Radiation Protection and Federal Regulations

Card Set Information

Author:
asparkle23
ID:
228154
Filename:
Radiation Protection and Federal Regulations
Updated:
2013-07-25 14:27:15
Tags:
Rad Safety Nuclear Medicine Registry Review
Folders:

Description:
Rad safety, regulations, ALARA
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  1. What is the total body exposure for a member of the general public?
    1 mSv or .1 rem /yr
  2. What is the occupational total body exposure limit?
    50 mSv or 5 rem/yr
  3. What is the occupational skin/extremity exposure limit?
    500 mSv or 50rem/yr
  4. What is the occupational eye exposure limit?
    150 mSv or 15/yr
  5. What is the occupational organ/tissue exposure limit?
    500 mSv or 50rem/yr
  6. What is the occupational embryo/fetus limit?
    5 mSv or .5rem for the entire pregnancy
  7. 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*
  8. The radiation level for an unrestricted area can be no more than?
    2mrem or .02mSv
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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!!!
  14. When receiving a package, it should never exceed how many dpm?
    22 dpm/cm2
  15. How do you determine well counter efficiency?
    efficiency= net cpm/dpm
  16. 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

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