IRR99 for Radiotherapy Flashcards Preview

Y3: Radiation Safety in Radiotherapy > IRR99 for Radiotherapy > Flashcards

Flashcards in IRR99 for Radiotherapy Deck (12)
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1

What do Local Rules have to include?

The name and contact details of the RPS.
The location and boundaries of the controlled area.
The type of radiation present.
Dose investigation levels.
Contingency plans.
Access to the controlled area/systems of work.

2

What are the principles of a risk assessment?

To identify hazards (a permanent risk), and determine the risk associated with it (how likely something will occur), and then to put in controls (to minimise the chances of the risk occurring). After the controls are in place, determine what the residual risk is, and see if it can be further reduced.

3

What does IRR99 regulation 7 describe?

The requirement for a risk assessment prior to any work with ionising radiation. This assessment must include the hazards and magnitude of risks to any staff and other persons (not patients) working with the radiation.

4

Who is a classified worker?

Anyone receiving over 3/10 of a dose limit.

5

What is the effective dose limit for employees?

20 mSv

6

What is the equivalent dose limit to the lens of the eye for employees?

150 mSv (will be 20 mSv from Jan 18)

7

What is the equivalent dose limit to the skin for employees?

500 mSv

8

What is the equivalent dose limit to the extremities for employees?

500 mSv

9

What is the effective dose classification level for employees?

6 mSv

10

What is the equivalent dose classification level to the lens of the eye for employees?

15 mSv (this is not 3/10 as this would be lower than a MoP limit)

11

What is the equivalent dose classification level to the extremities for employees?

150 mSv

12

What is the equivalent dose classification level to the skin for employees?

150 mSv