What safety measure should an operator take before cleaning a wet-well that is 20 feet deep?

Before cleaning a wet-well that is 20 feet deep, proper ventilation is crucial for safety. Wet wells can accumulate hazardous gases, such as methane or hydrogen sulfide, which can displace oxygen and pose serious health risks if inhaled. Ventilating the area ensures that any harmful gases are diluted or removed, providing a safer environment for the operator.

Ventilation helps to maintain air quality within the confined space and prevents accidents related to asphyxiation or exposure to toxic substances. This measure adheres to safety protocols that prioritize the health and well-being of workers in potentially dangerous environments, making it essential before any entry or cleaning operation.