PTS Working Near Electrified Lines 4

Question 1

What does 'OLE' stand for in the context of electrified railway systems?

Accepted Answer

Overhead Line Equipment

Answer

OLE stands for Overhead Line Equipment, referring to the system of wires and supports that deliver electricity to trains via pantographs.

Question 2

A track worker is unsure whether a section of track has been successfully isolated. What should they do?

Accepted Answer

Treat the section as live and obtain confirmed isolation before proceeding

Answer

Unconfirmed isolation means the line must be treated as live — work cannot begin until isolation is formally confirmed by an authorized person.

Question 3

What is the role of earthing (grounding) equipment when working on an isolated section of electrified line?

Accepted Answer

To prevent accidental re-energization from discharging stored or induced voltage safely

Answer

Earthing equipment provides a safe discharge path for any residual, stored, or induced voltage that might appear even after isolation, protecting workers from shock.

Question 4

How does a third-rail electrified system differ from an overhead line system in terms of primary worker hazard proximity?

Accepted Answer

Third-rail hazards are at ground/foot level; overhead hazards are above

Answer

Third-rail systems place the electrified conductor at ground level, creating a tripping or stepping hazard, while overhead systems create hazards above the worker.

Question 5

What is the correct response when a 'loss of protection' occurs — meaning a safe system of work breaks down unexpectedly during live-line-adjacent work?

Accepted Answer

Immediately withdraw all workers to a place of safety and report to the controller

Answer

When protection is lost, all workers must immediately withdraw to safety and notify the controller — work cannot resume until the safe system is re-established.

PTS - Personal Track Safety Practice Test

PTS - Personal Track Safety Practice Test

PTS Working Near Electrified Lines 4