Regulations Flashcards
(38 cards)
What is the Effective Dose for a pregnant energy worker?
4 mSv / 400 mrem
What is the effective dose for a NEW, including a pregnant NEW in a one year dosimetry period?
50 mSv / 5000 mrem
What is the effective dose for a NEW over a 5 year dosiimetry period?
100 mSv / 10000 mrem
What is the maximum dose for non NEW for one calendar year
1 mSv / 100 mrem
Signs saying “RAYONNEMENT-DANGER-RADIATION” should always be posted if:
a) nuclear substance in a quantity greater than 100 times its exemption quantity in the area
b) probability a person will be exposed to an effective dose greater than 25 uSV/hr (2.5 mrem/hr)
The three blades and central disk of the symbol shall be:
a) magenta or black
b) located on a yellow background
No person shall use a radiation license unless:
a) its a certified model
b) on a license that authorizes its use
Licensees shall conduct leak tests to detect a leakage of __________ or less.
200 Bq
How often should a licencee conduct a leak test on a sealed source or shielding to conduct a leakage of 200 Bq or less
a) after being stored for 12 or more consecutive months, immediately before using it
b) if sealed source/shielding is being stored, every 24 months
c) been damaged, immediately after incident
d) if sealed source/shielding is in a device every 12 months
e) sealed source/shielding not located in a radiation device, every 6 months
If you detect a leakage of more than 200 Bq, who should contact the the CNSC?
Licensee
What should the you do if you detect a leak of more than 200 Bq?
a) discontinue use of source
b) discontinue use of device
c) limit spread of contamination
d) notify the commission
How often should a radiation survey meter be calibrated?
12 months
Who can operate a certified exposure device?
Certified Exposure Device Operator and/or a trainee who is under direct supervision and continuous observation
You should immediately notify the commission if the exposure device has a radiation dose rate of more than ___________.
2 mSv/hr ( 200 mrem)
Every licensee shall notify the commission if any of the following situations occur:
a) device is lost, stolen, damaged
b) dose rate exceeds 2 mSv/hr
c) sealed source is separated from exposure device
d) source assembly fails to return to the shielded position
What does the Nuclear Substances & Radiation Devices Regulations outline?
Obligations of both licensees and operators
What 4 things should every lincese must implement in a radiation protection program as per the Radiation Protection Reg?
a) control over work practices
b) qualifications and training
c) control of public and occupational exposure
d) planning for unusual situations
List 3 obligations of the operator.
a) equipment checks
b) emergency equip
c) record doses
d) errecting barriers to non-NEW and limited dose to below .1 mSv/wk and .5 mSv/yr
What 3 things must licensees of an exposure deivce do who possess, or use one?
a) affix securely
b) lock exposure device
c) return dosimeter (TLD) to dosimetery service within 10 days after end period
How often shall the licensee return their dosimeters to their dosimetery service provider?
within 15 days @ end of the day
No operator shall operate a device that has a dose rate more than ________ mSv/hr
2 mSv/hr (200 mrem/hr)
What shall a radiation survey meter be able to do in order for an operator to operate an exposure device?
a) measure dose rate of 20 µSv - 100 mSv/hr
b) batteries working
HOw long shall the tongs be?
LEAST 1.5m long
If using a guide tube, you require material that can attenuate by a factor of at least _____?
100
