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33 Cards in this Set
- Front
- Back
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Name types of personnel dosimeters |
Film badges, pocket dosimeters, optically stimulated luminescence dosimeters (OSL), thermoluminescent dosimeters (TLD) |
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Name types of survey instruments |
Geiger-Muller, cutie pie |
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What kind of filters do we see in OSL? |
aluminum, tin, copper |
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What kind of detector does OSL have? |
aluminum oxide detector |
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How long can you wear an OSL? |
up to a year, but usually 1-3 months |
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How sensitive is an OSL? |
1 mrem |
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Where do we keep our control dosimeter? |
radiation-free area |
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Are OSL’s sensitive to heat and humidity? |
No |
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Do we get an immediate reading with OSL dosimeters? |
No |
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How sensitive are film badges? |
10 mrem |
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What’s used to measure film badges? |
densitometer |
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Do you get immediate results when reading film badges? |
No |
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How long can film badges be worn? |
1 month |
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What kind of detector do TLD’s have? |
lithium fluoride crystals |
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What device is used to measure TLD’s? |
TLD analyzer |
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Are TLD’s affected by heat and humidity? |
No |
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How long can TLD’s be worn? |
3 months |
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Most sensitive type of dosimeter? |
Pocket dosimeter |
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Most common survey meter using ionization chamber? |
cutie pie |
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OSL read out by |
laser light |
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Metal filters contained in film badges? |
aluminum or copper |
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How do monitoring companies report dose? |
deep, eye, shallow |
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Occupational EfD limit |
50 mSv |
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OSL |
Optically Stimulated Luminescence Dosimeter |
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TLD |
Thermoluminescent Dosimeter |
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OSL Advantages |
lightweight; durable; not affected by heat, moisture, or pressure; provides low readings |
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OSL Disadvantages |
exposure only recorded in area device worn; exposure cannot be determined on day of occurrence without in-house reader; not efficient if not worn |
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Film Badges Advantages |
permanent legal record of exposure; reasonably economical |
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Film Badges Disadvantages |
fogging of film caused by temperature, humidity, or wetness or being worn more than 1 month; takes time to get results |
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TLD Advantages |
not affected by humidity, pressure, & normal temperatures; worn 3 months |
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TLD Disadvantages |
read only once since readout destroys info; may be reused, but once crystal heated record of previous exposure gone |
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Pocket Badges Advantages |
provide immediate exposure readout for workers in high exposure areas |
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Pocket Dosimeters Disadvantages |
expensive; read daily since electric charge tends to escape; no permanent record; false high readings obtained if not read daily |
