Health and Safety CONFERENCE

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Blind Intersection Warning LED Indication

Rod Lansdowne
Outbye Electrical Coordinator

The Problem

A recent incident report identified a “Near Miss” at an underpass intersection between the 2nd main travel routes of the mine, involving a loader and a man transporter. Safety meetings with crews identified that with the LED strip lighting underground, it made it difficult to identify vehicles entering the main headings from blind corners, and suggestions were made to remove strip lighting from around the underpass intersections to allow identification of vehicles at the intersection (via headlights on the vehicles).

The Solution

After further consultation, it was decided not to remove the current lighting from the intersection but to find a solution that would work within all the current controls under the Mine Transport Rules. Work was already being trialled on using coloured LED indication for belt monitoring purposes, and testing began on using the same string of LED to use an amber light to give an indication of movement from around the blind corner. An ultrasonic system was chosen, as a way of removing human behaviour, and testing to confirm functionality, so that either vehicle or pedestrian would activate the warning lights. A trial was put in place at 30ct underpass to test overall functionality and allow feedback from the workforce as to what changes were required prior to implementing through out the mine.

Benefits/Effects

By adding an autonomous warning system, it gives a visual warning to vehicles/pedestrians in the travel roads of movement around the blind corner. Being autonomous, there is no reliance on people’s behaviours or attitude.

Transferability

Already looking at using the same system to change existing block lights on site to ultrasonic, replacing existing drift lighting with the same LED strips, use of LED strips to indicate gas levels at TG machine doors.

Innovation

Combined current technologies to achieve working system.
Approximate Cost – $2600 for single control box and lighting