ML20148T322
| ML20148T322 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/04/1981 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-81-360-000 10CFR-050.55E, 10CFR-50.55E, PT21-81-360, PT21-81-360-000, SQRD-50-328-81, NUDOCS 8102250541 | |
| Download: ML20148T322 (1) | |
Text
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(J DATE 0: ETTER.
tk6 DIKET NO.
E=. rte DATE DISTRIBlffED Eulm e.m.
_ ORIGlt@L REPORTy Sil?PLEENTARJ DISTRIBtfTION:
REACTOR (R)l.
FLEL CYCE 8 SAEC4MRDS (S) y
" iE FIES "
[MTERIALS(f0 1E FILES EES IEFILES AD/SG AD/FFFSI AD/ROI EGIEG I.,II,Ill.,IV,V REGIONSI,II,III.,IV,V REGIONSI,II,III,IV,V V503R BR, R-IV VEfEOR BR, R-IV yBiDDR BR R IV LEB / IPA l4G 5715 fi'ES / FGS SS-395 NPWDOL AEOD f4G 7602 LDEB / IPA l,4G 5715 itBS / SG SS-881 NRR/IIE a
liG 7632 LEB / IPA fig 5715 NPP/DSI ASLB? E/d 450 AEOD f4G 7602 MT t
SAP /SP tiG-7210A ASLBP E/W 450 -
i NPNIXF CENTRAL FIES 016 ENTRAL FILES 016 ASLBF E/W 450 CBiTRAL FIES ( GRD:0 CBffRAL FIES (CHRGO CSfTRALFILES 016 FDR CENTPAL FIES SS-396 CB(iRAL FIES (CHR0fD LPDR PDR PDR
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o PRELIMINARY EVALUATION OF THE' ATTA 7RgppdICATES LEAD RESPONSIBILITf FOR FOLLOWJP AS SK)hN BELOW:
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NRR ffSS2 GiHER fi EES 8102250Y \\
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TENNESSEE VALLEY AUTHORITY CH ATTANOOG A, TENNESSEE 374ot l
400 Chest a t Street Tower II i
1 February 4, 1981 1
1 SQRD-50-328/81-11 i
Mr. Ja2nes P. O' eilly, Director i
Office of Inspection and Enforcement U.S. Nuclear Regulalory Co==ission Region II - Suite 3100
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s 101 Marietta Street Atlanta, Georgia 30303
Dear Mr. O'Reilly:
i SEQUDYAE NUCLEAR PLAhT UNIT 2 - STPESS CORF.0SION CFACl2NG IN TUBING ON THE REACTOR C30LAhT FUMP OIL COOLERS - SOF.D-50-328/81 SECOND INTERIM REPORT The s':bject deficiency was initially reported to NRC-0IE Inspector i
R. W. Wright en December 2, 1980, 'in accordar.ce with 10 CFR 50.55(e) as NCR SQN EE 8025. An interic report ns sub=.itted on January 2, 1981.
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We expect to subtit our next report by March 27, 1961.
We consider 10 CFR g applicable to this deficiency.
TVA has received and is evaluating the quotatics frc: Wes:inrf.ouse for replacing the unit 2 reactor coolant pump lubrication oil a aler tubing with 90-10 copper-nickel.
TVA is also investigating the idem of plugging the oil cooler tubes which leal:.
This would be acceptable in view of the fact that hydra::ine, which as used as the ec:penent cooling system water treatment, has been ree ved fro: the sysne:.
A=:enia, which resulted frc:
the deco positien of hydrazine, in conjuncticn with residual P.nd operating i
stresses, caused the stress corrosion crack:ing.
If you have any questions concerning this catter, please Eet in t.uch with D. L. Lt.=bert at FTS 857-2561.
Very truly yours, TENESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear F.egulation and Safety Mr. Victor Stello, Jr., Director /
cc:
Office of Inspection and Enforcement U.S. Nuclear Regulatory Co==ission Washington, DC 20555
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