fatigue & safety in mining –a distraction? roger kahler intersafe
TRANSCRIPT
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Fatigue & Safety in Mining –A Distraction?
Roger Kahler
InterSafe
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Fatigue
Impairment of mental and physical function
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Hypothesis
Effective Fatigue Management will not significantly alter on-site personal
damage – fatal and non-fatal
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Frameworks of Thinking
1. Damage Classification
2. Pareto Principle (principle of Critical Few)
3. Energy Damages
4. Patterns of Damage
5. Appropriate Models
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Damage Classification & Pareto Principle (80/20 Rule)
i. Permanent• Fatal• Non Fatal
ii. Temporary
iii. Minor
Framework 1 and 2
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Numbers of People Involved in Non-Fatal Permanent Damage
Australia (All Industries)
175 / Day
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Permanent Incapacity - Mining
Year Qld Mining NSW Mining2005-2006 - 1342006-2007 3 1682007-2008 7 2042008-2009 39 62
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Likelihood (Chance) of Permanent Damage (NSW Mining)
2007-2008 1 : 98 employee years2008-2009 1 : 322 employee years
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Energy Damages
1. Stable
2. Metastable
3. Unstable
4. Damage
5. Recovery / Repair
6. Stable
Framework 3
Damaging Energy
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Pareto Damaging Energies – Fatal and Non-Fatal Permanent
Vehicular Gravitational Human
Framework 4
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Appropriate Models
Egocentric
Ergonomic
Framework 5
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Appropriate Models
Egocentric Safe acts and conditions Unsafe acts and conditions
Ergonomic Did/did not Present/Absent
Framework 5
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Observations of an Incident
Essential
Contributory
Non Essential
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Human Energy – Over-exertion
Solve by which strategy -
Training in lift technique?
Fatigue management?
Task Ergonomics?
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Gravitational Energy – Fall to Same Level
Solve by which strategy -
Watch where you’re walking?
Fatigue Management?
Underfoot surface conditions?
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Vehicular Energy – Jolt/Jar/Vibration
Solve by which strategy - Watch where you’re driving?
Fatigue Management?
Road conditions (short term)?
Equipment design (longer term)?
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Gravitational Energy – Descend Mobile & Fixed Plant
Solve by which strategy -
Training in 3 points of contact?
Fatigue Management?
“Ergonomic” Designs?
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Vehicular Energy – Fatal – Over Embankment / Edge
Solve by which strategy - Be Careful?
Fatigue Management?
Some combination of Bunds, Berms, Seatbelts, ROPS, Lighting, Drainage etc.
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Proposition
Effective Fatigue Management will not significantly alter ‘on site’ personal damage (fatal, non-fatal)
Proposition - TRUE
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Summary of Relative Risk
0.08 BAC
Driving using mobile phone
16km/hr faster than other traffic
100km/h
24 Hrs without sleep
20km/hr faster than other traffic
0.05 BAC
17 Hrs without Sleep
8-10km/hrFaster thanOther traffic
x2
x4
x6
Relative Speed (km/h)-10 -5 0 5 10 15 20 25
7
6
5
4
3
2
1
0
Re
lati
ve
Ris
k
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Peak Downs Highway(Gregory Development Road – Hazledean)
Serious Casualties as a result of 41 crashes – 2004-2008
• 5 Fatalities
•47 Hospitalisations
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Age Groups• Over 24 - 73%• Under 24 - 25%
Males & Single Vehicle accidents over-represented
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Time of Day
• Midnight – 6am - 9.6%
• 6am – Noon - 26.9%
• Noon – 6pm - 48%
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• Head On - 17.3%
• Off Carriageway - 36.5%
• Other - 46.1%
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Fatigue – 38%
Driver – fatigue related by definition(2pm – 4pm) (10pm – 6am)
21%
Driver – fatigue – fell asleep
17.3%
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Closing Comment
• Fatigue and Health
• Fatigue and Off-Site Road Incidents (Fatal & Hospital)
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THANK YOU
THE END