What is the definition of sequential tripping?
When consecutive electrical sections along a route trip. Normally caused by a fault on a moving train.
What does ECO stand for?
Electrical Control Operator
What is an “Emergency Switch Off”?
When the ECO switches off the electrical supply to all lines:
How should the OLE be treated?
Live at all Times, unless
What are a drivers actions if you see anything in the OLE that could cause damage if it comes into contact with the pantographs on your train?
What objects and defects must be immediately reported to the Signaller/ ECO?
What is the safe distance from the OLE?
2.75m (9ft)
What types of incident will require an emergency switch off?
What are a drivers actions if ADD (automatic dropping device) has operated on your train?
What are drivers actions if you witness damage to the OLE, and what incidents define damage to the OLE?
Actions:
Damage to the OLE:
What are a drivers actions when the line light goes out ?
more than one pantograph, or only pantograph in use is not on the first 3 vehicles, you must:
- make 1 attempt to reset
If the reset attempt was unsuccessful:
If the line light goes out when can you coast to stand (or to a suitable location)?
If the line light goes out when can the train continue normally?
What are a drivers actions if you are asked by the signaller to examine the OLE of an adjacent line?
Damaged OLE section: If the signaller has asked you to established whether it is safe for trains on the affected line to proceed using the trains own tractive power, or coast under the affected area with pantographs lowered, what must be checked?
If the signaller has asked you to coast (with pantographs lowered) under an obstruction or object on the OLE, what is the maximum speed?
[Note: the signaller will check you down to a red signal at a location which will enable you to get up 20mph,
and will tell you:
What are a drivers actions if you have spoken to the signaller regarding a high speed coasting area, and you are aware of the location of the “lower pantograph” signs?
ORDER OF SIGNS
What is an Overhead Line Permit (Form C)?
A form signed and issued by the nominated person and given to the designated person who is to carry out work on or near the OLE line. It states exactly what is live and what is earthed and where it is safe to conduct work
What type of objects or defects to the OLE should you report to the ECO immediately? (8 items)
(If any of this damage will affect the safe movement of trains you must first report it to the signaller)
What should you do if you discover a loose or malfunctioning APCO balise?
Report it to the signaller
4 areas of a train you must not climb on or above when working on a traction unit in an OLE area/train. And what are the 4 exceptions to this?
Maintenance of trains: What 4 activities must you carry out at authorised locations only?
What is the appropriate way to carry long items in an OLE area?
horizontally at waist level and ensure it does not come within 2.75m of the OLE.
What qualities specific to a ladder do you need to ensure when using a ladder in an OLE area?