TLD Test Study guide Flashcards
What is Radiation?
Electromagnetic energy or particle emitted from radioactive material.
Types of radiation?
Gamma, X-ray, Beta, Alpha, Neutrons.
Define Radiological contamination?
Finely divided radioactive particles in an unwanted location.
What is REM?
Is a unit that measures health effects of ionizing radiation on the body. It is the amount of any type of radiation that produces the same amount of biological damage as one rad of gamma radiation.
How is a TLD worn?
Front of body, at waist, double captured. Name and silver mylar face outward.
Where do you obtain a TLD?
At Dosimetry.
Where do you turn in a TLD?
Dosimetry.
Control of radiation exposure in Naval Nuclear Power Program is based on?
The assumption that any exposure, no matter how small, may involve some health risk. However, exposure within normal limits poses a small hazard compared to the risks of normal life.
What is a potential health risk from ionizing radiation exposure?
Cancer
What is ALARA?
As low as reasonably Achievable
What is each individual responsible for when it comes to radiation?
There own exposure and maintaining their exposure “ALARA”
What are three ways to minimize exposure?
Time: minimize time spent.
Distance: maximize distance between you and radiation source.
Shielding: put structural components between you and source.
Why do we minimize loose surface contamination?
To prevent ingestion/inhalation/absorption or radiological material. (Don’t let it get to you)
What methods do you use to minimize loose surface contamination?
Drape
Catch
Yellow poly
PVO controls
What risk does Exposure have on unborn child?
Within acceptable limits presents small risk compared with other risks.
If TLD is damaged or lost do the following:
Remove yourself from radiation areas, alerting others it was lost.
Report to dosimetry and rad health.
Do not enter until authorized by RHO.
Federal Radiation Protection limit?
5 rem per year
3 rem per quarter
Rem limit for extremities?
50 rem per year.
Rem limit for skin?
50 rem per year.
Rem limit for eyes?
15 rem per year.
Rem limit for pregnancy?
500 mrem for duration of pregnancy.
No more than 50 mrem per month.
Locale Ship Exposure Controls?
100 mrem per year, no more than 25 mrem per quarter for contamination workers.
25 mrem per year for all others.
What is the limit in emergency situations?
No set limit for saving a life.
Limit of 10 rem to save ship or vital equipment.
