Who must know the hazards associated with a specific confined space?

The correct answer emphasizes the critical role of the authorized entrant in understanding the hazards associated with a specific confined space. Authorized entrants are those individuals who are specifically trained and permitted to enter a confined space for a particular task. Their training equips them with knowledge about the specific risks they may face, such as toxic atmospheres, engulfment hazards, or other physical dangers present in the confined space.

This knowledge is essential for safe operations, as authorized entrants must be able to recognize and respond to potential hazards, ensuring their own safety and, by extension, the safety of others involved in the operation. By being aware of these hazards, they can make informed decisions about whether or not it is safe to proceed with the entry, and they can take appropriate safety measures such as using personal protective equipment or employing monitoring devices.

While the attendant, entry supervisor, and employer also have important roles in confined space operations, the authorized entrant's understanding of specific hazards directly influences their safety and the effectiveness of the work being performed. The attendant is responsible for monitoring the safety of the entrant, the entry supervisor oversees the entire operation, and the employer is responsible for overall safety policies and training; however, it's the authorized entrant who must know and address the specific hazards during their actual entry.