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8/12/2019 Shotfiring Presentation
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Shotfiring update
What makes you think it wont blow up in your
face?
Mines Inspectorate,
Drayton & Graham
Terrey
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Welcome
Introductions
Safety for today Mobile phones
Program for today Objectives
Timing Morning tea
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We all know coal
mine shotfiring
can be tricky
(Insert coal fireball clip
But were here today following a specific incident that happened not too far from here)
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Drayton Coal Mine 13km
south of Muswellbrook Off Thomas
Mitchell Drive west off the New England
Highway Adjacent to Mt
Arthur
NNW of Bayswater
WNW of Lake Lidell
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One dragline, excavators,
sizeable truck fleet
Drills and
shot
crews
+150 shots a
year Tight controls
on shots
Extension approved to
south
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Commenced 1983, approx 13km south of Muswellbrook Currently produces around 5Mt thermal coal for export and
domestic use Approx 300 employees
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The Drayton Incident What would you do if
You turned up to finish loading a shot from the previous day and found the emulsion had fizzed up out of the blasthole,
and Stemming had been ejected Some signal tube had been ejected and showed signs of
having been heated Appeared to have finished reacting, and You knew it wasnt a hot hole, and the ground was not
reactive
There was
some
condensation
on
the
drill
cuttings The hole collar felt hot
Does your Explosive Management Plan tell you what to do?
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A nice July morning
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The dragline operator reported a puff of smoke earlier
What the?
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The EMP was being implemented Problem detected in pre start inspection The area secured
Unauthorised personnel kept away Manager called, together with D&B Supt
Managers decision
to
take
further
action He was consulting with experienced and responsible
personnel
Cause being considered prior to photographing and leaving to consider action
Detonation occurred without warning
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Consequences (after Emergency Response
Plan initiated
&
run
well)
Three injured taken by helicopter to Newcastle
hospital, one to local hospital and one remained on site with paramedic assessment
Notifications Rest of shot fired later that day
all back at work
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Follow up action All blastholes
treated as potentially hot, requiring
extra shot crew members for testing
Reexamination
of
the
nature
of
premature
detonations & Independent investigation
Review of Code of Practice for Elevated
Temperature and Reactive Ground, involving Orica Questioning the standard
testing requirements
This had not shown a problem in the past no ground
had been considered reactive, including the seam intersected by the blasthole
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The ground had not been considered
reactive before and it had looked like any reaction had
finished on the morning of Friday 23 July 10 The blasthole
had been drilled 12 days prior to
loading Blastholes
were checked prior to loading two
adjacent blastholes were
venting
and
temperature checks showed temps of 29 0C no sign of venting in the blasthole
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Blasthole
loaded
Fortan 12 Energan
(uninhibited ANFO and
emulsion) Primed with two Pentax PPP primers and two
Excel non electric (signal tube or Nonel) detonators
Blasthole closest to free face
Later found to be in broken ground During the investigation the blasthole
showed a temperature of 80 0C
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18Emulsion can burn before it detonates
18
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New processes implemented
All blastholes
require temperature checks
Review by geologists of seam data for reactivity risk potential, and advice to D&B Engineer
Daily drill & blast board
coordination involving D&B Engineer (more later)
Flowchart of Code procedure for elevated
temperature &/or reactive ground enlarged, printed off and displayed in the Shotfirers
and D&B
Supervisors
room
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Overarching Flowchart
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If this happens do x But if the other
thing happens do y
Flowcharts help decisions
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Determining risk of
reactivity at existing site
Reactivity detected do
this, or Reactivity incident, do
the right column
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Determining risk of
reactivity at greenfields site
Slightly different
approach
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Existing sites
From the Code Reactive ground
actions, but What does reactive
ground
mean?
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EMP reviewed Reviewed by site personnel
Explosives Management Plan Procedures Rules
Guidance Reviewed, independent with prior site experience
Paperwork verified with individuals Involving a group session with site personnel
Easy to add to what already exists
(still progressing,
more
later)
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Code of Practice for Elevated
Temperature and Reactive
Ground
Presentation byORICA
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Explosives Management Plan
Systematic management of the risks
associated with
the
use
of
explosives
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CMH&S Act s23 in part
(3) A health and safety management system must
include:(a) system elements (which must include, but are not
limited to, health and safety policy, risk management, training and competence, information control and system evaluation), and
(b) any
major
hazard
management
plans
required
for
the coal operation under Subdivision 2, and
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Explosives (Major Hazard) Management
Plan Is part of the sites health & safety management system Demonstrates the duty of care, following due diligence,
for a major hazard Required by mine safety legislation, as well as general
OHS legislation Mandated by AS2187.2 Use of explosives, Appendix A Takes account of relevant standards, codes and
guidance material Features:
Aim, plan, implementation, monitoring & improvement Supported by procedures, rules and guidance
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EMP structure Aim
Policy, scope, definitions, references Plan
Consultation, risk
assessment,
procedures,
forms,
responsibilities, training, records
Implementation General procedures, supervision, magazines, transport,
emergencies, special procedures Monitoring
Stock control & security, blast monitoring and performance data, reviews & audits
Improvement Improvement decision making
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Shotfirers responsibilities
Disciplined practice for those with the
lives of
others
in
their
hands
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Shotfirers Must be licensed under Explosives legislation and
listed in site register
statutory tickets Have responsibilities under the sites Explosives
Management Plan for Reviewing blast designs and implementing risk
management for on/off site impacts Shot crews and any others in the area Checking types and quantities of explosives used, stored
& handled
Magazines, transport and related accessories/ equipment Site preparation, priming, charging, stemming, connecting, firing and dealing with misfires
Disposal of unwanted explosives
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Shotfirers Have the Mine Managers authority for explosives
use Are on the ground and are part of the operation
team Supervise shot crews and maintain consistency & control Fire the shot
So they call practices and any changes to the shot plan After checking with their Supervisor Ideally after checking with the D&B Engineer
Notifying Supervisors about any consequences out of the norm
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36
Shotfirers
beware geology!
