What is the proper action to take when flushing wastewater lines with a fire hydrant and flow control is necessary?

When flushing wastewater lines using a fire hydrant, controlling the flow is crucial to ensure that the flushing process is effective and safe. Equipping with an additional valve to manage flow allows operators to adjust the pressure and volume of water being released. This control can help prevent water hammer, which could damage the pipes, and also minimizes the risk of scouring or disturbing sediments in the wastewater lines.

By using an external valve, operators can achieve the desired flow rate for effective cleaning without compromising the integrity of the system. This method also allows for adjustments to be made easily during the flushing process, catering to specific conditions that may arise, such as changes in pipe conditions or varying water pressure. This level of control is essential for maintaining system stability and ensuring that the flushing is done in an environmentally responsible manner.