Texas Wastewater Class B Practice Exam

When using Hydraulic Hydro Jetting sewer cleaning equipment, from which manhole should the operator clean toward?

1. Any manhole

2. Upstream manhole

3. Downstream manhole

4. Clear or open manhole

The correct answer is: Clear or open manhole

When using Hydraulic Hydro Jetting sewer cleaning equipment, the operator should clean toward a clear or open manhole. This approach is important because it ensures that any debris or blockages removed during the cleaning process can flow freely toward an exit point, preventing clogs further downstream. Choosing a clear or open manhole minimizes the risk of creating additional blockages in the sewer line and allows for more effective waste removal. Furthermore, working towards an accessible point enables better monitoring and control of the operation, promoting safer working conditions. Cleaning toward an upstream or downstream manhole could create restrictions and potential overflow situations, as these options may not provide a clear path for debris removal. Therefore, directing the cleaning efforts toward a clear or open manhole is the best practice in this scenario.