What is the first step to add another pump online?

To safely add another pump online, the first step is to open the suction side valve. This ensures that the new pump has access to the fluid it needs to operate effectively. Opening the suction valve before initiating the pump allows fluid to flow into the pump, which helps prevent damage caused by running the pump dry.

By ensuring the suction line is clear and accessible, the pump can prime correctly and begin operation smoothly without encountering cavitation or air locks that could negatively affect its performance. Once the suction valve is opened, further steps can be taken, such as adjusting discharge settings or gradually increasing the pump speed, but those actions should follow the opening of the suction valve to ensure the pump is ready to start.

The other options would not be appropriate as initial steps for adding a pump online. Closing the discharge valve prior would prevent flow and potentially cause excessive pressure buildup, while adjusting throttle settings or increasing the pump speed prematurely can lead to operational issues if the pump is not already primed and ready to handle the incoming fluid. Therefore, opening the suction side valve is the crucial first action in this process.