ThorCon is Walkaway Safe
There is no need for any operator intervention. Not in 3 days, not in 300 days, not in 3000 days. Nor are there any valves that must be realigned by either system or operator control as in some so called passive systems. In fact there is nothing the operators can do to prevent the drain and cooling.
The 700C difference between ThorCon’s operating temperature (704C) and the fuelsalt’s boiling point (1430C) produces a robust safety margin.
ThorCon is Release Resistant
Moreover, the most troublesome fission products, including iodine-131, strontium-90 and cesium-137, are chemically bound to the salt. They will end up in the drain tank as well. Even if all the barriers are somehow breached, almost all these salt seekers will not disperse.
No Separate Spent-Fuel Storage
Multiple Decay Heat Cooling Paths
Four Loop Separation of Steam and Fuel Salt
- The primary fuel salt loop.
- The secondary fluoride salt loop.
- A solar salt loop. This is the same salt used in thermal solar plants.
- A high pressure steam loop.
The solar salt loop captures any tritium that has made it to the secondary loop, and more importantly ensures that a rupture in the steam generator creates no nasty chemicals and harmlessly vents to the Steam Generating Cell via an open standpipe.