What is the range of safe oxygen readings for most petroleum products?

The range of safe oxygen readings for most petroleum products is critical for ensuring safety during handling and storage. Typically, petroleum products are flammable and can pose explosive hazards if they are present in an environment with too much oxygen. The correct answer indicates that the safe range of oxygen readings is typically between 1 to 10%. This range allows for sufficient oxygen to support combustion without reaching levels that would significantly increase the risk of fire or explosion.

Higher oxygen levels can lead to a heightened risk of combustion, while levels below 1% may not provide enough oxygen for safe operation in a controlled setting. Therefore, maintaining oxygen readings in the specified range is essential for the safety of operations involving petroleum products and helps to prevent potentially hazardous situations.

The other options reflect oxygen levels that might either be too low for safe combustion processes or too high, creating safety risks in environments where petroleum products are present.