Safety aspects (AQA A-Level Physics): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
% of U- in enriched uranium (reactor-grade)
% of U- in enriched uranium (reactor-grade)
3-5%
% of U- in natural uranium
% of U- in natural uranium
About 99%
Role of U- in nuclear reactor
Role of U- in nuclear reactor
Absorbs fission neutrons, controls reaction rate, stabilizes reactor
Purpose of thick concrete shielding in reactors
Purpose of thick concrete shielding in reactors
Blocks radiation, protects workers
Function of control rods in emergency shut-down
Function of control rods in emergency shut-down
Absorb excess neutrons, halt fission reactions, prevent overheating
How long is high-level waste hazardous?
How long is high-level waste hazardous?
Thousands of years
Characteristic of low-level waste radioactivity
Characteristic of low-level waste radioactivity
Short-lived radioactivity
Purpose of cooling ponds for spent fuel rods
Purpose of cooling ponds for spent fuel rods
Allow heat to dissipate over time
What is vitrification?
What is vitrification?
Encasing waste in glass
Energy: 1 kg uranium equals how much coal?
Energy: 1 kg uranium equals how much coal?
25 tonnes