CEI CLC/TR 50426 : 2005

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 General considerations
6 Transmitters and transmitter output parameters
7 Circuits for blasting and well perforation
8 Electro-explosive devices
9 Methods of assessment for determining potential RF
   ignition hazards on a site where EED are used
10 Practical on-site testing
11 Safety procedures
12 Special applications
Annex A (informative) - Extraction of energy from the
        electromagnetic field
Annex B (informative) - Measurement of electromagnetic fields
Annex C (informative) -Sources of information and addresses
        of advisory bodies - UK ONLY
Annex D (informative) - Electromagnetic radiated fields and
        examples of radiating antennas and unintended
        receiving antenna characteristics
Annex E (informative) - The effective resistance of the leading
        wires of an EED
Annex F (informative) - Derivation of minimum distances of safe
        approach for Table 2 and Table 3
Annex G (informative) - Ground-wave propagation (vertical
        polarization): calculation of field strength
Annex H (informative) - Worked examples to demonstrate the
        effects of antenna gain
Annex I (informative) - The effects of leading wire resistance,
        safety resistors and the use of EED with different
        characteristics
Annex J (informative) - Derivation of Figure 12a) to Figure 12g)
        for EED alone incorporating the resistance of leading
        wires and safety resistances
Bibliography

Gives guidance on assessing the possibility of inadvertent extraction of energy from an electromagnetic field propagated from radio frequency (RF), radar or other transmitter antennas and the coupling of this energy to an electro-explosive device (EED) in a manner capable of causing initiation.