Define "protective systems" in the context of excavation work.

In the context of excavation work, "protective systems" specifically refer to systems that are implemented to prevent cave-ins and to protect workers engaged in excavation activities. These systems are crucial for ensuring the safety of personnel working near or within excavated areas, where the risk of collapsing soil is a significant hazard.

Protective systems can include methods such as trench boxes, shoring, and bracing that maintain the integrity of the excavation site and provide a secure working environment. The primary focus of these systems is to mitigate risks associated with soil movement and to safeguard workers from serious injuries or fatalities that could occur as a result of a cave-in.

This definition underscores the importance of proactive safety measures in excavation work, as they are essential for compliance with safety regulations and for creating a secure work environment. Other options, while relevant to various aspects of project management and efficiency, do not pertain to the core intent of protective systems in excavation safety.