Welding Safety Precautions Quiz

Explanation
Gas metal arc welding is commonly known as MIG welding. This welding process uses a consumable electrode wire and a shielding gas to create an electric arc between the electrode and the metal being welded. The heat generated by the arc melts the electrode and the base metal, creating a weld. MIG welding is widely used in various industries due to its versatility, ease of use, and ability to weld different types of metals.

Explanation
Exposure to zinc fumes can indeed cause metal fume fever. Metal fume fever is a flu-like illness that occurs after inhaling metal fumes, such as zinc, that can be released during welding or other industrial processes. Symptoms of metal fume fever include fever, chills, headache, muscle aches, and fatigue. Therefore, the statement "Exposure to zinc fumes may cause metal fume fever" is true.

Explanation
The correct answer is Transportation because the Department of Transportation is responsible for regulating and ensuring the safety of various transportation systems, including cylinders used for transportation purposes. They establish guidelines and requirements for the inspection of cylinders to prevent accidents and ensure compliance with safety standards.

Explanation
Acetylene does not have a narrow flammable range. In fact, it has a very wide flammable range, making it highly explosive. This is due to its low ignition energy and high heat of combustion. Acetylene can ignite and burn in a wide range of concentrations with oxygen, making it a dangerous substance to handle without proper precautions.

Explanation
Backflow prevention should be provided for oxygen cylinders because it is essential to prevent the backflow of contaminants or other gases into the oxygen supply. Backflow can occur when there is a pressure difference between the oxygen cylinder and the surrounding environment, causing the flow of gases in the opposite direction. This can lead to the contamination of the oxygen supply, which can be extremely dangerous for patients who rely on oxygen therapy. Therefore, it is necessary to have backflow prevention mechanisms in place to ensure the purity and safety of the oxygen being delivered.