Ionising Radiation

Question 1

Types of Radiation

Answer 1

• Alpha (a)
• Beta (B)
• Gamma (y)
• X-ray (x)
• Neutron (n)

Question 2

What distance can an a-emitter travel and what can you use as shielding ?

Answer 2

1-2 cm

Dead skin cells / paper

Question 3

What distance can an B-emitter travel and what can you use as shielding ?

Answer 3

> 10 m

Thin plastic / metal

Question 4

What distance can an y-emitter travel and what can you use as shielding ?

Answer 4

> 100 m

Lead/thick concrete

Question 5

What distance can an x-ray travel and what can you use as shielding ?

Answer 5

> 100 m

Lead/thick concrete

Question 6

What distance can an a Neutron travel and what can you use as shielding ?

Answer 6

> 100 m

Question 7

What Equipment do we have to detect radiation?

Answer 7

• Rados RDS-200 survey meter
• EPD
• IdentiFINDER 2

Question 8

What kind of radiation does the Rados survey meter detect?

Answer 8

Detects

• gamma and x-ray
• With probe
• Detects beta, gamma and x-ray

Question 9

What kind of radiation does the EPD detect?

Answer 9

Detects gamma, x-ray and some beta

Question 10

What kind of radiation does the IdentiFINDER2 detect?

Answer 10

Detects gamma and x-ray

Question 11

What are the 3 alarms on the EPD?

Answer 11

Alarm 1
100 uSv/hr
Beep Beep

Alarm 2
5 mSv
Nee Naw

Alarm 3
100 mSv
Flat line

Question 12

What pieces of radiation Equipment are intrinsically safe?

Answer 12

None

Question 13

What unit of radiation measurement does the Rados use with the probe attached?

Answer 13

cps (counts per second)

kcps (kilo counts per second)

Question 14

What unit of radiation measurement does the Rados use without the probe attached?

Answer 14

uSv/h micro

mSv/h milli