Radiation Protection and Federal Regulations

What is the total body exposure for a member of the general public?

1 mSv or .1 rem /yr
What is the occupational total body exposure limit?

50 mSv or 5 rem/yr
What is the occupational skin/extremity exposure limit?

500 mSv or 50rem/yr
What is the occupational eye exposure limit?

150 mSv or 15/yr
What is the occupational organ/tissue exposure limit?

500 mSv or 50rem/yr
What is the occupational embryo/fetus limit?

5 mSv or .5rem for the entire pregnancy
Define bioassay
- A bioassay is any measurement of radioactivity that has been internalized by an individual
- *external counting or counting biological samples such as blood, urine, or other bodily fluids*
The radiation level for an unrestricted area can be no more than?

2mrem or .02mSv
Where would the sign Caution: Radioactive materials be posted?
- Any area in which certain quantities of radioactive materials are used or stored.
- Found on entrances to work areas or labs.
- Indicate the potential of presence of radiation sources and/or contamination.
Where would the sign Caution: Radiation area be posted?

Any area in which an individual could receive more than 5mrem (.05mSv) in 1hr at 30cm from the radiation source.
Where would the sign Caution: High Radiation Area be posted?

Areas in which an individual could receive more than 100mrem (1mSv) in 1 hr @ 30 cm.
Where would the sign Grave Danger: Very high radiation area be posted?

Areas in which an individual could receive an absorbed dose of 500rads (5Gy) in 1 hr @ 1m from the source.
When receiving a package, it should never exceed how many mR/hr?

200 mR/hr at the surface or 10 mR @ 1 m. If so the carrier and NRC need to be notified ASAP!!!
When receiving a package, it should never exceed how many dpm?

22 dpm/cm²
How do you determine well counter efficiency?

efficiency= net cpm/dpm
A radioactive material must have a half life less than ___________ can be retained in a shielded storage area until they have reached background.

120 days

Author

asparkle23

228154

Card Set

Radiation Protection and Federal Regulations

Description

Rad safety, regulations, ALARA

Updated

2013-07-25T18:27:15Z

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