Question 2548 Deck General

The correct answer is C) A fusible link. According to U.S. Coast Guard regulations, quick-closing shut-off valves on fuel lines are required to have a fusible link as the fire safety control feature. The fusible link is designed to melt at a specific temperature, typically around 165°F, causing the valve to automatically close and shut off the fuel supply in the event of a fire. This helps contain the fire and prevent it from spreading through the fuel system. The other options are incorrect because they do not match the specific regulatory requirement for a fusible link. A manual cut-off switch (A) or an electrical cut-off switch (D) would require a person to actively engage the valve, whereas the fusible link provides an automatic shut-off mechanism. A water spray actuator (B) is not the standard fire safety control feature specified for quick-closing shut-off valves.