Apparatuses for steam separation, and nuclear boiling water reactors including the same

A steam separation system comprising:

• a steam separator;
• and
• an elbow extension attached to the steam separator,
• the elbow extension including a tubular structure that defines an extension channel within the tubular structure,
• the elbow extension configured to receive a two-phase flow stream (FS) of water and steam from the steam separator, separate at least some water from the two-phase FS, and pass the separated at least some water through the extension channel and out of an exit portion of the elbow extension,
• wherein the tubular structure includes a curved section, and
• wherein a surface of the curved section of the tubular structure defines a plurality of extraction holes configured to pass moisture-reduced steam out of the elbow extension by passing the moisture-reduced steam from the portion of the extension channel within the curved section of the tubing structure to an exterior of the tubular structure.