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Regulator flags risks after worker bypasses LHD shutdown system

The NSW Resources Regulator has advised mine workers not to bypass critical safety systems after a deliberately crimped shutdown circuit hose was discovered on a load haul dump (LHD) at the start of a shift.

Workers identified the issue at the beginning of service, finding that a safety circuit hose had been intentionally clamped. The hose forms part of the shutdown system designed to stop diesel equipment in unsafe conditions.

According to the regulator, the nightshift operator later admitted to fitting the clamp. The worker said they were concerned the cement being transported would set if the LHD shut down during operation.

Shutdown systems are considered critical safety controls on diesel engines used in underground coal mines. These systems are designed to automatically stop equipment if certain hazardous conditions occur, reducing the risk of serious incidents underground.

“Workers must not place bypasses or overrides on systems without following the relevant procedure at the mine,” the regulator said.

The incident also prompted a reminder about worker obligations under the Work Health and Safety Act 2011.

Under section 28 of the Act, workers are required to take reasonable care for their own health and safety, and to ensure their actions or omissions do not adversely affect the health and safety of others.

Workers must also comply with reasonable instructions provided by their employer or the person conducting the business or undertaking (PCBU), and cooperate with workplace health and safety policies and procedures.

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