Time
What is the maximum period of time a TLD may be worn?
3 months
Which types of dosimeters can provide an instant readout for radiation worker exposures?
Personnel digital ionization dosimeter
Pocket ionization chamber
What 3 filters are incorporated into the detector packet of an OSL dosimeter?
Aluminum
Tin
Copper
What is the lowest level of radiation that can be detected by an OSL?
1mR or 10 usv
What is the staff annual dose limit in mR?
5000 mR
Know this due to our reports showing in mR
What is the maximum period of time an OSL may be worn?
Up to 1 year, but commonly worn 1-3 months.
What are 3 disadvantages of the pocket ionization chamber?
Can discharge if subjected to mechanical shock
Provide no permanent legal record so facilities must document and keep records
Must be read daily, otherwise produces inaccurate readings due to electric charge escaping
What employees is the OSL an excellent and practical monitoring device for?
Low-radiation environment workers and pregnant workers
What is the lowest level of radiation that can be detected by an TLD?
5mR or 50 usv
What is the instruments name, that is also called a "cutie pie"?
Ionization Chamber-type survey meter
What is the maximum period of time a Pocket Ionization Dosimeter may be worn?
Must be readout daily.
What are 4 advantages of the personnel digital ionization dosimeter?
Instant access to reports
No waiting time for mailing dosimeters
Lightweight and durable
Can be dropped or scratched with little chance of harm to the device
What is the purpose of the different colors on the front of the white paper packet on an OSL?
Show correct usage and placement of dosimeter on the body.
What is the lowest level of radiation that can be detected by an Pocket Ionization Chamber?
0mR or 0 Usv
Employers are required to provide badges should there be the potential for close to ______ mSv.
5
What is the maximum period of time a DAP may be worn?
DAP is not worn. It is located below the collimator.
What is a disadvantage of the OSL?
Exposure is not determinable on the day of occurrence without in house reader. Must be mailed out for results.
When the letter M appears on the personnel monitoring report it signifies what?
Equivalent dose below the minimum measurable radiation quantity was recorded during that time.
The thyroid dose is derived from which reading? Primary or Secondary badge
Primary Badge
Which dosimeter resembles a fountain pen?
Pocket ionization chamber
Dosimeter badge reports contain what information?
Quarter to date readings
Year to date readings
Lifetime readings
Deep, Lens and Shallow dose readings
What are 3 advantages of the OSL?
Can be used for up to 1 year
Lightweight, durable and easy to carry
Integrated, self-contained, preloaded packet
How is the OSL dosimeter read out?
Laser light at selected frequencies.
While wearing a lead apron, where should the primary badge be worn?
On the collar, outside of the lead.
What is the purpose of the filters inside a dosimeter?
To determine the intensity and direction of the exposure.