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1SourceProcess4567891011121314FindingthesourceTheapproximatepositionofthesourcewasfoundthroughgamma-raydetectioninstrumentsatmorning9:00a.m.on10thMay,afterWanghadthrownit3hourslate.Butthepreciseposition’sdeterminationwasdifficult,becausethesourcewastoosmallandtheradiationwastoostrongnearthesource.Finally,ametal-detectorwasusedtofindtheprecisepositionofthesource.1718CalculationMr.Wang’sDoseCalculationOtherPeople’sDoseOtherpeopleworkinginworkshop:9person(3-5mfromsource),Dose:2.5-6.25mSv4person(6mfromsource),Dose:1.74mSv7person(15mfromsource),Dose:0.28mSv20person(20-40mfromsource),AverageDose:0.07mSvTheroadconstructionworkersnearthewarehouse:20person(10-20mfromsource)Dose:0.78~3.125mSvTheworkmaterestedalongwithWanginrestroomAveragerangefromsource:3meters,Dose:13mSvWang’sfamilyandtenant:Dose:25~37.5mSvWang’sparentsandsister:Wang’sFather:0.09mSv;Wang’sMother:1.22mSvWang’sSister:0.22mSvTwotenantslivedinsecondfloorupthesource’sroomDose:5.12-6.4mSv;Theconstructorsneartheplacewherethesourcewasfound11constructors(30-80mfromthesource),MaximumDose:0.42mSvConcludeofthecalculationClinicalManifestation26