RTT- Radiation Safety and QA Board Review Questions With Correct Answers
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RTT
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RTT
RTT- Radiation Safety and QA Board
Review Questions With Correct Answers
Natural sources of background radiation - answer3% terrestrial (soil)
37% (radon is leading source of natural background radiation)
5% cosmic (mostly protons from space that shower secondary particles)
5% Internal (mainly...
2% consumer products (building materials, commerical air travel)
Radiation fall out
.1% Industry
Average annual radiation dose to a member of the general population is about.. - answer✔✔620
mrem
310=man made (mainly medical procedures)
310=natural background (mainly radon in the air)
The rate at which the isotope decays, used to describe the strength of a radioactive source -
answer✔✔activity
what is activity measured in? - answer✔✔curie (traditional unit)
EXAM STUDY MATERIALS July 26, 2024 9:30 AM
,becquerel (SI unit)
The measure of the ionization produced in air by x-rays or gamma rays - answer✔✔expsoure
what is exposure measured in - answer✔✔Roentgen (R)( Traditional unit)
Coulomb/kg (SI unit)
The measure of energy imparted to a mass by ionizing radiation - answer✔✔Absorbed dose
what is absorbed dose measured in - answer✔✔Gray (SI unit)
Rad
Unit equating the dose delivered by different types of radiation and their effects - answer✔✔dose
equivalent
what is dose equivalent measured in - answer✔✔Rem
Sievert (SI unit)
Tissue weighting factor is associated with what Radiation Unit - answer✔✔Dose equivalent
rem=rad x QF
SV=GyxQF
takes into account the type of radiation and its ability to produce biologic damage -
answer✔✔Dose equivalent
QF ... - answer✔✔weights the different effectiveness by different types of radiation
Quality factors of
Xray
Gamma Ray
Beta Particle
Thermal neutrons
Fast neutrons
Alpha particles - answer✔✔1
1
EXAM STUDY MATERIALS July 26, 2024 9:30 AM
, 1
5
20
20
1 CI is equal to... - answer✔✔3.7 x 10^10 disintegrations/second
or
37 billion disintegrations/second
I BQ equals.. - answer✔✔1 disintegration/second
does not have enough sufficient energy to knock an outer shell electron from an atom -
answer✔✔non-ionizing radiation
has the energy required to knock an outer shell electron from an atom - answer✔✔ionizing
radiation
fast moving, subatomic particles - answer✔✔particulate radiation
particulate radiation... - answer✔✔directly ionizing
have mass and carry a charge with the exception on the neutron which are electrically neutral,
types of electromagnetic energy.. - answer✔✔xrays
gamma rays
EM energy... - answer✔✔has no mass, no charge, indirectly ionizing and travel at the speed of
light ( 3 x 10 ^8 m/second) (3 x 10^10 cm/second)
Emitted from the nuclei of heavy elements (uranium, plutonium) during radioactive decay -
answer✔✔Alpha particles (originate outside the nucleus, identical to helium atom)
Contain 2 protons and 2 neutrons and is identical to the helium nucleus - answer✔✔Alpha
particles
Alpha particles have.... - answer✔✔positive charge
great mass
do not penetrate to any appreciable depth
HIGH LET
EXAM STUDY MATERIALS July 26, 2024 9:30 AM
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