Danika Casey & Chloe Mo
Corrs Chambers Westgarth
David Chatto – Head of REMSAFE
ABSTRACT
Isolation of machinery is an everyday occurrence on mine sites, and practices have improved considerably over time. This presentation will explore some of the key advances in isolation
practices over many decades.
Up-to-date isolation-related incident data from Queensland will be presented and examined. It will be suggested that improvement has at best plateaued and that a shift is required in our approach to isolation practices – in particular: a focus on higher-order controls.
Human factors will be identified as the leading ongoing cause of isolation-related incidents. Highly effective, currently available treatment options will be discussed. In particular,
autonomous isolation (often called ‘remote isolation’), will be put forward as a key method of driving step-change improvement in this area. Using James Reason’s model of human error (slips,
lapses, mistakes and violations), it will be shown that autonomous isolation is highly effective in treating all forms of human error.
Case studies will be presented to demonstrate the benefits of autonomous isolation and a recent technical advancement will be introduced to demonstrate the continuing evolution of isolation.
Grant Chisnall, CEO and Founder, Left of Boom
Grant Chisnall and Matt Gill
Left of Boom
Russell Churchett & Jacquie Hughes
SSE Co PTY Ltd
Toby Clarke,
Global Road Technology Holdings Pty Ltd
Adrian Clarke
SHE Manager, Anglo American
A proactive safety culture is the desired end state for Anglo American’s Dawson Mine. The journey relies upon the initiation of a strong system to promote embedding the desired safety behaviours within the organisation.
At Dawson Mine, this system is “Recognition and Reward Scheme”. The scheme relies on hazard reporting and innovation drives, aligning with the core values of Safety and Innovation. Hazard reporting and associated rectification is critical to improve safety ownership. Prior to implementation, 60% of hazards were reported by the general workforce. This has now increased to 90%, with a total increase in hazard reporting of 20%. The success of the scheme can be attributed to two main factors; firstly, an easy to use system, responsive to feedback, and secondly an immediate reward implication, with those crews achieving high rates of genuine hazard notification receiving recognition.
The second success of the scheme is the increase in innovation from the workforce. Innovations are submitted to the site’s Safety, Health and Environment Committee with nominees and award recipients celebrated quarterly across the site.
The “Recognition and Reward Scheme” develops a culture of intervention and ‘speaking up’, encouraging employees not to be a bystander but be fully involved in behavioural safety.
Dr Fiona Clarkson – Research Scientist, Simtars
ABSTRACT
Mines routinely monitor the gas profiles in their goafs and roadways to determine the current status of the mine as part of their principle hazard management plan for spontaneous combustion. Many mines typically monitor for hydrogen, oxygen, methane, carbon monoxide, carbon dioxide, ethane and ethylene using micro gas chromatographs.
This paper investigates the existence of other gases which may have the potential to be used to monitor the underground environment for early signs of a heating or developing spontaneous combustion event. Simtars collected goaf and roadway gas samples into Tedlar bags to determine the “normal” background levels of these gases.
The gases analysed for included aliphatic hydrocarbons to C10, Benzene, Toluene, Ethyl Benzene and Xylene (BTEX) and aldehyde compounds. In addition to classical analytical techniques such as Gas Chromatography / Mass Spectroscopy (GC/MS) and High Pressure Liquid Chromatography (HPLC), a new micro gas chromatograph configuration previously developed by Simtars was used to conduct the analysis for aliphatic hydrocarbons to C6 and BTEX.
This paper provides a summary of the extended aliphatic hydrocarbon, BTEX and aldehyde gas profiles found in the longwall goafs and roadways of the surveyed Queensland and New South Wales mines.