Which method is used to bypass ruptures in the firemain system?

• A. Rig jumper hoses
• B. Deploy a temporary pump
• C. Switch to an alternate power source
• D. Close the main supply valve

Answer: (A)

When a firemain ruptures, the most effective way to keep firefighting capability intact is to bridge the damaged section with jumper hoses. Rigging jumper hoses involves linking a pressurized, undamaged portion of the firemain on one side of the rupture to the portion on the other side, bypassing the leak and restoring a continuous, pressurized water path to outlets and monitors. This directly preserves the system’s ability to deliver water where it’s needed, minimizing disruption to firefighting operations.

Other options don’t achieve that same result: deploying a temporary pump might add a new water source but doesn’t reconnect the damaged main, switching to an alternate power source doesn’t fix the water network, and closing the main supply valve would cut off water entirely. The bypass with jumper hoses is the approach that keeps the firefighting loop intact despite the rupture.