Ben Hirst Fire Apparatus Driver & Operator Exam 1 Practice

Relay pumping aims to keep water moving to the fire by tying multiple pumpers together in a sequence so each one boosts or maintains the pressure as water travels toward the nozzle. When distance, elevation changes, or friction losses would cause a drop, the next pump adds its boost, allowing the forward pump to deliver a steady flow. Operators coordinate throttle settings and monitor pressures to ensure the end discharge stays within the needed range while keeping suctions primed. The other tasks listed—drafting from a single source only, testing foam, or replacing engine oil—aren’t what this method is about.