CLC/TR 50426:2004

Assessment of inadvertent initiation of bridge wire electro-explosive devices by radio-frequency radiation - Guide

This standard provides guidance in assessing the potential ignition hazard from the inadvertent extraction of energy from electromagnetic fields, propagated from communication, radar or other transmitting aerials to plant where a potentially flammable atmosphere may be present. The standard is not concerned with similar hazards arising from electromagnetic fields generated by other means, such as electric storms, electricity generating installations or other radiating electrical equipment, nor is it concerned with any hazard arising within telecommunications or oter electronic equipment

Leitfaden zur Verhinderung des unbeabsichtigten Auslösens einer Zündeinrichtung mit Brückendraht durch hochfrequente Strahlung

Evaluation de la création par inadvertance de dispositifs électro-explosifs par pont métallique, par rayonnement de radiofréquence - Guide

Ugotavljanje nenamernega radiofrekvenčnega proženja elektroeksplozivnih naprav - Vodilo

General Information

• Status: Published
• Publication Date: 13-Dec-2004
• ICS: 13.230 - Explosion protection
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• ICS: 33.060.20 - Receiving and transmitting equipment
• Technical Committee: CLC/TC 31 - Electrical apparatus for explosive atmospheres - General requirements
• Drafting Committee: IEC/TC 31 - Electrical apparatus for potentially explosive atmospheres
• Parallel Committee: IEC/TC 31 - Electrical apparatus for potentially explosive atmospheres
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 14-Dec-2004
• Completion Date: 14-Dec-2004
• Ref Project: SIST-TP CLC/TR 50426:2005 - Assessment of inadvertent initiation of bridge wire electro-explosive devices by radio-frequency radiation - Guide

Standards Content (Sample)

SLOVENSKI SIST-TP CLC/TR 50426:2005

STANDARD
april 2005
Ugotavljanje nenamernega radiofrekvenčnega proženja elektroeksplozivnih
naprav - Vodilo
Assessment of inadvertent initiation of bridge wire electro-explosive devices by
radio-frequency radiation – Guide
ICS 13.230; 29.260.20 Referenčna številka
SIST-TP CLC/TR 50426:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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TECHNICAL REPORT CLC/TR 50426
RAPPORT TECHNIQUE
TECHNISCHER BERICHT December 2004

ICS 13.230; 29.260.20; 33.060.20


English version


Assessment of inadvertent initiation of bridge wire
electro-explosive devices by radio-frequency radiation –
Guide



Evaluation de la création  Leitfaden zur Verhinderung
par inadvertance de dispositifs des unbeabsichtigten Auslösens
électro-explosifs par pont métallique, einer Zündeinrichtung mit Brückendraht
par rayonnement de radiofréquence – durch hochfrequente Strahlung
Guide






This Technical Report was approved by CENELEC on 2004-08-28.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia,
Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. CLC/TR 50426:2004 E

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CLC/TR 50426:2004 – 2 –
Foreword
This Technical Report was prepared by the Technical Committee CENELEC TC 31, Electrical apparatus for
explosive atmospheres - General requirements.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
CLC/TR 50426 on 2004-08-28.
___________

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– 3 – CLC/TR 50426:2004
Contents
Introduction. 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations. 8
4.1 Modulation codes . 8
4.2 Polarization codes . 9
5 General considerations . 9
5.1 Radio-frequency hazard . 9
5.2 Philosophy of the systematic method of approach . 10
5.3 Responsibility for making the hazard assessment. 10
5.4 Recommended practices for radio silence in offshore operations. 11
6 Transmitters and transmitter output parameters. 11
6.1 Types of transmitters. 11
6.2 Frequency range . 11
6.3 Transmitter output power. 12
6.4 Antenna gain . 12
6.5 Modulation factors . 12
6.5.1 General . 12
6.5.2 Frequency modulation (FM) . 12
6.5.3 Amplitude modulation (AM). 12
6.5.4 Single sideband (SSB) operation .
...