Safe Introduction of Electronic Detonators
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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


Institute of Makers of Explosives (I.M.E.)


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


Basic Application Concepts


  • 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


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