G2 Gas Fitter Practice Exam

When transporting cylinders, how should they be secured?

1. In a horizontal position

2. In an upright position, with the relief valve communicating with vapor space only

3. In any secure location

4. In a locked storage container

The correct answer is: In an upright position, with the relief valve communicating with vapor space only

Securing gas cylinders in an upright position is essential for safety during transportation. This method allows the relief valve to be positioned in a way that it only communicates with the vapor space of the cylinder, which is crucial for preventing the escape of gas. If the cylinder were to leak or if the pressure inside increased, the vapor space would allow for gas to vent safely without the risk of liquid gas being expelled, which could create a hazardous situation. Additionally, securing the cylinder in the upright position minimizes the risk of it tipping over, which could not only damage the cylinder but also create safety hazards such as the potential for an explosive release of gas. The upright position also helps to correctly manage the internal pressure systems and ensures that the cylinder adheres to safety standards set by regulatory bodies. Transporting cylinders horizontally or in any insecure location poses significant dangers, as it increases the likelihood of accidents, leaks, or ruptures. Using a locked storage container may provide security, but it does not address the correct positioning or safety measures required during transport.