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Safe Introduction of Electronic Detonators. Your host... John Watson The Ensign-Bickford Company. Electronic Detonators. Planning for their Safe Use. Introduction I.M.E. Activities Electronic Detonator/System Concepts Challenges and Opportunities.
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Safe Introduction of Electronic Detonators Your host... John Watson The Ensign-Bickford Company
Electronic Detonators... Planning for their Safe Use • Introduction • I.M.E. Activities • Electronic Detonator/System Concepts • Challenges and Opportunities
I.M.E. & Electronic Detonators • Safety Library Publications • Electronic Detonator Committee • Activity to Date • Survey of Manufacturers • New Additions to SLP 4 • Forums
Fundamental Construction Differences Shock Tube Electric Shock Tube Electric Delay Module Igniter Capacitor (Stored Energy) Delay Elements Igniter Base Charge Base Charge Pyrotechnic Delay Electronic Delay
Typically Two Wire • Electric Tie -in Principles • Coded Security • Multiple Delay Periods • Blast Machine • Sequential Capability Factory Programmed (Fixed) Delay Periods
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
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
Field Programmed Passive Programmed • Two Wire • Blast Machine, Computer,Scanners • Network Tie In • Plug In Connectors • Bar Code Reader Sequenced/Programmed
Shock Tube Leads • Energy Transition • Electronic Delay • Standard Tie In Shock Tube Initiated Factory Programmed 17ms 17ms 17ms
Challenges / Opportunities • Added Complexity • Training Requirements • Environmental Limits • Temp/Pressure/Shock • Multiple User Interfaces • Dumb Intelligence • System Costs • Communication • Equipment • Added Blast Control • Education of Blasters • Understand Dynamics • Better Blast Control • Improved Flexibility • Information • Improved Economics • Communication • Information/Control
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
Safety Library Publication 4 SLP 4 WARNINGS and INSTRUCTIONS “ALWAYS and NEVERS”
Electronic Detonators... Plan for their Safe Use ! Summary / Comments / Q&A
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