LET Day 9 Review 5/14

  1. List the steps in order for stopping with with train brakes while power is being applied.
    • Advance throttle, if necessary, to adjust train slack
    • Observe locomotive output when making the initial Brake Pipe reduction
    • Make additional Brake Pipe reductions as necessary
    • ref 5553B2
  2. State the 4 steps to stop a train while slack is BUNCHED.
    • Reduce throttle to IDLE, allowing slack to bunch gradually
    • Apply Dynamic Brake to complete bunching slack
    • Increase the dynamic braking output to the desired level
    • Use the train brake, if necessary, to complete the stop. (If speed is below 10 MPH use a continuous service; If speed is above 10 MPH use a split service)
    • ref 5555A
  3. True or False
    While stopped, maintain a Brake Pipe reduction of at least 10 PSI, but not more than Full Service, until the the train is required to move.
    • True
    • ref 5556A
  4. When leaving the train unattended, in what state should the Train Brakes be left in?
    • Full Service
    • ref 5556B
  5. When assigned to a Work Train, Transfer Train, Yard Assignment, or Helper Service and your train will be delayed for 30 minutes in 75 degree weather, what should be done with the locomotive?
    • All locomotives in the consist should be shut down and isolated
    • ref 5401A2B
  6. All crew members are equally responsible for the care of the locomotives being used. List 7 examples of what the crew must adhere to.
    • 1. Do not place feet on any wall, window, or piece of equipment
    • 2. Do not write on, mar or deface any window, wall or piece of equipment
    • 3. Do not damage operating cab equipment
    • 4. Deposit trash in litter bags
    • 5. Keep tools in their proper location
    • 6. Make certain all doors and windows are closed
    • 7. Make certain the cab lights are turned off on trailing locomotives when not in use
    • ref 5405
  7. Make certain that the locomotive wheels turn freely anytime excessive tripping of the ground protective relay causes either of what 2 things?
    • Locomotive to be isolated
    • Traction motor to be cut out
    • ref 5407
  8. What 3 steps should be taken when a traction motor support bearing is suspected of being hot?
    • 1. Stop the movement
    • 2. Report the bearing to the Train Dispatcher and the Mechanical Desk
    • 3. Comply with the instructions you receive
    • ref 5408
  9. Prior to cutting away from and leaving cars, the engineer should make which type of Brake Pipe reduction?
    • Full Service
    • ref 5556C
  10. When starting a train you should avoid excessive tractive effort, keep locomotive speeds steady and do not exceed 2 MPH until the entire train is moving and allow ______.
    • Sufficient time for the train air brakes to release
    • ref 5551
  11. True or False
    You should handle the train in a safe and fuel-efficient manner and take full advantage of throttle adjustments and dynamic braking when conditions permit
    • True
    • ref 5552
  12. When transitioning from power to Dynamic Brake, how long must you remain in the Idle position before moving into Dynamic Braking?
    • 10 seconds
    • ref 5553A2
  13. What is the procedure for stopping your train while the slack is bunched using train brakes without power. (2 steps)
    • 1. Reduce throttle to Idle and allow slack to adjust gradually
    • 2. If necessary, use the Dynamic Brake to adjust slack prior to making an initial Brake Pipe reduction
    • ref 5553B1
  14. What 3 things are required before releasing the train brakes after desired braking has been accomplished? (running release)
    • Brake Pipe air is not exhausting
    • You have made at least a 10 PSI Brake Pipe reduction
    • Brakes on the entire train will be released before the train is reduced to 10 MPH
    • ref 5554A
  15. If operating conditions permit, make a ____ _______ Brake Pipe reduction and make certain the exhaust has stopped for at least __ seconds before releasing the train brakes. (standing release)
    • Full Service
    • 20
    • ref 5554D
  16. What are the 3 most important factors that affect stopping a train?
    • Speed
    • Weight of train
    • Severity of grade
    • ref 5555
  17. What are the 4 steps in order to stop with the slack is STRETCHED?
    • 1. Advance throttle, if necessary, to stretch slack
    • 2. Make initial reduction and actuate
    • 3. As speed decreases, make additional Brake Pipe reduction as necessary and actuate and gradually reduce throttle to prevent developing excessive locomotive output
    • 4. As the movement stops, make sure air is exhausting from the Brake Pipe, place Independent Brake to Full Application, and place throttle to Idle
    • ref 5555B
  18. If the train's momentum prevents stopping short of a submerged area, what 3 things should be done before reaching water?
    • 1. Reverser to center
    • 2. Generator Field Off
    • 3. Throttle in position #8
    • ref 5409
  19. When operating in territories where both Dynamic Braking and pressure maintaining are required in lieu of retainer valves being set, and the train speed is between 20 & 35 MPH, what must be done?
    • Apply train air brakes with at least Minimum Reduction (6-8 PSI) in conjunction with Dynamic Braking
    • ref 5559A
  20. If your train must be stopped on a grade for any reason using an 18 pound or greater Brake Pipe reduction, what must be done before proceeding?
    • Train must be secured and the air system recharged
    • ref 5559A4
  21. While operating on a grade the Dynamic Brake fails while in use, what 2 steps must be taken to prevent harsh slack action?
    • 1. Apply independent brake immediately to avoid rapid run-out slack
    • 2. If necessary, make a Brake Pipe reduction sufficient to control speed and compensate for loss of Dynamic Brake force
    • ref 5652
  22. When must fuel levels be reported to the Mechanical Desk?
    • When they are below 1000 gallons
    • ref 5401B
  23. If you are in doubt that the train speed is being slowed, stopped, or controlled properly while using Dynamic Braking, what action must be taken?
    • Supplement with train brakes
    • ref 5553A
  24. When it becomes apparent that the speed of the train cannot be maintained at or below maximum speed while descending a grade, what action must be taken?
    • Train must be stopped immediately with the train brakes using emergency if necessary
    • ref 5559A5
  25. True or False
    When an undesired emergency application occurs, or when an emergency situation arises and becomes necessary to place the train air brakes in emergency, operate the 2-way EOT emergency toggle switch as soon as possible.
    • True
    • ref 5653D
  26. When ascending a steep grade and your locomotive consist has 8,000 horsepower or more at speeds below 15 MPH, gradually reduce throttle to at least position __ just before the locomotive crests the grade and do not increase the throttle position until the train speed _________.
    • 6
    • Increases
    • ref 55597B
  27. Undesired service applications are indicated by:
    • Increase in the indication of the air flow indicator
    • The sound of excessive regulating valve operation
    • A drop in brake pipe pressure
    • A decrease in train speed or increase of locomotive output without a known cause
    • ref 5654
  28. After cutting away from a train, what must you do with two-way telemetry?
    • Place train in emergency with toggle switch and verify brake pipe pressure drops to 0 PSI
    • ref 5556C5
Card Set
LET Day 9 Review 5/14
LET Day 9 Review