Method of evaluating the integrity of the outer carbon layer of triso-coated reactor fuel particles

Patent · Tue Oct 07 00:00:00 EDT 1980

OSTI ID:6566667

Caputo, A J; Costanzo, D A; Lackey, W J; Layton, F L; Stinton, D P

This invention relates to a method for determining defective final layers of carbon on triso-coated fuel particles and the like. Samples of the particles are subjected to a high temperature treatment with gaseous chlorine and thereafter radiographed. The chlorine penetrates through any defective carbon layer and reacts with the underlying silicon carbide resulting in the volatilization of the silicon as sicl4 leaving carbon as a porous layer. This porous carbon layer is easily detected by the radiography.

• Assignee: Department of Energy
• Patent Number(s): US 4227081
• OSTI ID: 6566667
• Resource Relation: Patent File Date: Filed date 13 Jun 1979; Other Information: PAT-APPL-048290
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
36 MATERIALS SCIENCE
CARBON
INDUSTRIAL RADIOGRAPHY
COATED FUEL PARTICLES
CHLORINE
HEAT TREATMENTS
ELEMENTS
FUEL PARTICLES
HALOGENS
NONMETALS
050700* - Nuclear Fuels- Fuels Production & Properties
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication