Shotfiring Presentation

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?

[email protected]

No accidents to anyone ever Orica

Documents

Shotfiring Presentation