Outcome 7 Flashcards
What do you need to prove control over in order to get your license from CNSC?
- procurement (acquisition and receipt)
- use
- storage
- disposal
what are the 5 criteria needed to acquire nuclear substances?
- the radionuclide must be on the license
- can’t exceed the activity possession limit
- can’t exceed activity limit per radionuclide
- need to send a copy of the license to supplier
- list of authorized persons must accompany the list
where do you store sealed sources?
-lock and key
- fireproof and shielded cupboard/area
how often do you perform leak tests if the source is in use?
every 6 months
how often do you perform a leak test if the source is in a device?
every 12 months
how often do you perform a leak test if the source is in storage?
every 24 months
what is the CNSC criteria for maximum leak?
200 Bq
where do you log sealed sources?
sealed source central registry
where do you log info on open sources?
open source central registry (has all the open sources in the department’s possession)
open sources don’t have independent inventory logs. t/f
false.
they have their own because it documents the uses of the ns and disposal/transfer
at sait, what colour is the inventory form? radiopharmaceutical control form?
invent - blue
radio. - white
What is required to be posted outside a storage area?
- radiation warning symbol
- “caution radioactive material storage area”
- name, Job title, and telephone number of emergency contact persons
procedures for security must be described in the radiation safety manual. t/f
true
leak testing must be performed on sources that have an activity greater than?
50 MBq
every licensee who transfers a sealed source or radiation device must:
- transfer only to another licensed area
- provide the facility with complete records
what information is needed on records?
- copy of license
- date of transfer or release
- name, quantity and form of ns
- serial number of sealed source or radiation device
- most recent leak test results of sealed sources
open source release limit of I-125 for municipal garbage? sewer system?
municipal - 0.037 MBq/kg
sewer - 100 MBq/yr
open source release limit of I-131 for municipal garbage? sewer system?
municipal - 0.037 MBq/kg
sewer - 10 MBq/yr
open source release limit of Cr-51 for municipal garbage? sewer system?
municipal - 3.7 MBq/kg
sewer - 100 MBq/yr
open source release limit of Co-57 for municipal garbage? sewer system?
municipal - 0.37 MBq/kg
sewer - 1000 MBq/yr
open source release limit of Co-58 for municipal garbage? sewer system?
municipal - 0.37 MBq/kg
sewer - 100 MBq/yr
open source release limit of Tc-99m for municipal garbage? sewer system?
municipal - 3.7 MBq/kg
sewer - 1000 MBq/yr
what is the release limit of I-131 in the atmosphere?
0.175 kBq/m3
what are some decay storage rules?
- don’t mix beta and gamma emitter waste
- separate the long-lived radionuclides from short-lived radionuclides
- separate sharps, glass and soft garbage
- properly labeled
- store for at least 10 t1/2s and down to background levels
what are the options for disposing sealed sources?
- less than allowable MBq/kg or less than 1 EQ = regular garbage
- decay store it
- transfer to CNSC certified waste management facility
when must the CNSC be contacted?
- EDL exceeded
- release of radioactivity not authorized by the license
- any breach of security
- serious illness/injury as a result of licensed activity
- death of a person at a nuclear facility
a full written report must be filed within ____ days if there is an incident that indicates a ______.
21 days, loss of control
what information is written on the report?
- date, time and location of situation
- description of the situation
- probable cause of the situation
- effects on environment, health and safety of persons and maintenance of security
- effective and equivalent dose received by each person involved
- action taken by the licensee to prevent the incident from occurring again
who needs to be contacted when a nuclear substance goes missing?
rso, managment/rsc, cnsc
how many days do you need to notify the cnsc if you want to dispose of records?
90 days
