SYMPOSIA PAPER Published: 01 January 2001
STP10552S

Irradiation Creep Deformation of Modified 316 and 15Cr-20Ni Base Austenitic Fuel Elements Irradiated in FFTF

Source

Irradiation creep of modified 316 (PNC316) and 15Cr-20Ni base austenitic stainless steels was determined using the diametral change of the fuel pins, which were irradiated under the fission gas pressurized condition in FFTF to a peak displacement damage of 107 dpa in PNC316 and 120 dpa in 15Cr-20Ni base. The creep compliance B0 and creep-swelling coupling coefficient D were found to be 1.1 to 3.0 × 10-6 MPa-1 dpa-1 and up to 1.3 × 10-2 MPa-1 for instantaneous volumetric swelling rate, respectively. Those are almost the same level as those derived using the pressurized tubes irradiated in FFTF-MOTA. D values tend to decrease and disappear with developing void swelling.

Author Information

Uehira, A
Japan Nuclear Cycle Development Institute, Ibaraki, Japan
Ukai, S
Japan Nuclear Cycle Development Institute, Ibaraki, Japan
Mizuta, S
Japan Nuclear Cycle Development Institute, Ibaraki, Japan
Puigh, RJ
Pacific Northwest National Laboratory, Richland, WA
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Details
Developed by Committee: E10
Pages: 487–499
DOI: 10.1520/STP10552S
ISBN-EB: 978-0-8031-5454-4
ISBN-13: 978-0-8031-2878-1