The Queensland Mines Inspectorate has issued a safety alert after a high pressure emulsion line on a hydraulic longwall pump sled ruptured.
Fortunately, no personnel were working in the area at the time so there were no injuries.
However, the ruptured line damaged a walkway platform that was above the unit as well as an electrical cubicle and the pump cart itself.
The sudden release of energy and high pressure hydraulic fluid caused the walkway to be thrown around three metres.
According to the Inspectorate, the emulsion hoses had rubbed together, compromising the integrity of the outer casing and steel reinforcing braids.
“Poor design was a major contributing factor in the incident, including the hose routing, hose retention and hose segregation,” the Department said.
“No inspection regime was in place for the hoses and other components.
“Segregation of personnel from high pressure hoses needs to be considered in the design process.”
The Inspectorate is recommending mines ensure hose and pipe layouts are designed to eliminate contact and rubbing.
High pressure hoses also need to be securely mounted and regularly inspected for wear and abrasion.
Personnel access in and around high pressure installations needs to be kept to a minimum and segregated where possible.