From R’ Moshe Dovid Lebovits Kashrus administrator of the OK and a talmid of Rabbi Belsky.
Boiling three Eggs
People would have a separate egg pot or cook three eggs at a time so if one of them would have a blood spot, it would be butel b’rov and all the eggs would be permitted This is not necessary today, since the chance of finding a blood spot is very minimal since the eggs are not fertilized. Based on this, there is no reason to have a separate egg pot.