CS 5.1

Question 1

Vital MCBs tripping

Question 2

AWS/TPWS Isolation

Answer 2

w/ CP - 100mph
w/o CP - 60mph
PV - 40mph

Question 3

EBS isolation

Answer 3

• De-train at next available location
• Train then out of service

Question 4

TIS isolation

Answer 4

• De-train at next available location
• Train then out of service to be repaired
• Need to physically check doors are closed before moving

Question 5

Defective WSP

Answer 5

If not confident of stopping train:
- continue at speed in line with braking ability
- de-train at next available location
- Train then out of service to be repaired

If good conditions and braking normally:
- can continue journey
- repaired at end of day

Question 6

DSD/vigilance defective/isolated

Answer 6

• w/ CP 100 mph
• w/o CP 60 mph
• if AWS/TPWS defective/isolated also then remove from service

Question 7

Hot axle box/bearing

Answer 7

• move passengers out of affected coach
• detrain at next available location
• 10mph, 5mph over points
• if no evidence of overheating, can continue at normal speed for 50 miles and reassessed.

Question 8

Defective headlights/taillights

Answer 8

• 75mph with toclite
• 20mph any other lamp

Question 9

Defective horn

Answer 9

• 20mph
• de-train at next available location

Question 10

Defective TCA

Answer 10

2 vehicles - isolate in affected vehicle
3/4 vehicles, with at least one working on front two and one working on last two:
leaffall: detrain, isolate on affected vehicle
not leaffall: isolate on affected vehicle
multiple units with at least one working on front two and one working on rear two: isolate on affected vehicle
Not as above:
leaffall - detrain
not leaffall - train can continue with authority from signaller / control

Question 11

Tripcock tripped

Question 12

Defective cab radio

Answer 12

• local failure 100mph
• network failure 60mph

Question 13

PassCom

Answer 13

part of train:
- staff member to patrol if available
- move passengers from affected vehicles if possible
- if not possible then out of service
whole train:
- de-train at next available location

Question 14

Air Suspension

Answer 14

• move passengers from affected coach
• can continue at line speeds

Question 15

PA/PIS defective

Answer 15

PIS: make manual announcements
PA: part of train - move passengers from affected vehicle
all train: patrol train if possible, detrain if not.

Question 16

Windscreen obscured/defective

Answer 16

• reduce speed, sound horn regularly
• detrain
• train can start another journey if not leading
• needs competent person with route knowledge

Question 17

Saloon window broken

Answer 17

inner pane - remove passengers from coach and lock out.
outer pane - none

Question 18

Defective speedometer

Answer 18

• driver to proceed at caution
• de-train at next available location

Question 19

Defective OTDR

Answer 19

Train can continue journey as long as OTDR working in another cab

Question 20

Engine fault & isolation

Answer 20

• <50% of engines: move passengers to adjacent coach if travelling in darkness. Aim to complete journey
• > 50% of engines: de-train at next available location

Question 21

Occasions when a competent person must accompany drivers

Answer 21

During darkness, poor visibility, or through a tunnel where being asked to examine the line.

Question 22

Fault Severity Levels

Answer 22

165: Flashing > Steady Fault Light
168: Flashing > Steady > Flashing with Direction Switch to OFF

Question 23

How to reset TPWS equipment

Answer 23

• Break release button and appropriate brake demand button

Question 24

How to isolate the fire system

Answer 24

Isolation Switches Panel

Question 25

Wheelflats

Answer 25

Serious but not other obvious damage: <20mph, de-train at next available location >60mm/flange formed/pot. tyre shifted: don't move until RST to examine and then move.

Question 26

Door faults

Answer 26

- Lock out singular doors if needed - Door behind cab isolated, move passengers from vehicle - Also for both doors on same side or same end