NMTCB radiation safety exam
The survey regulations on the after loading device used in brachytherapy include surveys of - ANSWER-Connectors of apparatus
Placement of 2 dosimeters for fluoroscopy - ANSWER-Inside apron at chest level and outside apron at neck or eye level
The number of electrons released per unit of Time by the cathode is - ANSWER-Directly proportional to the current passing through it
Grids in a X-ray system - ANSWER-Increase contrast thus increase image quality and dose to patient and staff by a factor of 2 or more
Collimation in fluoroscopy - ANSWER-Is generally circular or rectangle to match the shape of the image receptor.
Last image hold in fluoroscopy is a dose saving technique in which type of Collimation - ANSWER-Electronic only
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. - ANSWER-500 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.
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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 - ANSWER-Within 90 days of employment and every 3 years.
Transportation index (TI) - ANSWER-Maximum radiation level in Millirem hr at 1 meter.Must be rounded up the next tenth.
UN2908 - ANSWER-Empty class 7.
UN 2910 - ANSWER-Limited quantity of radioactive material Less than 0.5 mr/ hr
UN2915 - ANSWER-Used for: white 1, yellow,2 and yellow 3
Yellow III requirement - ANSWER-Driver must have hazmat cdl license and vehicle must be placarded
Wipe test - ANSWER-Legal 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 - ANSWER-1 mci = .037GBq 27 mci = 1 GBq
International Air Transport Association (IATA) dangerous goods regulations - ANSWER- Anyone 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 - ANSWER-For materials with 120 day or less half life Dispose of in regular trash when levels reach background Deface all labels
'White 1 package - ANSWER-Surface <0.5 mr/hr.
- meter = bkg
Yellow II - ANSWER-Surface < 50 mr/hr
- meter = 1 mr/hr
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