When is it required to drain the water system of a locomotive?

When is it required to drain the water system of a locomotive?

• A. After Every Trip
• B. Only In Summer
• C. If An Engine Dies And Cannot Be Restarted, The Engine Must Be Drained If The Temperature Is Below 32 Degrees Fahrenheit
• D. If Water Level Gauge Reads Full

Answer: (C)

Freezing protection for the locomotive’s cooling system is the idea here. If the engine dies and can’t be restarted, water may sit in the cooling passages. When the temperature falls to 32°F or below, that water can freeze and expand, potentially cracking the engine, radiator, or hoses. Draining removes the water so nothing is left to freeze, preventing damage. This specific scenario—a dead engine that can’t be restarted in freezing weather—dictates draining. It wouldn’t be required after every trip, isn’t about summer, and a full water gauge reading doesn’t by itself indicate a need to drain.

Freezing protection for the locomotive’s cooling system is the idea here. If the engine dies and can’t be restarted, water may sit in the cooling passages. When the temperature falls to 32°F or below, that water can freeze and expand, potentially cracking the engine, radiator, or hoses. Draining removes the water so nothing is left to freeze, preventing damage. This specific scenario—a dead engine that can’t be restarted in freezing weather—dictates draining. It wouldn’t be required after every trip, isn’t about summer, and a full water gauge reading doesn’t by itself indicate a need to drain.