Nuclear Engineering Principles 6

Where is most uranium mined?

• Australia

• Canada

• Kazakhstan

• Namibia

How is uranium extracted from its ore?

• Leaching with acid or alkali

• Electrolysis

• In a blast furnace

• It exists in natural metal form

What is the product from the conversion process?

• UO2

• UF6

• Enriched U

• UF4

Which part of the nuclear fuel cycle is the most energy intensive?

• Milling

• Conversion

• Enrichment

• Fuel fabrication

What is the typical enrichment level for light water reactor fuel?

• 1-2%

• 0.7%

• 4-5%

• 20%

What form is the fuel in for a pressurised water reactor?

• Natural, unenriched uranium

• UO2 pellets

• UF6 gas

• Uranium metal

Which statement is NOT true about fuel cladding?

• It must be a neutron absorber

• It must be resistant to irradiation

• It must be resistant to corrosion

• It must withstand high temperatures

What is the first step for spent nuclear fuel after it has been removed from a reactor?

• It is compacted or incinerated

• It is placed in a pond to cool

• It is vitrified

• It is reprocessed

Which of these is not valid reason for reprocessing spent nuclear fuel?

• It will prevent U supplies being exhausted

• It will reduce mining costs

• It can be reused as new fuel

• It poses a proliferation risk

Match the example of each type of waste to its classification

• VLLW

• Spent nuclear fuel

• LLW

• Contaminated gloves

• ILW

• Resins from reprocessing

• HLW

• Building materials