Transcript Dozer_Safety_On_Stockpiles.ppt

Dozer Safety On Stockpiles
Purpose
– To increase the level of understanding around
the risks associated with operating dozers on
stockpiles with discharge feeders, and to
share learning's and controls available to help
minimise these risks.
Outcome
– Increased awareness around the operating
risks
– Share learning's from two recent incidents
– Share some of the available controls to
minimise these risks
Stockpile and Feeder Design
- Stockpile Cross Section
Live Zone
Dead Zone
Conveyor
Discharge Feeders
Stockpile and Feeder Design
- Stockpile Cross Section
Live Area of Feeder Cones
Live Zone
Dead Zone
Conveyor
Discharge Feeders
Principal Operating Risks
and Hazards
• Falling into
feeder
Principal Operating Risks and
Hazards (cont.)
• Domed out or rat holed feeder
Principal Operating Risks
and Hazards (cont.)
• Slumping
Principal Operating Risks and
Hazards (cont.)
• Engulfment
Safety Statistics
Cumulative Incidents
Stockpile Incidents XXX
90
80
70
60
50
40
30
20
10
0
Feeder Incidents
Slumping Incidents
Total Incidents
2000
2001
2002
2003
Year
2004
2005
Dozer Incident – 19th March 2006
• 15:45 :
Operator travels between feeder 7 and 8, Stops
dozer due to limited visibility. After 3 to 5 minutes of being
stopped, dozer falls into feeder cone.
• 15:50 :
Emergency signal received, Dispatch unable to
verify with TRD 326, Supervisor asked to investigate
Dozer Incident – 19th March 2006
(cont.)
• 16:00 :
Supervisor unable to locate Dozer, decision is
made to stop the systems ( trippers and feeders).
• 16:10 :
Mine rescue group informed.
• 16:20 : Excavation commences on Feeder 1
• 18:00 : Upper Portion of Ripper exposed in Feeder 8
Dozer Incident – 19th March 2006
(cont.)
• 20:42 :
The rear window of the bulldozer is cleaned by
rescue teams, who discover by way of signals that the operator
is alive.
• 20:45 :
Operator leaves the cabin of bulldozer 326 walking
unaided.
Dozer Incident – 19th March 2006
(cont.)
•Cabin of dozer where operator was
trapped, it is believed that the air
conditioning fan continued to circulate air
from engine bay through cabin
throughout event
•Operator remained calm throughout
event
•No additional oxygen supplies used,
•Recovered dozer
Learnings From These Events
Comunication/Emergency
system needs to work in all conditions
Operators need to be able
understand the risk in order
control it
Challenge
our
operations
rigorously apply the hierarchy
controls
to
to
to
of
Hierarchy of Controls
•
•
•
•
Eliminate– Dozerless stockpiles
Separate – Remote Control Dozers
Re-design – Stacker/Reclaimer systems, Load out bins
Substitution – Low profile blades to improve visibility,
Establish stockpile trigger points. Eg. >400Kt – Isolate
feeders/trippers before pushing in
• Administration – training to increase awareness, GPS to
locate feeders, Feeder indicating lights
• PPE – Oxygen in cabins, self rescuers, Strengthened glass,
ROPS,
QUESTIONS?