Successfully Detected Proximity Tag
1 All continuous miners, bolters and shuttle cars are to be fitted with a proximity detection system to prevent the crushing, jamming or striking of persons within the vicinity of the machine.
2 The machine will stop operation when a person is within one metre of any part the machine.
3 All new continuous miners, bolters and shuttle cars are to be fitted with a proximity detection system by 1 July 2015.
4 All existing continuous miners, bolters and shuttle cars are to be fitted with a proximity detection system at their first overhaul after 1 July 2015 but no later than 1 January 2017.
Should Legislation with the above intent be prepared?
That underground coal mines review arrangements in relation to the
interaction between pedestrians and machinery and, following a
suitable risk assessment process, revise and to the extent necessary,
establish No Go and Restricted Zones to govern the interaction.
Where this occurs, coal mine workers should be trained in them and they
should be enforced. To assist, where appropriate, the No Go and
Restricted Zones should be represented in pictorial form and made
available in crib rooms and other such locations to act as a reminder for
coal mine workers. Ultimately, operators of mobile equipment must
ensure that it is safe to move equipment before they do so.
NO GO ZONES
That coal mining operations and the
Department (as the approval body) move
quickly with manufacturers and other
appropriate bodies to have developed,
tested and approved proximity detection
devices for use in underground coal mines
to detect the presence of pedestrians in
and around mobile equipment including
Remote Controlled Continuous Mining Machine Fatal Accident Analysis Report Of Victim’s Physical Location With Respect to the Machine Original Report Dated April 26, 2002 Updated April 5, 2013
Prepared By: Chad Huntley, Electrical Engineer
“X” indicates general location of fatality.
EQUIPMENT / PERSONNEL- AWARENESS RELATED FATALITIES
57% Human Error
Prevention by active
Prevention by passive
71% CM & SC
SBI SBI SBI
Date Type of
An employee was fatally injured
when he was crushed between the
rib and the shuttle car.
(Safety Alert SA 161)
6 Objects of Act
The objects of this Act are—
(a) to protect the safety and health of persons at mines and persons who may be affected by operations; and
(b) to require that the risk of injury or illness to any person resulting from operations is at an acceptable level.
26 What is an acceptable level of risk
(1) For risk to a person from operations to be at an acceptable level, the operations must be carried out so that the level of risk from the operations is—
(a) within acceptable limits; and
(b) as low as reasonably achievable.
CURRENT LEGISLATION (QLD)
WHAT IS THE PROXIMITY DETECTION SYSTEM TO DO?
GIVE OPERATOR INFORMATION TO MAKE A DECISION OR
ALLOW SYSTEM TO CONTROL MACHINE
PERSON TO VEHICLE
Warn person of vehicle either stationary or moving within detection range
VEHICLE TO PERSON
Warn vehicle operator of a person in the vehicle detection range
VEHICLE TO VEHICLE
LV to HV
HV to HV
Warn vehicle operator of another moving or stationary vehicle in the detection range
VEHICLE TO FIXED OBJECT
Warn vehicle operator of fixed hazard in the vehicle detection range eg void
DIAGRAMS FROM DRAFT MDG
CAT Zone for a shuttle car
PAT Zone for a shuttle car
PDT Zone for a shuttle car
RFID – tags and readers
GPS – surface only
Combination of the above
Selection of technology(ies) critical for effective control of collision hazards and resultant risks
ZONE VALUES CONFIGURABLE BY MINE - Becker.
Zone Range Proximity
In the Critical Zone
the configured vehicle
will be forced to stop
In the Warning Zone
both parties are
warned of the
Miners are cautioned
to take note and to
stay clear of the
operating vehicles in
their proximity. The
vehicle operator is
notified when a new
tag is detected.
POLAR DIAGRAM OF UNDERGROUND TESTS
FIT OR ASSIST
JOY NO YES YES
CATERPILLAR NO YES YES
SANDVIK NO YES NO
PROXIMITY DETECTION SYSTEMS
TYPICAL SHUTTLE CAR INSTALLATION – InfoTronix CWS
Fully certified IECEx Exi I for use in Qld Coal mines
Generators in XP housing
Silent zone generator
Tracking Display POD
TYPICAL COMPONENTS OF MST/STRATA HazardAvert SYSTEM
Warning and create awareness
0 to 15m
0-100m +/- 8m
0-50m +/- 0.5m (time of flight)
0-10m approx 1m
Long 50m +/-10%
Close 18+/- 1m
Up to 15m
UG MINES QUEENSLAND - STATUS
Number of mines with fitted operating systems
Number of mines trialling any system on the surface
Number of mines to trial any system in UG
Number of mines relying on corporate fix
Number of mines relying on other mines
TYPICAL TEST/INCIDENT SCENARIOS (Peabody NGC)
Antenna/Receiver placement and mounts on machine are critical to reliable detection
Integration of tags in cap lamps can be an issue
Test tags with all technologies in use eg UHF, Radar, magnetic
Tags need to have 3 dimensional antennas the orientation of a tag can have an effect on detection
What are the signal strengths in relation to the initiation of explosives? Have the units been tested?
CSIRO ACARP Project C22012 Project Aim: Introduce an Open Communications Specification for Underground Collision Avoidance Systems to Achieve Product Interoperability. Primary Outcomes Interoperability - of Collision Avoidance and Proximity Detection products with OEM systems Communications Standards – development of protocols required for a device to interact with other devices in a Collision Avoidance System
No silver bullet but collision awareness/avoidance systems will help in creating a higher level of safety
•Proximity detection systems do protect persons.
•In Qld the Inspectorate will continue to support and encourage the fitment of proximity detection systems
•NO GO Zones and associated procedures will continue to be enforced
•Substantial commitment is required to get systems operating effectively.
•Operator acceptance will be critical to success
•Regular testing of the system performance will be a critical operations process.
•Look for the positive injury prevention experiences and share them.
•Legislation to mandate fitment of PD systems is being considered. The principle of a reasonably achievable and acceptable level of risk will be applied.
•End users who have conducted trials of various systems-the Mines Inspectorate applauds you.
FOR A FATAL ACCIDENT THERE IS NO CURE: THERE IS ONLY PREVENTION
Further enquiries can be directed to
Peter Herbert – Senior Inspector of Mines (Electrical)
Acknowledgements: photographs, schematics, brochures, data
Glencore North Goonyella mine Mine Safety Institute
Mine Site Technologies Becker Infotronix
Sandvik Caterpillar CSIRO
Every miner home safe and healthy every day
Commissioner for Mine Safety and Health - Stewart Bell