Radiation Safety Exam UPDATED Exam
Questions and CORRECT Answers
Terrestrial radiation - CORRECT ANSWER - Natural background radiation that results
from the presence of naturally occurring radioactivity in the soil and earth
Cosmic radiation - CORRECT ANSWER - Natural background radiation that results from
the interaction of particles originating in outer space with the earth's atmosphere
Internal Radioactivity - CORRECT ANSWER - Natural background radiation due to
naturally occurring radionuclides that have been deposited in the human body via either
ingestion or inhalation
300 millirem - CORRECT ANSWER - Average annual effective dose equivalent in the US
(200 millirem attributed to radon gas)
Medical radiation - CORRECT ANSWER - average per capita effective radiation dose
equivalent is approximately 53 millirem per year
Department of Transport - CORRECT ANSWER - DOT
Occupational safety and Health Administration - CORRECT ANSWER - OSHA
Environmental Protection Agency - CORRECT ANSWER - EPA
Nuclear Regulatory Commission - CORRECT ANSWER - NRC
International Commission on Radiological Protection - CORRECT ANSWER - ICRP
, National Council on Radiation Protection and Measurements - CORRECT ANSWER -
NCRP
DOT, OSHA, EPA, NRC, ICRP, NCRP - CORRECT ANSWER - Agencies responsible for
radiation safety and control
5 rems per year - CORRECT ANSWER - Occupational Dose Limit for effective dose
equivalent
15 rems per year - CORRECT ANSWER - Occupational Dose Limit for Lens of the eyes
50 rems per year - CORRECT ANSWER - Occupational Dose limit for any organ or tissue
.5 rem per gestation period - CORRECT ANSWER - Occupational dose limit for
embryo/fetus of a declared pregnancy
.1 rem per year - CORRECT ANSWER - General Public dose limit for effective dose
equivalent
NCRP recommends that the EDE due to work-related exposure not exceed the worker's age in
years - CORRECT ANSWER - Additional guidelines of NCRP
As low as reasonably achievable - CORRECT ANSWER - ALARA acronym
Maintain radiation doses to personnel in medical institutions to 10% or less of the federal limits
of occupational exposure - CORRECT ANSWER - ALARA implementation
Personnel Dosimeters - CORRECT ANSWER - devices worn by individuals exposed to
ionizing radiation to evaluate and document their cumulative external radiation doses
Questions and CORRECT Answers
Terrestrial radiation - CORRECT ANSWER - Natural background radiation that results
from the presence of naturally occurring radioactivity in the soil and earth
Cosmic radiation - CORRECT ANSWER - Natural background radiation that results from
the interaction of particles originating in outer space with the earth's atmosphere
Internal Radioactivity - CORRECT ANSWER - Natural background radiation due to
naturally occurring radionuclides that have been deposited in the human body via either
ingestion or inhalation
300 millirem - CORRECT ANSWER - Average annual effective dose equivalent in the US
(200 millirem attributed to radon gas)
Medical radiation - CORRECT ANSWER - average per capita effective radiation dose
equivalent is approximately 53 millirem per year
Department of Transport - CORRECT ANSWER - DOT
Occupational safety and Health Administration - CORRECT ANSWER - OSHA
Environmental Protection Agency - CORRECT ANSWER - EPA
Nuclear Regulatory Commission - CORRECT ANSWER - NRC
International Commission on Radiological Protection - CORRECT ANSWER - ICRP
, National Council on Radiation Protection and Measurements - CORRECT ANSWER -
NCRP
DOT, OSHA, EPA, NRC, ICRP, NCRP - CORRECT ANSWER - Agencies responsible for
radiation safety and control
5 rems per year - CORRECT ANSWER - Occupational Dose Limit for effective dose
equivalent
15 rems per year - CORRECT ANSWER - Occupational Dose Limit for Lens of the eyes
50 rems per year - CORRECT ANSWER - Occupational Dose limit for any organ or tissue
.5 rem per gestation period - CORRECT ANSWER - Occupational dose limit for
embryo/fetus of a declared pregnancy
.1 rem per year - CORRECT ANSWER - General Public dose limit for effective dose
equivalent
NCRP recommends that the EDE due to work-related exposure not exceed the worker's age in
years - CORRECT ANSWER - Additional guidelines of NCRP
As low as reasonably achievable - CORRECT ANSWER - ALARA acronym
Maintain radiation doses to personnel in medical institutions to 10% or less of the federal limits
of occupational exposure - CORRECT ANSWER - ALARA implementation
Personnel Dosimeters - CORRECT ANSWER - devices worn by individuals exposed to
ionizing radiation to evaluate and document their cumulative external radiation doses
