Tracks to Standard

Question 1

Formalities Before Getting to Site?
(x7)

Answer 1

1. Get AWC issued by authoriser fully covering work.
2. Ensure that staff, tools and equipment are correct and on site.
3. Book in with CSS. (Station Supervisor)
4. Complete understanding with the Track Operations Representative. (P-Way)
5. Arranged adequate protection. (Line Controller)
6. Inform Fault Report Centre of your location, scope of work and estimated finish time.
7. Inform Signaller of the site and work to be carried out (Control-Room). Request to take control of the site

Question 2

Initial Actions Before Starting Work?
(x3)

(Isolation & Sketch)

Answer 2

1. Test meter.
2. Remove ‘Q’ and ‘R’ fuses of working track (+Adjacent track ‘R’ fuses).
3. Check track connections (Make Sketch) and disconnect all wires and equipment.

Question 3

Getting Track to Standard
(x4)

(Ballast Leakage Test)

Answer 3

1. Test block joint on Ohms
2. Adjacent ‘R’ fuses replaced
3. Extraneous voltage test (<0.5V R1-R3)
4. Induced loop test (Dead short ‘T’ end <0.2V R1-R3)

Question 4

Getting Track to Standard
(x4)

(Relay Tests)

Answer 4

1. Replace R’ and ‘Q’ fuses (Working Track)
2. Relay energisation check (1/3 tunnel) (2/3 outside)
3. BX100V test on ‘Q1’ to earth
4. Q2 break test (Relay fully de-energises, front contacts break)

Question 5

Getting Track to Standard
(x4)(+1)

(Opposition Tests)

Answer 5

1. Capacitor in section (Note value of capacitor) (O/P to earth = Track volts)
2. TR-GR test (Break R1 or R3 on GR, TR de- energises)
3. Top TDB links in section (Link to earth = Track volts)
4. Opposition (V1+V2=V3) (Both ends)

[1ohm shunt (Extremities and middle) (Observe TR fully de-energises and front contacts break)]

Question 6

Getting Track to Standard
(x4)

(Gauging)

Answer 6

1. Reinstate Position Detector and gauge (If applicable)
2. Gauge Trainstop (If applicable)
3. Gauge Tripcock Tester (if applicable)
4. Check all signals can clear

Question 7

Formalities Before Leaving Site?
(x6)

Answer 7

1. Site tidy
2. Give up protection
3. Inform Signaller/SOM that work has been completed
4. Clear AWC with Fault Report Centre
5. Control movement of trains until track proved to shunt
6. Sign out with CSS

Question 8

Full Tracks to Standard

Answer 8

Initial actions

Get AWC issued by authoriser fully covering work.
Ensure that staff, tools and equipment are correct and on site.
Book in with CSS. (Station Supervisor)
Complete understanding with the Track Operations Representative. (P-Way)
Arranged adequate protection. (Line Controller)
Inform Fault Report Centre of your location, scope of work and estimated finish time.
Inform Signaller of the site and work to be carried out (Control-Room). Request to take control of the site

Checks before work (-1 for any test missed)

Test meter
Remove ‘Q’ and ‘R’ fuses (Adjacent R’ fuses)
D Check track connections and disconnect

After rails have been installed (-2 for any test missed)

Test block joint on Ohms
Adjacent ‘R’ fuses replaced
Extraneous voltage test (<0.5V R1-R3)
Induced loop test (Dead short ‘T’ end <0.2V R1-R3)

Replace R’ and ‘Q’ fuses
Relay energisation check (1/3 green (tunnel), 2/3 green (outside and tunnel mouths)
BX100V test on ‘Q1’ to earth
Q2 break test (Relay fully de-energises, front contacts break)

Capacitor in section (Note value of capacitor) (O/P of capacitor to earth (Track volts)
TR-GR test (If= any) (Break R1 or R3 on GR, TR de- energises)
Top TDB link to earth
Opposition (V1+V2=V3) (Both ends)

1ohm shunt (Extremities and middle) (Observe TR fully de-energises and front contacts break) (stopped if missed)

Gauging

Reinstate position detector and gauge (If applicable)
Gauge trainstop(s) (If applicable)
Gauge Tripcock Tester (if applicable)
Check all signals can clear

Finishing off

Site tidy
Give up protection
Inform Signaller/TO/SOM that work has been completed
Clear AWC with Fault Report Centre
Control movement of trains until track proved to shunt
Sign out with CSS