Ch. 6 Part II: Regulatory Limits Flashcards
ICRU & what they do?
The International Commission on Radiological Units and Measurements (ICRU) advises on scientific issues including measurement units in radiology (e.g., Kerma).
UNSCEAR & what they do?
The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) scientifically evaluates radiation risks.
NAS & BIER – what do they both do?
The National Academy of Sciences (NAS) Committee on Biological Effects of Ionizing Radiation (BEIR) estimates radiation risks applicable to the United States.
ICRP & what they do?
The International Commission on Radiological Protection (ICRP) provides recommendations for radiation workers, patients, and members of the public.
NCRP & what they do?
National Council on Radiation Protection & measurements (NCRP) advises federal and state regulators on radiation protection.
Foremost in USA.
US states coordinate x-ray protection regulations through annual meetings of the ____.
Conference of Radiation Control Program Directors (CRCPD).
The regulatory (i.e., legal) effective dose limit for radiation workers is ___.
50 mSv/year
ICRP recommends 20 mSv/year & NCRP uses a lifetime effective dose limit of 10 times the individual’s age (mSv).
ICRP = 20 mSv/year.
NRCP = 10x’s age (mSv)
NRC & what they do?
The US federal Nuclear Regulatory Commission (NRC) is responsible for regulating radioactive materials.
Radiation workers are unlikely to receive regular annual effective doses higher than ___.
~5 mSv
EYE LENS dose limit for occupational exposed workers is ___ in the USA.
150 mSv/year in USA
20 mSv/year elsewhere by ICRP
The dose limit to the skin & the extremities of a radiation worker is ___.
500 mSv/year
Tolerates 20 Sv (20 Gy) in a lifetime
US public regulatory dose limit for members of the public is ___.
1 mSv/year
US regulatory dose limit to a fetus of a radiation worker is ___.
0.5 mSv/month
US maximum fetal dose of ___ during pregnancy
5 mSv
