OHST Practice Exam

A flammable liquid "safety" can is designed to minimize the risk of fire and explosion when handling and storing flammable liquids. Certain features are essential for the safety can's function, while others may not be necessary.

The correct choice is that a fusible link is not a requirement for a flammable liquid safety can. A fusible link is a type of safety device that melts at a specific temperature to prevent fire or explosion hazards in some contexts. However, in the case of safety cans, it is not considered a standard requirement.

On the other hand, features such as a spring-loaded cover that opens at 5 psi, a flame arrestor, and metal construction are critical components. The spring-loaded cover serves to relieve pressure and automatically close, which is essential for preventing the accidental release of flammable vapor. A flame arrestor is a device that prevents flames from traveling back into the container, providing additional safety. Lastly, metal construction is important because it can better withstand the heat and pressure that may arise during an incident, unlike some other materials that could fail more easily in such situations.

These components collectively ensure that safety cans are effective for safely storing and transferring flammable liquids, whereas the absence of a fusible link does not