NUCLEAR

Question 1

Mass and charge of all contents in an atom.

Answer 1

Proton - m=1amu Q=1e
Neutron - m=1amu Q=0
Electron - m=0.0005amu Q=-1e
u=1amu = 1.66E-27kg
1e = 1.6E-19C

Question 2

Atomic weight of Deuterium and Tritium

Answer 2

D=2.014
T=3.016

Question 3

What effect does a beta (jared) emission have on an Atomic number?

Answer 3

Increases it by 1.

Question 4

Calculate the shielding strength (Jdawg choose numbers for wall thickness(t), linear absorption(u), impinging intensity (Io).

Answer 4

I(x)=Io exp(-ut)

Question 5

What shield must be used to; moderate (thermalise) neutrons, capture neutrons and minimise secondary gamma radiation.

Answer 5

To thermalise- Water, Carbon
To capture neutrons- boron, cadium
To minimise gamma- Heavy metals (lead)

Question 6

What are the 4 types of nuclear reactors and their operating conditions?

Answer 6

Pressurised Water Reactors - P=10215MPa T=300C
AREVA/UK EPR - 1650MWe
Boiling Water Reactor
Advanced gas-cooled reactor - graphite moderator (shield)

Question 7

Disadvantages of Nuclear electricity generation

Answer 7

Safety (operation, accidents, waste)
Financial risk (capital cost)

Question 8

Advantages of Nuclear electricity generation

Answer 8

Cheap (same price as coal)
Does not emit smoke/co2
Large amounts of energy from small amount of fuel
Small amounts of waste
Can be used as base load