Radiation Safety

ALARA concept define as

• As Low As Reasonably Accepted

• As Low As Reasonably Achieveable

• As Low As Radiation Available

Name 3 Principle of Radiation Protection that minimise radiation exposure

• Shielding, Time and Distant

• Shielding, Detector, PPE

• Calibration, Detector, PPE

The Roentgen (R) exposure is measured in:

• Tissue

• Water

• Lab

• Air

Which unit describes how radioactive a radiation source is?

• Gray, Gy

• Sievert, Sv

• Becquerel, Bq

• Rad

The annual dose limit for the whole body of an adult (over 18) at work is:

• 20 mSv

• 1 Sv

• 50 mSv

• 20 Sv

You can reduce your exposure to radiation by doing the following:

• Increasing your distance from the source

• Decreasing the amount of time near the source

• Provide shielding between yourself and the source

• None of the above

Gamma radiation can be shielded with:

Paper

Your skin

Aluminum

Lead

• Paper

• Skin

• Aluminium

• Lead

What is the effective dose limit for a non-nuclear energy worker?

• 3 miliseiverts per year

• 1 milisievert per year

• 20 miliseiverts per year

• None of the above

The annual dose limit for the whole body of an adult (over 18) at work is:

• 20 mSv

• 1 Sv

• 50 mSv

• 20 Sv

To protect yourself from the internal radiation exposure, you should:

• NOT eat and drink in the lab

• NOT store empty cups/containers/utensils in the lab or near radioactive materials

• NOT store food and/or drink in the lab

• All of the above