Final answer:
A TPP rating is a Thermal Protective Performance given to the durability of equipment when exposed to a flash fire event. Temperature is a key factor in this rating, with the rating being directly proportional to temperature.
Step-by-step explanation:
A TPP rating is a Thermal Protective Performance given to the durability of equipment when exposed to a flash fire event. It measures how well the equipment can protect against thermal hazards. Temperature is a key factor in this rating, with the rating being directly proportional to temperature (P x T).