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CEDO > CNSC Working Safely With Industrial Radiography > Flashcards

CNSC Working Safely With Industrial Radiography Flashcards

1
Q

Wilhelm Roentgen

A

Discovered x-rays

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2
Q

Industrial Radiography

A

Using radiation to produce images and see inside of a given specimen

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3
Q

Radiograph

A

Image produced using radiation and film/imaging plates

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4
Q

Responsibilities of CNSC

A

Regulate nuclear industry in Canada

Protect national security, health and safety of Canadians and the environment

Enforce NSCA

Issue licenses + ensure regulatory compliance

Certify exposure devices and EDOs

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5
Q

Two types of radiation used in industrial radiography

A

X-rays

Gamma sources such as Ir192, Co60 and Se75

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6
Q

Required operating temperature range for exposure devices

A

Canadian certification of exposure devices
requires them to operate over the broad
temperature range of –40ºC to 45ºC.

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7
Q

Radiation

A

Energy emitted by an atom or other
body as it changes from a higher energy state to a lower energy state

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8
Q

Natural background radiation

A

Found in soil, rocks, food, air, building materials, cosmic rays, and our bodies.

It contributes to about ¾ of our
annual radiation exposure.

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9
Q

Dose which may cause symptoms of radiation sickness

A

1000mSv
1Sv

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10
Q

Five-year dose limit for nuclear energy workers

A

100mSv

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11
Q

Annual dose limit for nuclear energy workers

A

50mSv

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12
Q

Average annual dose for an industrial radiographer

A

3mSv

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13
Q

Average annual dose from natural background radiation
in Canada

A

1.8mSv

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14
Q

Annual public dose limit

A

1mSv

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15
Q

Three principles of radiation protection

A

Time
Distance
Shielding

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16
Q

Responsibilities of Radiation Safety Officer

A

Designated by the licensee as persons responsible for being well-informed about radiation protection principles, methods and practices, as related to the licensed activity.

Effectively manage the radiation protection program.

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17
Q

Responsibilities of Industrial Radiographer

A

Comply with applicable regulations and follow radiation protection program established by their employers.

Ensure their safety, as well as safety of the public and the environment.

Wear appropriate PPE, and consider/mitigate all hazards and risks.

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18
Q

How often are exposure device leak tests required?

A

Every 12 months on both the sealed source and the shielding

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19
Q

What activity is allowed on an exposure device leak test?

A

200Bq or less

20
Q

What happens if an exposure device fails a leak test?

A

Device must be removed from use, and the CNSC must be immediately notified.

21
Q

Source changer

A

CNSC-certified transport package designed for source exchange purposes.

22
Q

Requirements for using source changer

A

Must be done by CEDO who has received training and specific
written authorization from the licensee.

Must specifically record dosimeter reading for this activity.

23
Q

Types of Personal Dosimeters

A

Passive dose-measuring equipment:

Thermoluminescent dosimeter (TLD)
Optically stimulated luminescence dosimeter (OSLD).

24
Q

Direct Reading Dosimeter (DRD)

A

Real-time dosimeter that monitors the absorbed dose to the worker. Checked periodically by the radiographer during the shift to verify doses received during radiography work.

25
Q

Personal Alarming Dosimeter

A

Emits an audible warning signal when a dose rate alarm set point is exceeded.

26
Q

Survey Meter

A

Measures radiation dose rate. A radiation survey meter must
be calibrated every 12 months for the intended use.

27
Q

What is a Survey Meter used for?

A

Confirm appropriate positioning of signs and barriers.

Confirm source has returned to shielded position after every exposure.

Confirm integrity of exposure device shielding prior to transport or use.

28
Q

Training requirements for industrial radiographers

A

Basic radiation safety + ALARA principles

Review of licensee radiation safety program + regulatory requirements

Review of the license and its conditions

Importance of barriers and signage

29
Q

Responsibilities of CEDO

A

Safely and securely handle exposure devices

Prepare exposure devices for transport

Store and operate exposure devices and related accessories

Properly utilize radiation detection and measurement equipment

Understand and comply with all relevant regulatory requirements

30
Q

Trainee supervisors

A

CEDOs who directly supervise and continuously observe the trainee during the operation of an exposure device.

Expected to be close enough to ensure the safe operation of the device, the accessory equipment and radiation monitoring equipment.

31
Q

Lost or stolen exposure device

A

Immediately report to CNSC by calling CNSC Duty Officer

Immediately contact local law enforcement

32
Q

Vehicle carrying exposure device involved in an accident

A

RSO reports to the CNSC, describing the location and circumstances of the accident and any action(s) taken or proposed to be taken as a result of the accident.

Limit the spread of any radioactive material

Restrict the area accordingly and send for assistance as required

Place barriers, signs or personnel at every point of entry

Record the name, address and telephone number of anyone who may have been exposed

Plan radiographic source recovery

33
Q

Survey meter is damaged

A

Remove meter from service, assume the source is in unshielded position and stop work until operational and calibrated survey meter is available

34
Q

Becquerel

A

International System (IS) unit of activity equal to one radioactive disintegration per second

35
Q

CNSC (Canadian Nuclear Safety Commission)

A

Federal agency responsible for regulating the nuclear industry in Canada.

36
Q

Certified Exposure Device Operator (CEDO)

A

Person certified by the CNSC, with the knowledge, skills and decision-making abilities necessary to safely operate an exposure device.

37
Q

Dose

A

Radiation absorbed by the body

38
Q

Dosimeter

A

Instrument that measures radiation doses. (TLD, OSLD, DRD)

39
Q

Exposure Device

A

Radiation device designed for carrying out radiography.

Includes any accessory to the device (including any sealed source assembly, shielding, drive mechanism, sealed assembly guide tube and exposure head).

40
Q

Ionizing radiation

A

Radiation which ionizes atoms (removing electrons) when it passes through matter, and is potentially dangerous to humans.

41
Q

Leak test

A

Test performed to ensure sealed source is intact.

42
Q

Licensee

A

A company or person to whom a CNSC licence has been issued for the possession and use of nuclear substances and radiation devices.

43
Q

Nuclear Energy Worker (NEW)

A

A person required to perform duties in such circumstances that there is a reasonable probability they may receive a dose of radiation greater than the regulatory limit for the general public

44
Q

Operating Procedures

A

Instructions supplied by the licensee covering radiation safety and regulatory requirements related to the use and possession of exposure devices.

45
Q

Overexposure

A

Radiation dose to a person in excess of regulatory limits

46
Q

Sievert

A

Metric unit for measuring radiation dose

1Sv = 100 rem

CEDO (4 decks)

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