Nuclear Safety 7

How long should dose records be kept?

• 30 years or until the person is 75

• 30 years

• 25 years or until the person is 50

• Until the person is 65

How long should investigation reports be kept?

• 5 years

• 20 years

• 2 years

• 6 months

Which of these requires a contingency plan under REPPIR?

• A U sample of with an activity level of 50 Bq/g

• Fissile material in Type B transport packaging

• A non-dispersible educational source

• Waste which gives a dose of 5 mSv

What is the "worst case scenario" for the quantities of radioactive material in Schedule 1 of REPPIR?

• 100% release at ground level to members of the public at 100 m

• 150% release into the atmosphere to members of the public at 1 km

• 99% release at ground level to members of the public at 10 m

• 50% release into the atmosphere to members of the public at 50 m

What is the event likelihood over which it must be considered under REPPIR?

• 1/10000

• 1/20000

• 1/100000

• 1/1000

Match the description to the planning zone.

Groups:

(a) Detailed emergency

,

(b) Outline

• Know how many buses are available

• Know where there may be extra emergency responders

• People in the area must be given planning information

• People in the area should be able to access information

• Know approximately how many extra buses could be available

• Know how many emergency responders are available

Who needs to have emergency plans under REPPIR?

• Operator

• Local Authority

• Surrounding local businesses

• Members of the public living close by

Who must not be subjected to an emergency exposure?

• Workers under age 18

• Pregnant and breastfeeding employees

• Employees who do not want to receive an emergency exposure

• Employees who are not authorised to receive an emergency exposure

What is the maximum emergency exposure allowed on a contingency plan in a life-threatening situation?

• 100 mSv

• 1000 mSv

• 500 mSv

• 250 mSv

When should ONR be notified under a transport emergency plan?

• Theft of class 7 goods

• Attempted theft of class 7 goods

• An accident that caused radioactive material to leak from the packaging

• Normal, uneventful transport of class 7 goods