Radiation Safety Memory Matrix
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| Term for radiation in air. | Exposure
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| SI unit for exposure. | Roentgen (R)
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| Alternate unit for exposure. | Coulomb (C)
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| Conversion factor for exposure. | 1R=2.48X10^-4C
per gram of air
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| Term for the amount of energy absorbed by mass. | Absorbed Dose
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| SI unit for absorbed dose. | Gray (Gy)
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| Alternate unit for absorbed dose. | rad
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| Conversion factor for absorbed dose. | 1Gy=100cGy
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| Term for equalizing the energy given by different particles? | Dose Equivalent
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| Alternate unit for dose equivalent. | rem
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| SI unit for dose equivalent. | Sievert (Sv)
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| Conversion factor for dose equivalent. | rem=rad x QF
(quality factor)
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| Term for rate of energy leaving over time. | Activity
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| SI unit for activity. | Curie (Ci)
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| Alternate unit for activity. | Becquerel (Bq)
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| Conversion factor for activity. | 1 Ci=
3.7x10^10Bq
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| Annual occupational exposure limit for dose equivalent limits for nonstochastic? Lens of the eye? | 150 mSv 15 rem
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| Annual occupational exposure limit for effective dose limit stochastic effects. | 50 mSv 5 rem
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| Annual occupational exposure limit for dose equivalent limits for tissues and organs nonstochastic effects. All others, gonads, red bone marrow, breast, lungs, extremities, skin. SI and alternate units. | 500 mSv 50 rem
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| Annual occupational exposure limits for guidance cumulative exposure; workers? | 10 mSv x age
1 rem x age
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| Conversion factor for occupational exposure? | 1mSv = 0.1rem
1 rem = 10 mSv
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| Public annual exposure limit for effective dose equivalent, continuous, or frequent exposure. | 1 mSv
0.1 rem
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| Public annual exposure limit for effective dose equivalent, infrequent exposure. | 5 mSv
0.5 rem
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| Public annual exposure limit for remedial action recommended when effective dose equivalent, exposure to radon and it's decay products. | <0.007 Jhm^-3
>2 WLM
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| Annual public exposure limit for the lens of the eye, skin, and extremities? | 50 mSv
5 rem
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| Annual education and training exposure limit effective dose equivalent limit? | 1mSv
0.1 rem
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| Annual education and training exposure limit dose equivalent limits for lens of the eye, skin, and extremities? | 50 mSv
5 rem
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| Conversion factor for annual radiation exposure for education and training. | 1 mSv=0.1 rem
1 rem=10mSv
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| Embryo fetus exposure limit total dose equivalent limit? | 5 mSv
0.5 rem
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| Embryo fetus exposure limit dose equivalent in a month? | 0.5 mSv
0.05 rem
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| Negligible individual risk level effective dose equivalent per source or practice. | 0.01 mSv
0.001 rem
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