Describe how you would coordinate with a second pump operator during a relay operation to maintain consistent discharge pressure at the nozzle.

• A. Ignore the upstream operator and rely on trial-and-error.
• B. Communicate target discharge pressure, monitor gauges from both pumps, adjust upstream pump to maintain consistent nozzle pressure, and confirm with the nozzle team.
• C. Only communicate after finishing operation.
• D. Have the nozzle team adjust themselves without pump coordination.

Answer: (B)

Maintaining a steady nozzle pressure in relay pumping comes from clear communication and coordinated control of both pumps. Start by agreeing on a target discharge pressure for the nozzle, based on hose length, friction losses, elevation changes, and the nozzle type. Have that target shared with both operators so everyone knows the goal. As the relay runs, watch gauges on both pumps and the nozzle pressure continuously, so you can detect any drift quickly. The upstream pump operator should adjust discharge pressure to keep the nozzle pressure at the target, counteracting changes in friction losses and flow as the relay progresses. The downstream operator confirms with the nozzle team that the stream remains steady and within the desired range, making further adjustments if needed. Regularly checking in with the nozzle team ensures everyone stays synchronized and the water flow stays constant, which improves accuracy, safety, and effectiveness in delivering the fire stream. This approach avoids guesswork, supports timely adjustments, and keeps the operation under tight control.