fahrenheit?

• A. 174 °F
• B. 212 °F
• C. 300 °F
• D. 400 °F

Answer: (A)

The key idea is how fixed fire suppression automatically triggers: it uses a heat-sensitive element that melts at a specific temperature to release the extinguishing agent. For the CRJ 200’s fixed Halon system, that activation temperature is 174 °F. When the compartment reaches that heat level, a fusible link or thermal switch opens and Halon is discharged into the fire area, providing rapid suppression even if the crew can’t reach the extinguishers right away. The other temperatures listed aren’t the design trigger points for this system, which is why 174 °F is the correct value.

The key idea is how fixed fire suppression automatically triggers: it uses a heat-sensitive element that melts at a specific temperature to release the extinguishing agent. For the CRJ 200’s fixed Halon system, that activation temperature is 174 °F. When the compartment reaches that heat level, a fusible link or thermal switch opens and Halon is discharged into the fire area, providing rapid suppression even if the crew can’t reach the extinguishers right away. The other temperatures listed aren’t the design trigger points for this system, which is why 174 °F is the correct value.