Well, you could scram a supercritical water reactor too. If there's an emergency that warrants scramming the reactor, the time it will need to restart should

Well, you could scram a supercritical water reactor too. If there's an emergency that warrants scramming the reactor, the time it will need to restart should be low on your list of priorities. As for refueling, in some designs like CANDU refueling can be done 'online', refueling one tube while the others are running.