Safe Introduction of Electronic Detonators

1
Safe Introduction of Electronic Detonators
Your host... John Watson The Ensign-Bickford
Company
2
Electronic Detonators...
Planning for their Safe Use

• Introduction
• I.M.E. Activities
• Electronic Detonator/System Concepts
• Challenges and Opportunities

3
Institute of Makers of Explosives (I.M.E.)
4
I.M.E. Electronic Detonators

• Safety Library Publications
• Electronic Detonator Committee
• Activity to Date
• Survey of Manufacturers
• New Additions to SLP 4
• Forums

5
Fundamental Construction Differences
Shock Tube Electric
Shock Tube
Electric
Delay Module
Igniter
Capacitor (Stored Energy)
Delay Elements
Igniter
Base Charge
Base Charge
Electronic Delay
Pyrotechnic Delay
6
Basic Application Concepts
7

• Typically Two Wire
• Electric Tie -in Principles
• Coded Security
• Multiple Delay Periods
• Blast Machine
• Sequential Capability

Factory Programmed (Fixed) Delay Periods
8

• Two Wire or Multi-Wired
• Digital / Coded Security
• One Millisecond Interval Delays
• Several Seconds (Maximum)
• Blast Machine Programming
• Hand-Held Programmers
• Blast Design Software Options

Field Programmed (Variable) Delay Periods
9
Fixed In - Hole Delay Interval Control

• Five Wire Ribbon Wire
• Blast Machine Controllers
• Series Tie In
• Plug In Connectors
• 32 Second In Hole Delay
• Pre Programmed Surface Controllers

10
Field Programmed Passive Programmed

• Two Wire
• Blast Machine, Computer,Scanners
• Network Tie In
• Plug In Connectors
• Bar Code Reader Sequenced/Programmed

11

• Shock Tube Leads
• Energy Transition
• Electronic Delay
• Standard Tie In

Shock Tube Initiated Factory Programmed
17ms
17ms
17ms
12
Challenges / Opportunities

• Added Blast Control
• Education of Blasters
• Understand Dynamics
• Better Blast Control
• Improved Flexibility
• Information
• Improved Economics
• Communication
• Information/Control

• Added Complexity
• Training Requirements
• Environmental Limits
• Temp/Pressure/Shock
• Multiple User Interfaces
• Dumb Intelligence
• System Costs
• Communication
• Equipment

13
Mining / Blasting Opportunity

• Frequency Control / PPV Control
• Large Open Pit Patterns -Casting/Long Delays
• Air Decking
• Multiple Decking - Minimal Delay Intervals
• Drifting - Standard Delays / Dual Delay Units
• Large Stope Blasting
• Smooth Wall Blasting
• Fragmentation Optimization
• Delay Period Re-Evaluation

14
Safety Library Publication 4 SLP 4 WARNINGS and
INSTRUCTIONS ALWAYS and NEVERS
15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
(No Transcript)
20
Electronic Detonators...
Plan for their Safe Use !
Summary / Comments / QA
21
Thanks to I.M.E. Electronic Detonator
Sub-Committee Mike Barber - Orica USA Ron
Stewart - Orica Canada E.K. Skip Hurley - Dyno
Nobel John Capers - Austin Powder Company Bob
McClure - Daveyfire Inc. Rajeev Singhal - Senex
Explosives, Inc. Mick Lownds - Viking
Explosives Carl Lubbe - St. Lawrence
Explosives Dave Leidel - Halliburton Inc. Lon
Santis - I.M.E. John Watson - The Ensign-Bickford
Company