What should be done if the surrounding air temperature is below 20°C during evacuation?

When surrounding air temperatures drop below 20°C during an evacuation, the appropriate response is to abort the process. This is due to the potential safety hazards associated with operating in low-temperature conditions. Low temperatures can affect the performance and reliability of equipment and systems involved in the evacuation process, leading to increased risks of malfunctions or failures.

For instance, the viscosity of fluids could change, impacting their flow characteristics, which could impair the efficiency of the evacuation. Additionally, low temperatures may cause materials to become brittle or more susceptible to damage, risking further complications or accidents.

While waiting until conditions improve might appear to be a viable option, it is generally safer to initiate an abort to reassess the situation and take appropriate measures rather than risk proceeding under potentially hazardous conditions. Maintaining the safety of personnel and equipment is paramount, making the decision to abort not just prudent but essential in these scenarios.