True or False: An operator should use a 15% nozzle jet when cleaning a steel hill.

Using a 15% nozzle jet when cleaning a steel hill is appropriate because it provides a balance between effective cleaning and the preservation of the surface being cleaned. A nozzle with a 15% angle creates a focused jet of water that can remove debris and contaminants without causing damage to the surface of the hill. This level of pressure is often sufficient for effective cleaning, ensuring the job is done efficiently while minimizing the risk of harm to the steel structure.

Efficient cleaning in wastewater collection systems often requires carefully chosen equipment and techniques. Using a nozzle that is too powerful or has too narrow a spray pattern could potentially cause wear or damage, while a nozzle that is too wide may not effectively remove the contaminants. The 15% nozzle represents a well-considered approach, prioritizing both cleanliness and the integrity of the surface. Therefore, the assertion that an operator should use a 15% nozzle jet for this task is accurate.