Cedo - (Section 4) Monitoring For Radiation

Question 0

What is the most important field instrument to have and use?

Answer 0

A Survey meter

Question 1

What are the two basic types of devices used to detect radiation?

Answer 1

Portable hand-held gamma survey meters and dosimeters

Question 2

What are some types of survey meters?

Answer 2

• Ion Chamber Instruments
• Geiger Muller Counter
• Proportional Counters

Question 3

What do survey meters measure?

Answer 3

Intensity of radiation and the process of ionization.

Question 4

What do dosimeters measure?

Answer 4

Total absorbed dose over time.

Question 5

What are the main types of dosimeters?

Answer 5

• Direct Reading Dosimeters
• Thermoluminescent Dosimeters (TLD)
• Optically Stimulated Thermoluminescent Dosimeters (OSL)
• Personal Alarming Dosimeter

Question 6

What agency supplies TLD’s?

Answer 6

Bureau of Radiation and Medical Devices.

Question 7

What agency reads TLD’s?

Answer 7

National Dosimetry Service Health Canada.

Question 8

OSL’s can detect what kind of radiation?

Answer 8

X-Rays (x), Gamma-Rays (γ) and beta Particles (β)

Question 9

What’s the range of detection for OSL’s?

Answer 9

(x) & (γ) 10 (μSv) - 10 (Sv) or 1(mrem) - 1000 (rem)

β) 100 (μSv) - 10 (Sv) or 10 (mrem) - 1000 (rem

Question 10

What are 3 objectives of the Dosimetry Service?

Answer 10

• Calculate and record of absorbed doses.
• Report to organizations individual doses received.
• Report doses that have exceeded regulatory limits.

Question 11

Where should a TLD/OSL be worn?

Answer 11

Between your waist and neck.

Question 12

CNSC requires that alarming dosimeters be worn when and by whom?

Answer 12

At all times by trainees and CEDO’s.

Question 13

Alarming dosimeters must never be used in place of what?

Answer 13

A survey meter.