RECOMMENDED PRACTICE FOR DETERMINING SAFE DISTANCES FROM RADIO FREQUENCY TRANSMITTING ANTENNAS WHEN USING ELECTRIC BLASTING CAPS DURING EXPLOSIVE OPERATIONS
Institute of Electrical & Electronics Engineers
1. Overview
1.1 Scope
1.2 Responsibility for safety
1.3 Background
2. References
3. Definitions
4. General
4.1 Hazard zones
4.2 Contributing factors
4.3 Hazard level
4.4 Measurements
4.5 Theoretical determination of the hazard
4.6 Practical evaluation of the hazard
5. Safety precautions when using blasting caps
5.1 General
6. Practical hazards identification and elimination
6.1 Hazard origin
6.2 Hazard levels
6.3 Assessment of hazard levels
6.4 Potential sources of radiofrequency energy
6.5 Safety in transit
6.6 Safe distance assumptions
6.7 Safe distances (tables of recommended distances)
6.8 Unsafe distances
6.9 Basic area hazard assessment
6.10 Alternate method of blasting
7. Radiated electromagnetic fields
7.1 Nature of the radiation field
7.2 Hazard from multiple frequency superposed fields
8. Extraction of energy from the radiated field
8.1 General
8.2 Antenna characteristics of electric blasting wiring
8.3 The horizontal dipole model
8.4 The vertical loop model
8.5 Frequency for maximum pickup of wideband
transmissions
Annex A (informative) Bibliography
Provides an analysis of electromagnetic radiation phenomena that could present a potential hazard to the transportation, handling, or use of electric blasting caps or detonators by commercial or military personnel. Discusses the transfer of electromagnetic energy from a radiation source to the receiving antenna formed by electric blasting cap wires or circuit wiring, techniques for determining whether an electromagnetic radiation hazard is likely to exist, and operating procedures that can be used to minimize the possibility of accidental initiation.
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
