NCCER Millwright Practice Exam

What is typically the primary hazard of using compressed gases?

1. Corrosion risk

2. Fire and explosion risk

3. Exposure to toxins

4. Environmental contamination

The correct answer is: Fire and explosion risk

The primary hazard associated with using compressed gases is indeed the risk of fire and explosion. Compressed gases can be flammable, and when released, they can create a highly combustible environment. If the gas comes into contact with an ignition source, it can lead to catastrophic explosions or fires. For instance, gases such as acetylene, propane, or hydrogen are notorious for their flammable properties. When these gases are stored under high pressure, a leak can lead to rapid expansion and dispersion into surrounding areas, heightening the risk of igniting. In addition, the pressurized containers can become projectiles if they rupture or explode, posing significant dangers to personnel and equipment. While other hazards such as corrosion risk, exposure to toxins, and environmental contamination can be considerations in the handling of compressed gases, they are not the primary concern when compared to the immediate fire and explosion risks that can arise from improper handling, storage, or leakage of these gases. Understanding this risk is crucial for ensuring safety in environments where compressed gases are utilized.