Thorium Fuel Cycle Reaction Initiation

  • Thread starter DLHill
  • Start date
  • #1
32
0

Main Question or Discussion Point

In an liquid fluoride thorium reactor, how is the reaction started? My assumption would be a piece of fissile material would be somehow inserted into the fuel to introduce neutrons to the solution, but I have not found any information to show if this is how the reaction is started. If this is not it, how do the reactors begin breeding and fissioning the U 233?
 

Answers and Replies

  • #2
Astronuc
Staff Emeritus
Science Advisor
18,824
2,052
In an liquid fluoride thorium reactor, how is the reaction started? My assumption would be a piece of fissile material would be somehow inserted into the fuel to introduce neutrons to the solution, but I have not found any information to show if this is how the reaction is started. If this is not it, how do the reactors begin breeding and fissioning the U 233?
An LFTR would start with U-235 with U-233 increasing as it is produced in the system. U-233 would be chemically separated from the recirculating solution. Likely there would be 'neutron sources' placed in the reactor system.

One can look at the operation of the MSR at ORNL.
 
  • #3
QuantumPion
Science Advisor
Gold Member
902
42
The liquid fuel becomes critical as it flows through graphite moderator channels, sort of like an RBMK.
 

Related Threads on Thorium Fuel Cycle Reaction Initiation

Replies
12
Views
4K
  • Last Post
Replies
5
Views
4K
Replies
9
Views
2K
Replies
28
Views
11K
  • Last Post
Replies
3
Views
1K
Replies
1
Views
2K
Replies
2
Views
3K
  • Last Post
Replies
19
Views
13K
  • Last Post
Replies
3
Views
7K
  • Last Post
Replies
9
Views
2K
Top