Nuclear Lifecycle 4

In the dry fuel fabrication process, what is UF6 reacted with to produce UO2?

• oxygen
• hydrogen and steam

• nitrogen
• water

Which statement is FALSE about the wet process for fuel fabrication?

• It produces more waste

• It is more complex

• There is greater flexibility in UO2 powder properties

• It is produces UO3

Put the stages of nuclear fuel pellet manufacture in the correct order

• Sintered

• Powder is homogenised and additives are added

• Machined to exact dimensions

• Pressed into pellet form under high pressure

What properties must fuel cladding have?

• Resistant to corrosion

• Neutron absorber

• Good thermal properties

• Good mechanical properties

Why must hafnium be removed from zirconium before it can be used as fuel cladding?

• It is too expensive

• It is radioactive

• It is a neutron absorber

• It is corrosive

Which types of fuel can be used in fast reactors?

• MOX

• oxide

• metallic

• carbides and nitrides

What type of reactors are pebble bed reactors?

• High Temperature Reactor

• Pressurised Water Reactor

• Boiling Water Reactor

• Advanced Gas Cooled Reactor

What enrichment level is HALEU fuel?

• 1% to 5% U-235
• 20% to 30% U-235
• 30% to 50% U-235
• 5% to 20% U-235

Which of these is NOT an accident tolerant fuel under development?

• Chromia doped fuel pellets

• U-Mo alloy fuel

• U3Si2 pellets

• UB3 pellets

Which reactors plan to use Th fuel in the future?

• VVER

• HTR

• PHWR/CANDU

• PWR