Which test medium is prohibited from being used for testing gas piping?

Which test medium is prohibited from being used for testing gas piping?

• A. Helium
• B. Carbon dioxide
• C. Oxygen
• D. Nitrogen

Answer: (C)

Using oxygen as a test medium for gas piping is prohibited due to its highly reactive nature. Oxygen supports combustion, and the presence of it in conjunction with natural gas or any flammable material can create a dangerous situation. The risk of explosion or fire increases significantly when oxygen is used since it can promote rapid combustion. For safety reasons and to prevent hazardous conditions, alternative non-combustible gases such as nitrogen, which is inert, are recommended for testing purposes. This ensures that any potential leaks can be detected without the risk of igniting a fire or causing an explosion.

Using oxygen as a test medium for gas piping is prohibited due to its highly reactive nature. Oxygen supports combustion, and the presence of it in conjunction with natural gas or any flammable material can create a dangerous situation. The risk of explosion or fire increases significantly when oxygen is used since it can promote rapid combustion. For safety reasons and to prevent hazardous conditions, alternative non-combustible gases such as nitrogen, which is inert, are recommended for testing purposes. This ensures that any potential leaks can be detected without the risk of igniting a fire or causing an explosion.