Solutions
a monitored person may receive up too 5000 mR per year. what would be considered an
excessive amount of radiation exposure to that individual Correct Ans-any unnecessary
exposure to radiation
the primary form of shielding provided by modern exposure devices Correct Ans-depleted
uranium (DU)
a thickness of 0.19 in of lead will reduce the exposure of Ir-192 to one-half its original intensity.
this is known as the Correct Ans-half-value lay of lead for the energies associated with Ir-192
fixed facilities, also known as shooting rooms, must be inspected at regular intervals to ensure
that all visible and audible warning signals are in place and operable. this is documented
Correct Ans-daily prior to use
when high-speed electrons strike a hard surface (target) which is not a result Correct Ans-
neutron beans
what does the bremsstrahlung effect generate Correct Ans-x-rays and heat
the filament of an x-ray tube is energized by electrical current. the difference in the electrical
potential draws the free electrons to the _____. as they strike at such a high speed, x-rays are
produced by the bremsstrahulung process Correct Ans-target
, high-speed electrons striking a target produce primarily what Correct Ans-heat
x-ray machines work on the principle of bremsstrahulung or braking. which component is not
required to produce this effect Correct Ans-focusing cap
a control panel in an x-ray system must have clearly visible which of the following statements
Correct Ans-caution: x-rays produced when energized
what components are required to produce x-rays Correct Ans-a power source, free electrons,
and a target
the output equivalent to curies with an x-ray tube is controlled by the Correct Ans-amperage
rheostat
electrons are produced by which componenet of an x-ray tube Correct Ans-filament
x-ray systems are required to have two visible indicators to show when x-rays are produced. one
indicator may be the milliampmeter, the other a red light. this light must be labeled Correct
Ans-x-ray on
which in a field setting, radiography is conducted using a 300 kV x-ray system. what minimum
boundaries must be set Correct Ans-high radiation and radiation areas