In-service inspection techniques for liquid-metal-cooled fast breeder reactors

Although firm requirements have not yet been established in the United States for in-service inspection of liquid-metal-cooled fast breeder reactors, some initial development work on potentially applicable nondestructive testing methods has been conducted. The article describes preliminary investigations of several advanced nondestructive testing concepts for liquid-sodium systems. The methods highlighted for potential application are ultrasonics, eddy currents, electrothermal testing, under-sodium viewing, and radiography