Outcome 7

Question 1

What do you need to prove control over in order to get your license from CNSC?

Answer 1

• procurement (acquisition and receipt)
• use
• storage
• disposal

Question 2

what are the 5 criteria needed to acquire nuclear substances?

Answer 2

1. the radionuclide must be on the license
2. can’t exceed the activity possession limit
3. can’t exceed activity limit per radionuclide
4. need to send a copy of the license to supplier
5. list of authorized persons must accompany the list

Question 3

where do you store sealed sources?

Answer 3

-lock and key
- fireproof and shielded cupboard/area

Question 4

how often do you perform leak tests if the source is in use?

Answer 4

every 6 months

Question 5

how often do you perform a leak test if the source is in a device?

Answer 5

every 12 months

Question 6

how often do you perform a leak test if the source is in storage?

Answer 6

every 24 months

Question 7

what is the CNSC criteria for maximum leak?

Answer 7

200 Bq

Question 8

where do you log sealed sources?

Answer 8

sealed source central registry

Question 9

where do you log info on open sources?

Answer 9

open source central registry (has all the open sources in the department’s possession)

Question 10

open sources don’t have independent inventory logs. t/f

Answer 10

false.
they have their own because it documents the uses of the ns and disposal/transfer

Question 11

at sait, what colour is the inventory form? radiopharmaceutical control form?

Answer 11

invent - blue
radio. - white

Question 12

What is required to be posted outside a storage area?

Answer 12

• radiation warning symbol
• “caution radioactive material storage area”
• name, Job title, and telephone number of emergency contact persons

Question 13

procedures for security must be described in the radiation safety manual. t/f

Answer 13

true

Question 14

leak testing must be performed on sources that have an activity greater than?

Answer 14

50 MBq

Question 15

every licensee who transfers a sealed source or radiation device must:

Answer 15

• transfer only to another licensed area
• provide the facility with complete records

Question 16

what information is needed on records?

Answer 16

• 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

Question 17

open source release limit of I-125 for municipal garbage? sewer system?

Answer 17

municipal - 0.037 MBq/kg
sewer - 100 MBq/yr

Question 18

open source release limit of I-131 for municipal garbage? sewer system?

Answer 18

municipal - 0.037 MBq/kg
sewer - 10 MBq/yr

Question 19

open source release limit of Cr-51 for municipal garbage? sewer system?

Answer 19

municipal - 3.7 MBq/kg
sewer - 100 MBq/yr

Question 20

open source release limit of Co-57 for municipal garbage? sewer system?

Answer 20

municipal - 0.37 MBq/kg
sewer - 1000 MBq/yr

Question 21

open source release limit of Co-58 for municipal garbage? sewer system?

Answer 21

municipal - 0.37 MBq/kg
sewer - 100 MBq/yr

Question 22

open source release limit of Tc-99m for municipal garbage? sewer system?

Answer 22

municipal - 3.7 MBq/kg
sewer - 1000 MBq/yr

Question 23

what is the release limit of I-131 in the atmosphere?

Answer 23

0.175 kBq/m3

Question 24

what are some decay storage rules?

Answer 24

• 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

Question 25

what are the options for disposing sealed sources?

Answer 25

• less than allowable MBq/kg or less than 1 EQ = regular garbage
• decay store it
• transfer to CNSC certified waste management facility

Question 26

when must the CNSC be contacted?

Answer 26

• 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

Question 27

a full written report must be filed within ____ days if there is an incident that indicates a ______.

Answer 27

21 days, loss of control

Question 28

what information is written on the report?

Answer 28

• 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

Question 29

who needs to be contacted when a nuclear substance goes missing?

Answer 29

rso, managment/rsc, cnsc

Question 30

how many days do you need to notify the cnsc if you want to dispose of records?

Answer 30

90 days