Anesthesia Technician Practice Exam

What is the primary function of a rupture disk on a gas cylinder?

1. To control gas flow

2. To prevent over-pressurization

3. To indicate the gas type

4. To maintain cylinder stability

The correct answer is: To prevent over-pressurization

The primary function of a rupture disk on a gas cylinder is to prevent over-pressurization. A rupture disk is a safety device designed to act as a pressure relief mechanism. It is a thin material that ruptures or breaks when the internal pressure exceeds a predetermined level. This ensures that excess pressure does not build up to dangerous levels within the cylinder, which could lead to catastrophic failure, including an explosion or rupture of the cylinder itself. By providing a predetermined path for gas to escape, the rupture disk helps maintain the integrity of the gas cylinder and protects both equipment and personnel from the hazards associated with over-pressurization. Other functions listed, such as controlling gas flow, indicating gas type, or maintaining cylinder stability, are not the primary roles of the rupture disk. Gas flow is typically managed by regulators and valves, while gas identification is usually done through labeling or color codes. Stability is more related to the design and handling of the cylinder rather than a feature associated with the rupture disk.