Canadian Entry To Practice (CETP) Practice Test

Propane containers are designed and tested at how many times their normal operating pressure?

1. 2

2. 3

3. 4

4. 5

The correct answer is: 4

Propane containers are typically designed and tested to withstand pressure significantly above their normal operating pressure to ensure safety and integrity during use. The standard practice is to test these containers at four times their normal operating pressure. This testing process helps to identify potential weaknesses in the container's materials and design, ensuring that it can handle various stress conditions. Utilizing a testing standard of four times the normal operating pressure adds an important safety margin, ensuring that under extreme conditions—such as temperature fluctuations or accidental overfilling—the containers won't fail. This level of safety is crucial, given the flammable nature of propane and the potential hazards associated with pressure vessel failures. Other possible choices reflect lower safety margins, which may not provide sufficient assurance against potential risks, compromising safety standards crucial in handling volatile substances like propane.