Dimensional changes in FFTF (Fast Flux Test Facility) austenitic cladding and ducts

Conference · Thu Nov 01 04:00:00 EST 1990

OSTI ID:6345334

Makenas, B J; Chastain, S A; Gneiting, B C

As the standard cladding and duct material for the Fast Flux Test Facility driver fuel, 20% cold-worked 316 stainless steel has provided good service up to a fast fluence of 16 {times} 10{sup 22} n/cm{sup 2} in extreme cases. The titanium-stabilized variant of 316 SS, called D9, has extended the useful life of the austenitic alloys by increasing the incubation fluence necessary for the onset of volumetric swelling. Duct flat-to-flat, length and bow, pin bundle distortion, fuel pin diameter and length, as well as cladding volumetric swelling have been examined for high fluence components representing both alloys. These data emphasize the importance of the swelling process, the superiority of D9, and the interrelation between deformations in the duct, bundle, and individual pins. 8 refs., 10 figs.

• Research Organization: Westinghouse Hanford Co., Richland, WA (USA)
• Sponsoring Organization: DOE/NE
• DOE Contract Number: AC06-87RL10930
• OSTI ID: 6345334
• Report Number(s): WHC-SA-0933; CONF-901101--63; ON: DE91004556
• Country of Publication: United States
• Language: English

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ALLOY-D-9
ALLOYS
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HIGH ALLOY STEELS
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MOLYBDENUM ALLOYS
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