Air Brakes and Train Handling Rules - Alaska Railroad

61 Air Brake Tests1. Charge the brake system to within 15 psi of the equalizing reservoiras indicated by an accurate gauge at the rear of the train.NOTE: Air flow must not exceed 60 CFM.2. When you receive a signal to apply the brakes, make a 20 psibrake pipe reduction.3. Inspect the car(s) or train according to the appropriate air braketest.4. When you receive a signal to release the brakes, move theautomatic brake valve handle to RELEASE.NOTE: After the air brake test is completed, the Air FlowIndicator does not need to return to its original position if therequired air pressure has been restored to the rear of thetrain and the brakes have released.61.3.3 Brake Pipe Leakage MethodThe brake pipe leakage method tests brake pipe integrity by measuringthe amount of leakage in a closed system.A. When To Use Brake Pipe Leakage MethodIf the train does not meet AFM test conditions, conduct a brake pipeleakage test.B. Procedure For Conducting Leakage TestTo conduct a leakage test:1. Charge the train brake system to within 15 psi of the equalizingreservoir as indicated by an accurate gauge at the rear of thetrain.2. Wait for the signal to apply the brakes.3. When you receive the signal, reduce brake pipe pressure by20 psi.4. Allow the brake pipe exhaust to stop.61-4 ARRC Air Brakes and Train Handling Manual June 1, 1996