[KitemanSA]

"The Thorium fuel produces U232..." Yup, which is one of its nicest features. It means that the U233 is unlikely to be used for weapons. And since it never leaves the well shielded containment area in a LFTR, there is no hazard.

If the kettle is breached in the LFTR, the salt will probably just condense on any small break and seal it. If the break is large, the salt drains into a drain tank which is still in the shielded containment volume. No worries, mate! Oh, and since there is no significant pressure and no volatile chemicals like liquid sodium, there are no forces trying to disperse the materials. Inherently MUCH safer than any PWR or LMFR.