PTS PTS - Personal Track Safety Working Near Electrified Lines 3

Question 1

When working near a 25kV overhead electrified line, what is the minimum safe approach distance for an uninsulated person or tool?

Accepted Answer

6 feet

Answer

The standard safe approach distance for uninsulated workers near 25kV overhead lines is 6 feet (approximately 2 meters).

Question 2

What should a worker do if they discover that the electrified line voltage is higher than they were briefed on before starting work?

Accepted Answer

Stop work immediately and notify the supervisor

Answer

Any discrepancy in line voltage from the briefing requires an immediate work stoppage and supervisor notification before proceeding.

Question 3

Which type of equipment requires a greater exclusion zone when working near electrified lines compared to a hand tool?

Accepted Answer

A crane or elevated work platform

Answer

Cranes and elevated work platforms have large reach envelopes and must maintain greater exclusion zones to prevent accidental contact with overhead lines.

Question 4

What is 'induction' in the context of electrified railway lines?

Accepted Answer

An electrical hazard caused by proximity to live conductors even without direct contact

Answer

Induction is an electromagnetic phenomenon where a nearby live conductor can induce dangerous voltage in adjacent conductors or metallic objects.

Question 5

After a track circuit has been de-energized for maintenance, who is authorized to verify it is safe to touch?

Accepted Answer

A qualified electrical worker using a voltage tester

Answer

Only a qualified electrical worker with a calibrated voltage tester can confirm a circuit is de-energized and safe to touch.

PTS - Personal Track Safety Practice Test

PTS - Personal Track Safety Practice Test

PTS PTS - Personal Track Safety Working Near Electrified Lines 3