ML042260232

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Catawba Hearing 07/14/04 - Staff Exhibit 4 (Official Exhibit #41), Excerpts from N. Waeckel Et Al., Slide Presentation, Does M5TM Balloon More than Zircaloy-4 Under LOCA Conditions? - Rec'D 07/14/04
ML042260232
Person / Time
Site: Catawba  Duke Energy icon.png
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

NUCLEAR REGULATORY COMMISSION IeFA-5 F303 Docket No. *O-~-][3/51H-oLIt In the matter of DuA!L -(

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Contractor DATE Other _ _ _ Witness

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Does M5Tm balloon more than Zircaloy-4 under LOCA conditions ?

Nicolas WAECKEL (EDF)

Jean-Paul MARDON (FRA-ANP)

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GC U- Laurence Portier (CEA) 0 IL o IL < U)

Anne Lesbros (EDF)

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Argonne SEGFSM LOCA Meeting May 27, 2004 -i EDF-CEA-FRAMATOME ANP NRC Staff Exhibit 4

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N 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 S 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

010 c

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