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

Patent · Tue Jan 01 00:00:00 EST 1980

OSTI ID:863679

Caputo, Anthony J ^[1]; Costanzo, Dante A ^[2]; Layton, Frank L ^[3]; Stinton, David P ^[1]

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1. Knoxville, TN
2. Oak Ridge, TN
3. Clinton, TN

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 SiCl.sub.4 leaving carbon as a porous layer. This porous carbon layer is easily detected by the radiography.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4227081
• OSTI ID: 863679
• Country of Publication: United States
• Language: English

Related Subjects

method
evaluating
integrity
outer
carbon
layer
triso-coated
reactor
fuel
particles
relates
determining
defective
final
layers
samples
subjected
temperature
treatment
gaseous
chlorine
thereafter
radiographed
penetrates
reacts
underlying
silicon
carbide
resulting
volatilization
sicl
leaving
porous
easily
detected
radiography
porous carbon
porous layer
silicon carbide
reactor fuel
carbon layer
fuel particles
fuel particle
easily detected
temperature treatment
/250/376/378/976/