Associate Safety Professional Practice Exam

Why should acetylene cylinders be stored in an upright position?

1. To facilitate easier transportation

2. To prevent acetone from escaping

3. To reduce the risk of leaks

4. To minimize the chance of corrosion

The correct answer is: To prevent acetone from escaping

Acetylene cylinders should be stored in an upright position primarily to prevent acetone, which is used as a solvent to stabilize the acetylene gas within the cylinder, from escaping. When acetylene is stored in its gaseous form, it is dissolved in acetone under pressure. If the cylinder is laid horizontally or is not upright, the acetone can escape, potentially leading to an unstable pressure within the cylinder and a risk of combustion or explosion. Keeping the cylinders upright ensures that the acetylene remains dissolved in the acetone, maintaining safety and the integrity of the gas. While other factors may contribute to safety practices, such as minimizing leaks or preventing corrosion, the primary concern specifically regarding acetylene cylinders relates directly to the containment of acetone and stabilizing the gas. Therefore, the upright storage of acetylene cylinders is essential for maintaining safe conditions and preventing the escape of acetone.