Radioactive Contamination

Question 1

When is an object contaminated?

Answer 1

If it contains radioactive nuclei, which will go on to decay and release ionising radiation

Question 2

What changes the way contaminated items are dealt with?

Answer 2

Amount of contamination present
Type of radiation emitted
The half life of the radioactive substance present

Question 3

What is irradiation?

Answer 3

The process of exposing an object to ionising radiation

Question 4

What irradiation can make an object radioactive?

Answer 4

Neutron only

Question 5

How can you minimise level of irradiation?

Answer 5

Minimise exposure time
Maximise distance from source
Use appropriate absorbers (shielding)

Question 6

What is an example of irradiation can be useful?

Answer 6

Gamma rays can be used to sterilise food and medical tools