Pular para o conteúdo principal
Entre em contato conosco
Return to case studies

Hunter Valley Coal Mine – Caterpillar 789 C

Sound attenuation solution to reduce Caterpillar 789 C dump truck noise.

The Caterpillar 789 C Dump Truck is engineered for performance, designed for comfort, and built to last. Developed specifically for high production mining and hauling applications, the 789 C keeps material moving at high volumes at a lower cost per ton.

Industry – Mineração
Mine type – Open-cut
Mineral – Coal
Location – Hunter Valley, New South Wales, Australia
Product/Scope – Sound attenuation on Caterpillar 789 C haul truck

Brief

Minetek's client needed to significantly decrease the sound output of their Caterpillar 789 C to meet environmental regulations and prevent the delays and stoppages that were leading to significant loss of production and profits.

Challenge

Minetek was commissioned to design and manufacture a Sound Attenuation Package for the Caterpillar 789 C Dump Truck that would allow our client to operate the machine in accordance with the stringent noise regulations onsite.

Solution

With Minetek's Sound Attenuation Package installed, our client could continue the operation of the Caterpillar 789 C during noise-sensitive times and within noise-sensitive areas. Minetek is internationally recognised among OEMs and mining operators as enabling the world’s quietest mining machinery through our Sound Attenuation Packages. Our Sound Attenuation solutions are engineered to maintain productivity and minimise the impact on operators and maintenance teams. Minetek’s modular sound suppression kits are available for mining trucks, excavators, dozers, loaders and drills, with certified installation teams available globally.

Pre attenuation

123 dBA

Minetek tested the sound output of the Caterpillar 789 C before attenuating this machine. This registered a sound frequency level of 123 dBA.

Post attenuation

112 dBA

The sound output of the Caterpillar 789 C was tested after installing Minetek’s turn-key sound attention package. This registered a sound frequency level of 112 dBA.

Sound reduction

11 dBA

Minetek was able to reduce the sound output on the Caterpillar 789 C dump truck by 11 dBA.

This machine can now operate

1000m closer to the boundary/sound receiver

Sound power level attenuation over distances assuming: Hemispherical radiation (Q = 2) Ideal weather conditions (no temperature inversion later, wind fog, etc)