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CAMRT EXAM 2024 with Questions & Complete Solutions| Already Passed
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CAMRT EXAM 2024 with Questions &Complete Solutions| Already Passed
What is an unrestricted area? - ✔general public may
enter Max exposure limit -- less than 0.02mSv/hr
e.g waiting rooms
What areas require the Rayonnement-Danger-Radiation sign? - ✔1) any area in which there
is reasonable probability that a person in the area will be exposed to an effective dose >
25uSv/hr; and/or
2) a room where there is any nuclear substance in a quantity of more than 100 times the EQ
White I - ✔does not exceed 5uSv/hr at any location on the external surface of the package
Yellow II - ✔does not exceed 500uSv/hr at any location on the external surface of the package
TI does not exceed 1
Yellow III - ✔does not exceed 2mSv/hr at any location on the external surface of the package
TI does not exceed 10
Transport Index (TI) - ✔max radiation level in uSv/hr at one meter from the external surface
of the package DIVIDED BY 10
, When to use an ionization survey meter - ✔converts current to radiation units usually as
a dose rate (mR/hr) requires a relatively high exposure rate to give a good reading
Use when monitoring patient or package exposure levels
When to use a GM counter (count rate meter) - ✔Finding contamination
Whole body dose limit for NEW - ✔50mSv/year up to 100mSv over 5 years
Skin or hand dose limit for NEWs - ✔500mSv/y
lens of eye dose limit for NEWs - ✔150 mSv
General public dose limit - ✔1mSv
Pregnancy dose limit - ✔4mSv for balance of pregnancy
calculate percent of original intensity - ✔100%/2^n
where n is the number of HVLs
HVL of Tc99m in Pb - ✔0.25mm
where to store 131I - ✔fume hood in lead
where to store Y90 or Sr89 - ✔pure beta emitters
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