How would you put an additional pump online?

To put an additional pump online effectively, opening the suction and discharge valves gradually is the best practice. This approach allows the pump to build pressure gradually, which helps prevent water hammer or sudden pressure surges that can occur if valves are opened too quickly.

By opening the suction valve first, you allow the pump to begin drawing water, ensuring that it is actually filling and working before you introduce it into the system. Opening the discharge valve gradually allows the water to flow smoothly into the system, helping to balance pressures and ensuring that the additional pump integrates properly without causing disruptions to the existing flow.

Gradual adjustments provide control over the transition and help to maintain system stability, which is particularly crucial in fire protection systems where valve positions and pressures need to be carefully managed. This method minimizes the risk of damaging the pump or causing instability in the communal system.