Radiation Protection Final Exam Questions
and Answers| Latest Update
Who interviews the individual when an ALARA investigation occurs? A member of the
RSO staff
What is required for monitors? They must be durable to tolerate normal use, must be able
to reliably detect exposures from small to large, and must be easy to maintain
What kinds of filters do film badges have? Aluminum and copper
Does a film badge provide a permanent, legal record? Yes
What are the disadvantages of film badges? They are effected by temps and humidity, are
not reusable, and the readings can take a longer time because the film badges have to be sent out
to be read
What kind of detector is in an OSL? Aluminum oxide
What kind of filters does an OSL contain? Aluminum, tin, and copper
How is an OSL read? It becomes luminescent which is proportional to the amount of
exposure received
,What are the advantages of an OSL? They are not affected by heat, moisture, or pressure
and they offer complete reanalysis
What is the recommended period of use for an OSL? A 2 month period
- Can have extended wear up to one year
What is the major disadvantage of an OSL? It must be sent out to be read
What is a TLD? It is a light free device with crystalline form of lithium fluoride that
functions as the sensing material
What are the advantages of a TDL? They are not effected by humidity or normal
temperature changes and the crystals can be reused after reading
What is a disadvantage of a TDL? The readings can be lost if not carefully recorded
because once the energy is released from the crystals it cannot be reread
What does a pocket ionization chamber resemble? A fountain pen
True/False: Pocket ionization chambers can be either self-reading or non-self-reading True
What is an advantage of a pocket ionization chamber? It provides an immediate readout
, What are the disadvantages of a pocket ionization chamber? They are inaccurate if not
read daily and there is no permanent legal record of the readings
What is the purpose of recording personnel monitoring? It keeps an ongoing tally of
employee exposures
How long should personnel monitoring records be kept for? They should be kept
permanently
True/False: Records should be retrieved from previous employers and presented to new
employers True
What are the required timeframes of personnel monitoring? The period of time wearing,
quarterly, yearly, and lifetime
Deep dose equivalent (DDE): Measures the absorbed dose
Shallow dose equivalent (SDE): Measures the dose to the external skin
Committed Dose Equivalent (CDE): It is the total dose equivalent received over a period
of time, usually 50 years
and Answers| Latest Update
Who interviews the individual when an ALARA investigation occurs? A member of the
RSO staff
What is required for monitors? They must be durable to tolerate normal use, must be able
to reliably detect exposures from small to large, and must be easy to maintain
What kinds of filters do film badges have? Aluminum and copper
Does a film badge provide a permanent, legal record? Yes
What are the disadvantages of film badges? They are effected by temps and humidity, are
not reusable, and the readings can take a longer time because the film badges have to be sent out
to be read
What kind of detector is in an OSL? Aluminum oxide
What kind of filters does an OSL contain? Aluminum, tin, and copper
How is an OSL read? It becomes luminescent which is proportional to the amount of
exposure received
,What are the advantages of an OSL? They are not affected by heat, moisture, or pressure
and they offer complete reanalysis
What is the recommended period of use for an OSL? A 2 month period
- Can have extended wear up to one year
What is the major disadvantage of an OSL? It must be sent out to be read
What is a TLD? It is a light free device with crystalline form of lithium fluoride that
functions as the sensing material
What are the advantages of a TDL? They are not effected by humidity or normal
temperature changes and the crystals can be reused after reading
What is a disadvantage of a TDL? The readings can be lost if not carefully recorded
because once the energy is released from the crystals it cannot be reread
What does a pocket ionization chamber resemble? A fountain pen
True/False: Pocket ionization chambers can be either self-reading or non-self-reading True
What is an advantage of a pocket ionization chamber? It provides an immediate readout
, What are the disadvantages of a pocket ionization chamber? They are inaccurate if not
read daily and there is no permanent legal record of the readings
What is the purpose of recording personnel monitoring? It keeps an ongoing tally of
employee exposures
How long should personnel monitoring records be kept for? They should be kept
permanently
True/False: Records should be retrieved from previous employers and presented to new
employers True
What are the required timeframes of personnel monitoring? The period of time wearing,
quarterly, yearly, and lifetime
Deep dose equivalent (DDE): Measures the absorbed dose
Shallow dose equivalent (SDE): Measures the dose to the external skin
Committed Dose Equivalent (CDE): It is the total dose equivalent received over a period
of time, usually 50 years
