Final answer:
Potential sources of hazardous energy include electrical, mechanical, and pneumatic sources. Electrical hazards come in the form of thermal and shock risks, with safety systems in place to prevent them. Mechanical and pneumatic energies also pose their own risks and require appropriate safety measures.
Step-by-step explanation:
The potential sources of hazardous energy include electrical, mechanical, pneumatic, and possibly memetic (although 'memetic' does not refer to a type of physical energy and may be a typo). When discussing electrical hazards, there are two main types: thermal and shock. Thermal hazards occur when excess electric current leads to undesired heating effects, potentially causing a fire. Shock hazards happen when electric current passes through a person, with effects that can range from painful to lethal. Other forms of hazardous energy are mechanical, which can cause harm via moving parts or stored mechanical energy; pneumatic, associated with compressed air or gas systems; and chemical energy, related to chemical reactions.
To mitigate these hazards, careful design and maintenance of electrical safety systems and devices are crucial. These include circuit breakers, insulation, proper wiring, and personal protective equipment to prevent both thermal and shock hazards. It's worth noting that each energy source requires specific measures tailored to its risks.