Measuring Radiation and Equipment - West Virginia Division of ...

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Detection Ranges for Common SurveyMeters and ProbesGamma Exposure Rate 1µR/hr 10µR/hr 100µR/hr 1mR/hr 10mR/hr 100mR/hr 1R/hr 10R/hr 100R/hr 1kR/hrLudlum 44-2(Scintillator) 1µR/hr 25mR/hrLudlum 44-38(GM) "Hot Dog" 250µR/hr 500mR/hrLudlum 133-8(GM) "Peanut" 150mR/hr 1kR/hrCanberra UltraRadiac(GM) 1µr/hr 500R/hrLudlum 9-3(Ion Chamber) 200µR/hr 50R/hrLudlum 14C(Internal GM) 100mR/hr 2R/hrContamination 0cpm 10cpm 100cpm 1kcpm 10kcpm 100kcpm 1McpmLudlum 44-9(GM) "Pancake" 0cpm 999kcpmGamma Exposure 1µR 10µR 100µR 1mR 10mR 100mR 1R 10R 100R 1kRCanberra UltraRadiac(GM) 1µR 1kR
DosimetersDirect-Read Dosimeters – Canbe read in field. Variousranges and fragile todroppingElectronic Personal Dosimeters- Can be read in field and setup to alarm at certainreading or dose rate Indirect-Read Dosimeters –Track long term exposure andmust be read in lab. Anexample is thermoluminescentdosimeter
Page 1 and 2: MEASURING RADIATIONAND EQUIPMENTWV
Page 3 and 4: Radioactivity Measurements Measure
Page 5 and 6: Absorbed Dose Measurements Measure
Page 7 and 8: CDV-700 Survey Meter Commonly used,
Page 9: Survey Meter ProbesLudlum 44-38 “

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