Describe the basic procedure to secure water from a hydrant.

• A. Connect supply hose to pumper, crack hydrant slowly, and monitor for adequate water supply and pressure
• B. Open hydrant fully and never monitor pressure
• C. Attach hose to hydrant, close hydrant quickly
• D. Water is secured by pumping from engine alone

Answer: (A)

Securing water from a hydrant starts with establishing a reliable supply line by attaching a supply hose from the pumper to the hydrant. Then open the hydrant just enough to admit water and purge air—the slow “crack” lets air escape and prevents a water hammer effect when full pressure is applied. As water starts to flow, continuously monitor the water supply and pressure, so you can confirm the pump can maintain the necessary discharge pressure and flow. Once a steady, adequate flow is established, you can fully use the hydrant as needed and keep an eye on gauges and flow to stay within target pressures.

This approach is best because it creates a controlled, dependable water source, clears air from the line, and provides real-time feedback to the pump operator. Opening the hydrant fully without monitoring pressure, or closing it too quickly, disrupts the supply. Relying on the engine alone without a hydrant connection isn’t a functional method for securing large or reliable water flow.