Fnirsi GC-01 User Manual page 9

6. Conversion of radioactive units
①International Standards (1990)
Radioactive staff: 20mSv/year (10μSv/hour)
General public: 1mSv/year (0.52μSv/hour)
②Unit conversion
1μSv/h=100μR/h 1nc/kg.h=4μR/h
1μR=1γ(The unit used for prospecting in the pronuclear industry)
Radioactivity:
1Ci=1000mCi
1mCi=1000μci
1Ci=3.7×1010Bq =37GBq
1mCi=3.7×107Bq =37MBq
1μCi=3.7×104Bq=37KBq
1Bq=2.703×10-11Ci=27.03pci
Metering equivalent:
1Sv=103mSv=106μSv
1Sv=100rem 100μrem=1μSv
Other:
1Sv is equivalent to 1Gy 1g radium=0.97Ci≈1Ci
Exposure:
1R=103mR=106μR
1R=2.58×10-4c/kg
Absorption metering:
1Gy=103mGy=106μGy
1Gy=100rad 100μrad=1μGy
Radon unit:
1Bq/L=0.27em=0.27×10-10Ci/L
07