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37It is often easy to miss geology
37
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Whats different about this blasthole?
38
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Geology & face conditions
39
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Nice morning tea?
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D&B Engineers qualifications
Supporting
the Shotfirer
does the D&B Engineer tell the
Shotfirer
what to do?
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Drill & Blast Engineers
Are responsible for
Blast planning & coordination Compiling relevant information eg
geological
information
Blast plans that comply with airblast
and ground vibration limits, and which prevent flyrock, while
managing throw
&
fragmentation
Investigations and reports Monitoring and improving the EMP
Coal Mine Health and Safety
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Coal Mine Health and Safety Regulation 2006
37
Contents of major hazard management plan: explosives management plan
For the purposes of section 36 of the Act, a major hazard management
plan in relation to a major hazard comprising hazards arising from the handling of explosives must make provision for the following matters:
(b)the person who designs or initiates a shot must ensure that fly rock does not present a risk to people (whether at the coal operation
or
not),
(c)
the use of explosives only by people who are licensed (d) keeping [of] a [licence] register (e) Cooperation between the operator and any [licensed] personto
ensure safety
of
storage,
handling,
transportation
and
use
of
explosives
44
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Drill & Blast Engineers Have the sites GMs authority for blast planning
and operational coordination
Must access data and information eg geology that is not easy for a Shotfirer
to get Are often (?) unable to get out on the shot So they must be readily contactable Must be given good feedback about shots
Any variations
or
unusual
conditions Any unexpected impacts or results
Fine tuning of powder factors and blast patterns
Must think like a blasthole
D d ill & bl b d
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Draytons drill & blast board
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What is a misfire?
Did the shot do something other than going to plan?
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Misfires must be reportedCoal Mine Health and Safety Regulation 200656
Notification of certain incidents at or in relation to
coal operations: section 110 (1) (c) of the Act
(n) an uncontrolled
explosion
or
fire
or
a misfire
of
explosives
(including shot fails to fire, misfire detected in post blast inspection, or misfire detected while excavating muckpile)
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Renewing your UHL and BEULPresentation by WorkCover
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Explosives Licenses D.I.I. Muswellbrook Singleton
Explosive Licenses Update Dave Barker Bill Brooks
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UHL Letter Expiry Notification Template
Frequently Asked Questions
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Why do I need to lodge a new application and not a renewal?The Explosives Regulation 2005 deliberately omits a renewal process to ensurerigour in the licensing scheme and the capture of all relevant currentinformation. Consequently all existing Unsupervised Handling Licence (UHL)holders and Explosives Licence holders must lodge a new application.
Am I able to continue to operate after my licence has expired if I have
lodged an application?The Regulation does not provide for a continuance of operation beyond theexpiry date of the licence. The licence holder must cease all operations until asubsequent licence is issued and received. To reduce the possibility of you
being unable to operate, WorkCover is sending out Licenser application packs3 months prior to your Licenses expiry date. This ensures enough time is givento allow other State and Federal authorities to process security checks.Will my new licence have the same licence number as my previous
licence?Yes, your licence will retain its existing licence number.Why do I need to apply for an Unsupervised Handling Licence again?The UHL is a prerequisite for all explosives licenses, with the exception of a
Single Use Fireworks Licence. The licence confirms that the individual haspassed a national probity assessment undertaken by NSW and Commonwealthpolice and security agencies.
Frequently Asked Questions
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Why do I need to go through a new security clearance?The National Probity Assessment results, for the purposes of holding acurrent New South Wales licence, are only valid for a period of five years.Federal law enforcement and security agencies require lodgment of a newNational Probity Assessment request in order to provide current informationto support the issuance of licenses under the Regulation.
What is Australia Post Bank@Post?Bank@Post is available at Australia Post outlets displaying the
Bank@Post logo. You can locate your nearest Australia Post Bank@Postoutlet at http://apps.nowwhere.com.au/austpost/PostOfficeLocator/
Do I have to provide all the same information again?
In most cases not all information that was required for your first applicationwill need to be provided again. The covering letter included in this packageexplains in detail the information that will not need to be provided a secondtime.
Please call the WorkCover Assistance Service on 13 10 50 if you have anyfurther questions.
BEUL Letter Template
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BEULLetter Template
Current BEUL& UHL
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Current BEUL & UHL
combined
front
Current BEUL& UHL
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Current BEUL & UHL
combined
back
Proposed Artwork Front UHL
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1. Change of artwork title from Explosives Licence to Unsupervised Handling Licence
2. JPEG image of licence holder to be placed where the WorkCover NSW symbol waspreviously
3. WorkCover NSW symbol relocated to the top left hand corner of the card
4. Description changed from Unsupervised Handling Licence to Security cleared to handleexplosives and SSDS under a valid licence
5. Description field moved to the right to align with the licence and card number fields
Proposed Artwork Front UHL
Explosives Update
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Explosives
Update
If no changes required
Proposed Artwork Back UHL
signature strip
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USEFUL CONTACTS
13 10 504321 5499
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Hunter Valley Explosives Ute Incident 2003
Graham Cowan
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Wrap up
Updated information following an incident
Covered some topical issues Encouraged questions and answers Encouraging later follow through Any last minute questions?
No accidents to anyone ever Orica