RRFM 2009 Transactions - European Nuclear Society

Dispersion fuel
Monolithic fuel
ATR core Section for metallography
at plate axial mid-plane
Fig. 1 Schematic of RERTR plate section for metallography.
Fig. 2 Micrograph of metallographic section (shown in Fig. 1) of monolithic miniplate
L1P04A, RERTR-9, position C6.
Fission density (10 21 f/cm 3 )
10
9
8
7
6
5
4
(a)
Fuel swelling (ΔV/V0)f, %
100
90
80
70
60
50
40
30
20
10
(b)
Plate thickness measurement locations
Datum used for correlation
Center
3
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Distance from the near-edge to ATR core (mm)
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Distance from core side fuel end, mm
Fig. 3 (a) Fission density profile at metallographic section of L1P04A calculated from
gamma scan data, (b) comparison of fuel swelling between measured data
and predictions for L1P04A (C6-RERTR9)
Fuel swelling (ΔV/V 0 )f, %
100
100
100
90 (a)
Measured 90 (b)
Measured
90 (C)
Measured
80
Predicted 80
Predicted 80
Predicted
70
70
70
60
60
60 A B
50
50
50
A B
40
40
40
30
30
30
20 B
20
20
A
10
10
10
0
0
0
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
Distance from ATR-core side foil end (mm)
Distance from ATR-core side foil end (mm)
Distance from ATR-core side foil end, mm
Fuel swelling (ΔV/V0)f, %
Fuel swelling (ΔV/V 0 )f, %
Fig. 4 Comparison of fuel swelling between measured and predicted.
(a) L1F040 (B7, RERTR-6, average FD=2.6x10 21 f/cm 3 ), (b) L1F140 (B7, RERTR-7,
average FD=5.2x10 21 f/ cm 3 ), (c) L1P05A (B3, RERTR-9, average FD=6.6x10 21 f/ cm 3 ).
162 of 455