IAEA培训材料-近年放射性事故分析

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1、Module2.10:Accidentupdate–somenewerevents(UK,USA,France)IAEATrainingCourseQuestionsDoyouthinktheaccidentshavenothappenedinrecentyears?Doyouthinkwell-developedcentresareimmunetotheseaccidents?2PreventionofaccidentalexposureinradiotherapyOverviewItshouldbenotedthattheintentiscertainlynottoreflectthe

2、quotedcentresinthispresentationinpoorlightInstead,thepurposeistodrawlessonsInmanycases,thecentreshaveaqualitysysteminplaceTheeventsarereconstructedfrominformationinthepublicdomain,andmightdifferfromactualeventsduetogapsinthisinformation.3PreventionofaccidentalexposureinradiotherapyOverview1stexample

3、:Incorrectmanualparametertransfer(UK)2ndexample:Reversalofimages(USA)3rdexample:Inappropriatemeasuringdevice(France)4thexample:Erroneouscalculationforsoftwedges(France)5thexample:IncorrectIMRTplanning(USA)6thexample:Moreinformationneeded…Newerexamplesofaccidentsinradiotherapyfrom2004to20074Preventio

4、nofaccidentalexposureinradiotherapy1stexample:Incorrectmanualparametertransfer(UK)IAEATrainingCourseBackgroundJanuary2006attheBeatsonOncologyCentre(BOC)inGlasgow,ScotlandAtthetime:RadiotherapyphysicsstaffinglevelsinScotlandlessthan60%oftherecommendedlevel“Glasgowhasproblemswithrecruitingphysicists,a

5、sshownbytheirhighnumberofvacancies.”TheBeatsonOncologyCentreinGlasgow6PreventionofaccidentalexposureinradiotherapyBackgroundTreatmentplanningatBOC:14.5wholetimeequivalent(WTE)staffwereavailableforbetween4500and5000newtreatmentplansperyear.WhenstaffinglevelswerecomparedwithguidelinesfromIPEM,itwassee

6、nthat18WTEstaffwouldbetherecommendedlevel.7PreventionofaccidentalexposureinradiotherapyBackgroundTreatmentplanningatBOC:PlanningstaffmembersandplanningprocedureswerebothcategorizedAtoCdenotesseniortojuniorstaffAtoEdenotessimpletocomplexplansThemaindutiesperstaffcategoryisoutlinedincolumn4Tablefrom:“

7、ReportofaninvestigationbytheInspectorappointedbytheScottishMinistersforTheIonisingRadiation(MedicalExposures)Regulations2000”8PreventionofaccidentalexposureinradiotherapyBackgroundTreatmentplanningatB