ML042260232
| ML042260232 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 05/25/2004 |
| From: | Lesbros A, Mardon J, Portier L, Waeckel N Framatome ANP Richland, Govt of France |
| To: | Office of Nuclear Reactor Regulation |
| Byrdsong A T | |
| References | |
| 50-413-OLA, 50-414-OLA, ASLBP 03-815-03-OLA, Catawba-Staff-4, RAS 8303 | |
| Download: ML042260232 (3) | |
Text
IeFA-5 F303 NUCLEAR REGULATORY COMMISSION Docket No. *O-~-][3/51H-oLIt Official Exh. No.
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In the matter of DuA!
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Does M5Tm balloon more than Zircaloy-4 under LOCA conditions ?
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Jean-Paul MARDON (FRA-ANP)
Laurence Portier (CEA)
Anne Lesbros (EDF)
May 25-27, 2004 Argonne SEGFSM LOCA Meeting May 27, 2004 -i EDF-CEA-FRAMATOME ANP NRC Staff Exhibit 4
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BACKGROUND At the PHEBUS-STLOC meetings in Washington DC (Oct 2003) and Madrid (Nov 2003), IRSN asserted M5 cladding may exhibit bigger balloons than Zy4 under LOCA conditions
- Higher risk of flow blockage for M5 ?
IRSN's statement is based on isothermal creep tests performed on Nb based alloys (published by CEA, EDF and FRA-ANP in Toronto and Annecy ASTM Meetings)
- At high fluence with a low hydrogen content (150 ppm) M5 exhibits higher ductility than Zy4, with a higher hydrogen content (600ppm)
Argonne SEGFSM LOCA Meeting May 27, 2004 EDF-CEA-FRAMATOME ANP
Temperature ramps on as-received M5:
ductility Ductility decreases in the ramp test 180 160 140 m12X c
C 010 0
C 0;i80 60 40 -
20 -
0 J 550 650 750 850 950 1050 1150 Rupture Temperature (IC)
Argonne SEGFSM LOCA Meeting May27, 2004-iCA EDF-CEA-FRAMATOME ANP