No. Reinsurance covers a variety of risks. There are certain risks the insurers are unwilling to cover but for which the act provides compensation. That's one form of reinsurance.
There is the reinsurance associated with small facilities such as university research reactors, for which the government accepts a certain amount of liability.
Finally, there would be the reinsurance associated with amounts over and above $650 million should those ever be required in the event of an incident.
The expectation would be that payments of any of those forms would be made out of that nuclear liability reinsurance account.