Union Pacific -Air Brakes Questions
And Answers With Verified Study
Solutions Rated A+
What must you do before coupling air hoses together? - CORRECT ANSWER-
Shake debris out of hoses and blow all condensation from locomotive brake pipe
or yard air line.
What should be done to prevent an air hose from dragging whenever the train is
moved? - CORRECT ANSWER-Air hoses inspected for condition, properly
coupled, and all parts of brake equipment secured.
Unless brakes fail en route, how many cars must have operative brakes? -
CORRECT ANSWER-All cars : 100%
What percentage of operative brake equipment must trains have under all
circumstances? - CORRECT ANSWER-At least 85%
Who must be notified when a car's brake equipment fails en route? - CORRECT
ANSWER-Leave information for relieving crew, and notify Dispatcher or
Mechanical Help Desk.
What ITEM is referenced to determine the number of operative brakes in train? -
CORRECT ANSWER-SSI, Item 2-F, Maximum Speeds:
Tons Per Operative Brake (TPOB)
How must en route car brake failure be documented ? - CORRECT ANSWER-Must
be tagged, (*"Bad Order" tag*), on both sides of car and noted on train
documentation.
Who is in charge while the air brake test is being conducted? - CORRECT
ANSWER-Employee performing the air brake test.
Before conducting the air brake test, what must the person performing the air
brake test ensure? - CORRECT ANSWER-All employees are safely positioned
before beginning test.
What is the air pressure regulating valve, also known as, the brake pipe pressure,
for yard and freight service set to? - CORRECT ANSWER-90 psi
, What three methods are used to determine the air pressure at the rear of a train? -
CORRECT ANSWER-Accurate gauge, E.O.T. (End-of-Train), and a distributed
power locomotive.
When an air brake test requires an inspection to determine that the brakes apply
and release on the rear car of the train, what action(s) would fulfill this
requirement? - CORRECT ANSWER-When either an EOT or power consist
attached to the rear of the train indicates the following: A decrease in pressure of
5 PSI (Brakes Applied) and an increase in pressure of 5 PSI (Brakes Released).
**Application and Release Test**
What is the initial, (preferred), method to test brake pipe leakage? - CORRECT
ANSWER-Air Flow Method, (AFM)
What equipment must the locomotive be equipped with, if using the Air Flow
Method? - CORRECT ANSWER-AFM Indicator with a direct reading of air flow in
increments no greater than 10 CFM, (Cubic Feet per Minute)
The brake system for freight trains must be charged to what minimum
requirement at the REAR before an air test can begin? - CORRECT ANSWER-75
PSI
Using the Air Flow Method, (AFM), how many CFM cannot be exceeded for test to
be complete? - CORRECT ANSWER-*60 CFM*, if air flow exceeds this
measurement then the train must be inspected for leakage.
What action is required if air leakage exceeds the maximum amount? - CORRECT
ANSWER-Train must be inspected for leakage and once leakage is corrected, the
train must be re-tested.
What test is required when a train does not meet the AFM requirements of 60
CFM? - CORRECT ANSWER-Brake Pipe Leakage Method
What is the minimum PSI the brake system must be charged to as indicated by a
gauge or device at the rear of your train? - CORRECT ANSWER-75 PSI
During the last *1 minute wait* for the *"Brake Pipe Leakage Test"*, what is the
maximum allowed leakage? - CORRECT ANSWER-Not to exceed 5 PSI
What is the proper piston travel for *truck-mounted* brake cylinders? - CORRECT
ANSWER-Must be within the limits of the travel indicator when brakes are applied
and provide brake shoe clearance when brakes are released.
What government agency regulates the inspection and testing of brake
equipment on railroad locomotives and cars? - CORRECT ANSWER-Federal
Railroad Administration (FRA)
And Answers With Verified Study
Solutions Rated A+
What must you do before coupling air hoses together? - CORRECT ANSWER-
Shake debris out of hoses and blow all condensation from locomotive brake pipe
or yard air line.
What should be done to prevent an air hose from dragging whenever the train is
moved? - CORRECT ANSWER-Air hoses inspected for condition, properly
coupled, and all parts of brake equipment secured.
Unless brakes fail en route, how many cars must have operative brakes? -
CORRECT ANSWER-All cars : 100%
What percentage of operative brake equipment must trains have under all
circumstances? - CORRECT ANSWER-At least 85%
Who must be notified when a car's brake equipment fails en route? - CORRECT
ANSWER-Leave information for relieving crew, and notify Dispatcher or
Mechanical Help Desk.
What ITEM is referenced to determine the number of operative brakes in train? -
CORRECT ANSWER-SSI, Item 2-F, Maximum Speeds:
Tons Per Operative Brake (TPOB)
How must en route car brake failure be documented ? - CORRECT ANSWER-Must
be tagged, (*"Bad Order" tag*), on both sides of car and noted on train
documentation.
Who is in charge while the air brake test is being conducted? - CORRECT
ANSWER-Employee performing the air brake test.
Before conducting the air brake test, what must the person performing the air
brake test ensure? - CORRECT ANSWER-All employees are safely positioned
before beginning test.
What is the air pressure regulating valve, also known as, the brake pipe pressure,
for yard and freight service set to? - CORRECT ANSWER-90 psi
, What three methods are used to determine the air pressure at the rear of a train? -
CORRECT ANSWER-Accurate gauge, E.O.T. (End-of-Train), and a distributed
power locomotive.
When an air brake test requires an inspection to determine that the brakes apply
and release on the rear car of the train, what action(s) would fulfill this
requirement? - CORRECT ANSWER-When either an EOT or power consist
attached to the rear of the train indicates the following: A decrease in pressure of
5 PSI (Brakes Applied) and an increase in pressure of 5 PSI (Brakes Released).
**Application and Release Test**
What is the initial, (preferred), method to test brake pipe leakage? - CORRECT
ANSWER-Air Flow Method, (AFM)
What equipment must the locomotive be equipped with, if using the Air Flow
Method? - CORRECT ANSWER-AFM Indicator with a direct reading of air flow in
increments no greater than 10 CFM, (Cubic Feet per Minute)
The brake system for freight trains must be charged to what minimum
requirement at the REAR before an air test can begin? - CORRECT ANSWER-75
PSI
Using the Air Flow Method, (AFM), how many CFM cannot be exceeded for test to
be complete? - CORRECT ANSWER-*60 CFM*, if air flow exceeds this
measurement then the train must be inspected for leakage.
What action is required if air leakage exceeds the maximum amount? - CORRECT
ANSWER-Train must be inspected for leakage and once leakage is corrected, the
train must be re-tested.
What test is required when a train does not meet the AFM requirements of 60
CFM? - CORRECT ANSWER-Brake Pipe Leakage Method
What is the minimum PSI the brake system must be charged to as indicated by a
gauge or device at the rear of your train? - CORRECT ANSWER-75 PSI
During the last *1 minute wait* for the *"Brake Pipe Leakage Test"*, what is the
maximum allowed leakage? - CORRECT ANSWER-Not to exceed 5 PSI
What is the proper piston travel for *truck-mounted* brake cylinders? - CORRECT
ANSWER-Must be within the limits of the travel indicator when brakes are applied
and provide brake shoe clearance when brakes are released.
What government agency regulates the inspection and testing of brake
equipment on railroad locomotives and cars? - CORRECT ANSWER-Federal
Railroad Administration (FRA)
