What is the "buddy system" in confined space operations?

The "buddy system" in confined space operations refers to a safety measure where workers enter confined spaces in pairs. This system enhances safety by ensuring that immediate assistance is available if one worker encounters an emergency or difficulty inside the confined space. When two workers are present, they can monitor each other’s conditions and provide timely help, which significantly reduces the risk of accidents or critical situations going unnoticed. This practice acknowledges the inherent risks associated with confined spaces, such as limited escape routes, potential toxic atmospheres, and other hazards that may require rapid response.

In contrast, the other options do not accurately define the "buddy system." For instance, while ensuring experienced workers enter confined spaces is essential for safety, it does not inherently involve the concept of pairing up for immediate support. The idea of rotating workers to prevent fatigue does contribute to safe operations but isn't related to the buddy system's emphasis on having a partner for assistance. Similarly, having a supervisor present is important for overseeing safety but does not embody the core principle of the buddy system, which revolves around teamwork and immediate mutual support among workers entering potentially hazardous environments.