ML20205J659

Summary of 990318 Meeting with Union Electric & Framatome Technologies Re Electrosleeve Amend Application for Callaway Npp.List of Telcon Participants & Union Electric Fax with Callaway Probability Info Encl

ML20205J659
Person / Time
Site:	Callaway
Issue date:	04/06/1999
From:	Mel Gray NRC (Affiliation Not Assigned)
To:	NRC (Affiliation Not Assigned)
References
TAC-MA3954, NUDOCS 9904120134
Download: ML20205J659 (7)

Text

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g t UNITED STATE 8 l

g } NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20086 0001 l

• • • • • April 6, 1999 l

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! MEMORANDUM TO: FILE FROM: Mel Gray, Project Manager he/r '

Section IV-2 Project Directorate IV & Decommissioning Division of Licensing Project Management  !

Office of Nuclear Reactor Regulation l

SUBJECT:

RECORD OF TELECON WITH UNION ELECTRIC AND FRAMATOME i TECHNOLOGIES, INC. PERSONNEL REGARDING ELECTROSLEEVE '

AMENDMENT APPLICATION FOR CALLAWAY PLANT, UNIT 1 (TAC  ;

NO. MA3954) '

REFERENCES:

'(1) License Amendment Application, UE Letter ULNRC-03910, dated October 27,1998

)

(2) FTl Proprietary Presentation Material from July 2,1996 meeting, ,

submitted to NRC in FTl letter JHT/96-45, Attachment 7, from '

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J. H. Taylor to K. M. Thomas, dated July 18,1996 j The NRC staff is completing its review of the Union Electric (UE) amendment application that requests approval to install the electrosleeve steam generator tube repair in Callaway Plant,  ;

Unit 1 (Reference 1). The electrosleeve tube repair was developed by Framatome Technologies Inc. (FTI). Personnel that participated in the telecon on March 18,1999, are

. listed in Attachment 1.

During the telecon, FTl personnel discussed the electrosleeve strength data at elevated temperatures provided in Reference 2. FTl personnel described the temperature profile time history for each sample to ensure the staff and UE personnel have a common understanding of i

' this information.

, Considering that the strength data available indicates electrosleeve material strength will l decrease significantly at high temperature severe accident conditions, the staff is evaluating the

l. capability of the repaired steam generator parent tube and installed electrosleeve to maintain integrity during severe accident conditions.- The staff described their in progress evaluations to FTl and UE personnel. FT! personnel indicated that they are preparing a white paper to

- describe their understanding of the behavior of electrosleeve repaired tubes during severe i accident conditions. The white paper information would be more qualitative in nature compared i to the staff's ongoing quantitative evaluation. FTl and UE personnel agreed that FTl will )

provide the white paper to the NRC staff. -

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A second telecon was held later on March 18,1998, with NRC and UE persennel. Attachment  !

1 list: the participants. UE personnel faxed an evaluation of the Callaway plant specific  !

probability of scenarios that could cause severe accident corditions la the steam generator )

tubes. This fax was discussed during the second telecon and is enclosed as Attachtnent 2. l l The staff is considering this probability data in the ongoing review of the amendment

! application.

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Attachments: 1. List of Telecon Participants

2. Fax from UE of Callaway Probability information l

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April 6, 1999 A second telecon was held later on March 18,1998, with NRC and UE personnel. Attachment i lists the participants. UE personnel faxed an evaluation of the Callaway plant specific probability of scenarios that could cause severe accident conditions in the steam generator tubes. This fax was discussed during the second telecon and is enclosed as Attachment 2.

The staff is considering this probability data in the ongoing review of the amendment application.

Attachments: 1. List of Telecon Participants

2. Fax from UE of Callaway Probability Information DISTRIBUTION:

iDocketfNeilf PUBLIC PlV Reading BSheron SRichards SDembek MGray EMurphy EPeyton CBeardslee JStrosnider PRush JMuscara EHackett SLong OGC.

ACRS KBrockman, Region IV LYandell, Region IV DOCUMENT NAME: MTFA3954.WPD OFC PDIV/PM PDIV/LA PDIV/SC NRR:EMCB NAME Mir EPIho'r SDembek d_ '-"rp.y 7~L ' /; ,,

DATE 3/ 27 /99 38 G99 / [/99 / k /99 OFFICIAL RECORD COPY f i

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l ATTACHMENT 1 l

l LIST OF TELECON PARTICIPANTS March 18,1999,1:00 PM (eastern time)

Union Electric Comoany D. Shafer l T. Herrmann Framatome Technoloaies J. Galford J. Fleck '

G. Bean E

M. Gray C. Beardslee E. Murphy E. Hackett l J. Muscara S.Long March 18,1999,2:30 PM (eastern time)

Union Electric Comoany D. Shafer.

K. Connelly M. Wahls E

M. Gray S.Long l

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1 ATTACHMENT 2 1 1

FAX FROM UE OF t ALLAWAY PROBABILITY . AFORMATION l

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• c s with Losn of DHR (FW and F/B) l S(1)S05 6.25E-10 ,

, S(1)S10 1.83E-10 l

S(1)S11 0.00E+00 .

S(2)S10 0.00E+00 l S(2)S11 0.00E+00 l - S(2)S20 1.82E-10 l

S(3)SO4 1.23E-09 S(3)S05 .2.31 E-09 S(3)S12 4.95E-08 -

T(1)S03 5.36E 08 3.11E48 is frequency of sequences with Lt. SP.

T(1)SO4 1.69E-06 T(1)S05 7.51E-08 j T(1S)S22 1.03E-08 0.68 conditional prob that loss of DHP. is LOSP-initiated. i T(1S)S23 1.36E-07 l T(1S)S24 5.SiE-08 0.32 conditional prob that loss of DHR is not LOSP-initiated.

T(1S)S25 1.22E-08 T(15)S26 2.75E i T(2)S03 5.69E-08 T(2)SO4 1.09E-07 T(2)S05 2.38E-08 T(3)SO4 5.84E-08 T(3)S05 1.34E-07 T(3)S06 3.43E-08 TAT 1S03 0.00E+00 P(FPinj) = 0.1 + [0.32(0.02) + 0.68(0.13)) = 9 dig, TAT 1512 0.00E+00 TAT 1S13 2.49E-10 F(D,)

• P(FPinj) = (4.58E-6) * (0.195) = IME ?_

TAT 1S22 0.00E+00 I TAT 1S23 1.05E-10 F(Dsm)

• P(FPinj)

• SF(Lseal) = (8.93E-7) * (0.5) = (E.gg, TAT 3503 1.27E 10 TAT 3S12 9.32E-10 .

TAT 3S13 1.23E-08 '

TAT 3S22 0.00E+00 TAT 3S23 5.21E-09 "TNK1S03 2.51E-08 TNK1504 4.71E-09 j i

TNK1S05 2.06E-07 l TNK4S03 2.02E-08 TNK4SO4 4.61E-09 TNK4505 3.76E-08 l

~T(SG)SM 1.48E-09 l T(SG)S21 2.39E-10 l

T(SG)S22 5.95E-10 ,

T(SG)S37 2.39E49

. T(SW)S19 4.16E 09 T(SW)S20 1.61 E-09 T(SW)S21 3.02E-08 T(SW)S22 8.43E-07 T(C)S15 0.00E+00 T(C)S16 0.00E400 T(C)S17 0.00E+00 T(C)S18 0.00E+00 T(C)S19 1.15E-10 Total: 4.58E48 c . .. , . - _ mm. .. .... _ _ . _ ___ _ _ _ . _. ,__