A Guide to Radio Frequency Hazards with Electric Detonators

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1、AGuidetoRadioFrequencyHazardswithElectricDetonatorsJ.HughStrong,JamesH.Turner,andMichaelW.WorthamSydneyCherylSuttonEditorN.C.DepartmentofLaborDivisionofOccupationalSafetyandHealth4W.EdentonSt.Raleigh,NC27601-1092CherieK.BerryCommissionerofLaborN.C.Depar

2、tmentofLaborOccupationalSafetyandHealthProgramCherieK.BerryCommissionerofLaborOSHAStatePlanDesigneeAcknowledgmentsAGuidetoRadioFrequencyHazardswithElectricDetonatorswaspreparedfortheNorthCarolinaDepartmentofLaborbytheMineandQuarryBureauoftheNorthCarolin

3、aDepartmentofLabor.TheMineandQuarryBureaugratefullyacknowledgesthecooperationoftheInstituteofMakersofExplosives(IME),Washington,D.C.,inthepreparationofthisguide.Allofthetablesinpart2ofthisguideweretakenfromIMESafetyLibraryPublicationNo.20.Toobtainadditi

4、onalcopiesofthisbook,orifyouhavequestionsaboutN.C.occupationalsafetyandhealthstandardsorrules,pleasecontact:N.C.DepartmentofLaborBureauofEducation,TrainingandTechnicalAssistance4W.EdentonSt.Raleigh,NC27601-1092Phone:(919)807-2875or1-800-NC-LABOR________

5、____________Additionalsourcesofinformationarelistedontheinsidebackcoverofthisbook.____________________TheprojectedcostoftheOSHNCprogramforfederalfiscalyear2002–2003is$13,130,589.Federalfundingprovidesapproximately37percent($4,920,000)ofthistotal.Printed3

6、/98,2MContentsPartPageForeword......................................1iivIntroduction...................................1ivi1ElectricDetonatorsandHazardsPosedbyRadioFrequencyEnergy...............1ii1InitiationofElectricDetonatorsbyRadioFrequencyEnergy...

7、.........1ii1RadioFrequencyEnergySources.......1ii2RadioFrequencyPickupCircuits........1ii8GeneralPrecautionsagainstRFEnergySources...........................ii12TransportationofElectricDetonators...ii13CitizensBandTransmittersandCellularTelephones.....

8、.................ii142TablesofDistances—RFSourcesandElectricDetonators.........................ii15I.RecommendedDistancesforCommercialAMBroadcastTransmitters.........ii15II.RecommendedDistancesforTransmittersupto50MHz..........ii