A train encounters an unexpected emergency brake application due to a broken air hose. Detail the steps a conductor must take, in the correct order, to safely inspect the train and resume movement.

When a train experiences an unexpected emergency brake application, particularly when a broken air hose is suspected, the conductor must take specific steps, in order, to ensure safety and facilitate the resumption of movement. First, the conductor must immediately notify the locomotive engineer and the train dispatcher about the emergency brake application and the suspected cause. Clear communication at the outset is essential for coordinated action. Second, after communicating with the engineer, the conductor must ascertain the location of the broken air hose. This typically involves a controlled walk along the train, listening for the sound of escaping air, which indicates the location of the break. Safety protocols, such as situational awareness and proper footing, are critical during this process. Third, upon locating the broken air hose, the conductor must visually inspect the surrounding area, including the cars, trucks (wheel assemblies), and track, for any signs of damage or derailment. This inspection helps identify any additional issues that may have resulted from the emergency brake application. Fourth, the conductor must take measures to secure the train against unintended movement. This often involves applying hand brakes on a sufficient number of cars, especially if the train is on a grade. The number of hand brakes required depends on the grade and the weight of the train. Fifth, once the train is secured, the conductor must replace the broken air hose with a serviceable one. This includes ensuring the replacement hose is of the correct type and length, and that all connections are properly tightened to prevent further leaks. Sixth, after replacing the air hose, a thorough air brake test must be performed to verify the integrity of the repair and the overall functionality of the air brake system. This test typically includes a brake pipe leakage test and a verification that all brakes apply and release correctly. Seventh, the conductor must again notify the locomotive engineer and the train dispatcher that the repairs are complete and the air brake system is functioning as intended. This ensures that all parties are aware of the train's status. Eighth, before resuming movement, the conductor must ensure that all hand brakes applied to secure the train are fully released. Failure to release hand brakes can cause damage to equipment and increase the risk of derailment. Ninth, with confirmation from the engineer, and in accordance with the dispatcher's instructions, the conductor confirms that it is safe to proceed. This confirmation is only given after all safety measures have been verified. Tenth, the conductor must thoroughly document the incident, including the location of the broken air hose, the actions taken, the repairs performed, and any other relevant details. This documentation is crucial for accident investigation, safety analysis, and regulatory compliance.