Final answer:
A Certificate of Fitness holder should consider extinguishing a fire by assessing the potential danger and the seriousness of the fire situation. The critical temperature of CO₂ and the effectiveness of fluorinated solutions are also taken into account when deciding to extinguish a fire.
Step-by-step explanation:
When considering when to extinguish a fire, a holder of a Certificate of Fitness (C of F) must make a judgment call based on several factors. These include assessing the potential for extreme physical danger and the uncertainty over whether there's a serious fire or hazard following an alarm. Factors such as the proper season for making attacks with fire, the critical temperature of carbon dioxide, and the capabilities of fluorinated solutions to extinguish fires also play a role in understanding and mitigating fire risks. For instance, the effectiveness of a CO₂ fire extinguisher can depend on the ambient temperature since CO₂ can only be liquefied under its critical temperature (31°C), which is essential for the extinguisher to function properly.