Fabrication and inspection development for Clinch River Breeder Reactor Plant steam generators

The Clinch River Breeder Reactor Plant steam generator that transfers the heat from the sodium system to the high-pressure system must maintain integrity and separation of the two fluids. The construction material used for the tubing and tubesheet is high-purity 21/4 Cr--1 Mo alloy steel. To attain confidence in successful manufacturing of the evaporator and superheater modules, key development activities are under way (a) to procure high-quality wrought materials, (b) to assure proper assembly (with emphasis on welding), and (c) to assure that adequate nondestructive testing methods are available to examine the units