Final answer:
Emergency shutoff mechanisms for oil burners must be clearly labeled to ensure safety in an emergency, and proper instruction on the handling of flammable chemicals is essential.
Step-by-step explanation:
All controls designed to stop the flow of oil to the burner during an emergency situation must be permanently labeled as emergency shutoff or safety shutoff devices. This labeling is crucial because it ensures that, in case of an emergency, individuals can quickly identify and access the shutoff mechanism to prevent accidents or damage. Workers and students handling such equipment should follow instructions carefully regarding the handling of flammable chemicals and should be trained on the importance of not exposing any chemicals to a flame or other heat source unless explicitly instructed to do so by an authority, such as a teacher in the case of a student in a laboratory setting.