Section 56.50-45 - Circulating pumps(a) A main circulating pump and emergency means for circulating water through the main condenser must be provided. The emergency means may consist of a connection from an independent power pump fitted between the main circulating pump and the condenser.(b) Independent sea suctions must be provided for the main circulating and the emergency circulating pumps.(c) A cross connection between the circulating pumps in the case of multiple units will be acceptable in lieu of an independent power pump connection.