Intro to Millwright Practice Exam

Which of the following is NOT considered a type of stored hazardous energy?

1. Chemical

2. Electrical

3. Mechanical

4. Biological

The correct answer is: Biological

Stored hazardous energy refers to energy that can potentially cause harm due to its stored state, and it comes in various forms. Chemical energy is stored in the bonds of chemical compounds and can be released during a chemical reaction, potentially leading to explosions or other hazardous situations. Electrical energy can also pose significant risks; for instance, charged capacitors or batteries store energy that can discharge unexpectedly, leading to electrical shocks or fires. Mechanical energy is found in systems like compressed springs or pressurized fluids, where releasing this energy can result in dangerous movements or failures of equipment. In contrast, biological energy isn't typically classified as a type of stored hazardous energy in the same context. While biological hazards certainly exist, they don't fall under the same category as the physical and chemical forms of stored energy that primarily relate to mechanical or environmental safety risks. Therefore, biological energy is distinct from the other three options and is the correct choice in this context.