Exam (elaborations)
NMTCB radiation safety exam Questions and Answers 2024
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NMTCB radiation safety exam
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NMTCB radiation safety exam'White 1 package - answer Surface <0.5 mr/hr.
1 meter = bkg
Yellow II - answer Surface < 50 mr/hr
1 meter = 1 mr/hr
Yellow III - answer Surface < 200
1 meter = 10 mr/hr
Type A package - answer Adequate for normal transport.
1,2,3
Type B - answer Used for large quantities of radioactive material
Caution radioactive materials - answer Where radiation is used or stored.
Usually entrance of labs.
Caution Radiation Area - answer More than 5 rem (.05 mSv) in 1 hr at 30 cm from
source
Caution High Radiation Area - answer More than 100 rem (1 mSv) in 1 hr at 30 cm from
source
Usually where Radiation therapy is performed.
Grave Danger Very High Radiation Area. - answer500 Rad in 1 hr
Unrestricted Area - answer Person could not be exposed to in excess to 2 mr/hr
Restricted area - answer Controlled access area for the protection of individuals from
exposure to radiation.
Posting exemptions - answer Licensee is not required to post a room containing RAM
for 8 hrs or less. Materials must be constantly attended.
Surveys of individual doses, bioassay' and release of radioactive effluents - answer
Licensee shal maintain these records until termination of the license.
Hazmat - answer Any substance or material that is capable of posing an unreasonable
risk to health, safety and property when transported in commerce.
Hazmat training - answerWithin 90 days of employment and every 3 years.
, Transportation index (TI) - answerMaximum radiation level in Millirem hr at 1 meter.
Must be rounded up the next tenth.
UN2908 - answerEmpty class 7.
UN 2910 - answerLimited quantity of radioactive material
Less than 0.5 mr/ hr
UN2915 - answerUsed for: white 1, yellow,2 and yellow 3
Yellow III requirement - answerDriver must have hazmat cdl license and vehicle must
be placarded
Wipe test - answerLegal limit = 6,600dpm/300cm^2 or 22dpm/1cm^2
Returned containers - answer-no removable contamination
-surface reading <0.5 mr/hr
Syringes with blood must be marked as biohazard
To convert mci to GBq - answer1 mci = .037GBq
27 mci = 1 GBq
International Air Transport Association (IATA) dangerous goods regulations -
answerAnyone preparing a shipment by air must be trained in IATA regulations.
- no packages in passenger compartment
- TI not to exceed 3 on passenger plane
- ti not to exceed 10 on cargo plane
- Shippers declaration of dangerous goods needs to be completed
- need training every 2 years
Decay in storage - answerFor materials with 120 day or less half life
Dispose of in regular trash when levels reach background
Deface all labels
How long should survey records and calibrations be kept - answer3 years
Air Kerma at reference point (Ka,r) or (Ka,r,Gy) is - answerThe patient dose associated
with deterministic skin effects
Image wisely - answerCampaign to reduce radiation exposure to the adult population
High dose rate (HDR) brachytherapy - answerDelivers 20 or greater rads per minute
Low dose (LDR) Brachytherapy - answerDelivers 4 to 200 rads per hr
Used to treat oral cavity cancers
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