When the BEAR Power Unit fuel looks cloudy during cold temperature operations, the fuel has reached what point?

When the BEAR Power Unit fuel looks cloudy during cold temperature operations, the fuel has reached what point?

• A. Pour Point
• B. Cloud Point
• C. Flash Point
• D. Autoignition Point

Answer: (B)

Cloud point is the temperature at which paraffin wax crystals begin to form in the fuel, making it appear cloudy. When the BEAR Power Unit fuel looks hazy in cold conditions, you’ve reached the cloud point. This visual change comes from crystallization of wax, not from ignition properties or the ability to flow at all times. The others relate to ignition (flash point, autoignition point) or to how easily the fuel pours (pour point), not the cloudy appearance caused by wax crystals. In practice, cloud point is the temperature at which you first see cloudiness, which is higher than the pour point.

Cloud point is the temperature at which paraffin wax crystals begin to form in the fuel, making it appear cloudy. When the BEAR Power Unit fuel looks hazy in cold conditions, you’ve reached the cloud point. This visual change comes from crystallization of wax, not from ignition properties or the ability to flow at all times. The others relate to ignition (flash point, autoignition point) or to how easily the fuel pours (pour point), not the cloudy appearance caused by wax crystals. In practice, cloud point is the temperature at which you first see cloudiness, which is higher than the pour point.