Which action helps ensure a safe relay operation when hoses are laid out?

• A. Leaving connections loose for quick removal.
• B. Verifying that all connections are secure before charging.
• C. Opening the discharge valves fully before charging.
• D. Ignoring minor leaks to save time.

Answer: (B)

Before charging a relay line, make sure every hose connection is fully seated and secured. When water is introduced under pressure, unsecured fittings can back off, gaskets can blow out, or hoses can whip, putting crew members at risk and compromising the entire relay. Securing all connections ensures the hydraulic path remains intact, pressure builds predictably, and there’s no unexpected disconnection or leakage that could derail the operation.

Leaving connections loose to save time invites failure under pressure. Opening discharge valves fully before charging isn’t necessary and can create sudden surges that stress fittings and cause dangerous water hammer. Minor leaks aren’t something to ignore; they indicate imperfect seals that can worsen once pressurized and lead to failures. Verifying connections before charging is the safest, most reliable step to protect everyone and keep the relay flowing smoothly.