STEAM GENERATOR FOR THE SODIUM COOLED FAST REACTOR WITH AN ON-LINE LEAK DETECTION SYSTEM

摘要

PURPOSE: A steam generator for a sodium cooling fast reactor with an on-line heat transfer tube leakage detecting function is provided to improve thermal transmission efficiency by a heat transfer tube with a dual wall structure. CONSTITUTION: An inner tube(151) is made of a first material. An outer tube(152) is closely adhered to the inner tube. The outer tube is made of a second material. The thermal expansion efficiency of the second material is smaller than the thermal expansion efficiency of the first material.