ML20052E719

Updated LER 82-002/03X-1:on 820107,during Refueling Outage, Outboard MSIVs 3-203-2B & 3-203-2D Showed Leakages at Rates in Excess of Tech Specs.Caused by Packing Leakage.Valve Stem leak-off Lines Isolated & Packing Tightened

ML20052E719
Person / Time
Site:	Dresden
Issue date:	04/17/1982
From:	Rowley E COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20052E715	List: ML20052E714 ML20052E719
References
LER-82-002-03X, LER-82-2-3X, NUDOCS 8205110379
Download: ML20052E719 (4)

Text

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REPORT oATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l o 12 l lDuring refueling outage, while local leak rate testing per DTS-250-1, it was determined I g lthat the outboard MSIV's 3-203-2B and 3-203-2D showed leakages at rates of 49.15 and 30.80l

oj,; lSCFH respectively, in excess of 11.5 SCFH, the limit given in Tech. Spec. 4.7.g.2.C. Thisl l o i s I levent had minimal effect on public safety since there was no leakage from the respective l l o 16 l l inboard isolation valves. Similar occurrence reported by R.O. 81-08 on Docket 50-237. l 10171I I i o la l l_ l 7 8 9 80 SoTE YoE su$$$5E ccMPoNENT CODE SUS c'e'E SU E lo191 7 8 l Cl D l@ ]@ W@ l Vj Al L lV lE lX l@ g@ lD l@

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'4EOuGNTIAL OCCURRENCE REPORT REVISloN LER EVENT YEAR REPoMT No. CooE TYPE No O asg/Ro su 18 12 l l_l l 0l 0; 2; ;fl l0 l3 l lxl g l1 l 21 22 23 24 28 27 25 29 30 31 32

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40 el 42 43 44 CAUSE CESCRIPTION AND CORRECTIVE ACTICNS h I i i o l l The cause for each occurrence was packing leakage. The valve stem leak-off lines were I l3 ,ij l isolated and the packing tightened. The MSIV's retested satisfactorily with a final l l leakage of zero SCFH. l 11 111 l l li141 l l 7 8 3 80

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UPDATE REPORT l DE M TION REPORT PREVIOUS REPORT DATE: 2/2/82 O Commonwealth Edison PART fl T I TL E O F DEVIATION V" *-

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STA 3 - 82 UNIT YEAR 2

NO.

OCCURRED Excessive Leakage Through The "B" Outboard MSIV 1-7-82 0800 CATF Y t 'M SY S TEM AFFECTED 203 PLANT STATUS AT TIME OF EVENT TESTING Main Steam uOoE ShuEdowp pwRauwf 3 0 , LO,oiuAE, 0 0 DESCRIPTION OF EVENT While performing a local leak rate test per DTS 250-1, MSIV 3-203-28-was found to be leaking at a rate of 49.15 SCFH in excess of the 11.5 SCFH limit per Tech.

Spec. 4.7.g.2.c. The valve will be retested following repairs by Mechanical Maintenance.

10 CFR50. 72 NRC RED PHONE O O NO TIFIC ATION MADE YES NO EQUIPMENT FAILURE 17975 OYrs O NO Aoa< REOUFsi NO. RrsPONsinLE sUPFRvis0R M bd" nATE 1NM PART 2 l 0PE RA TI NG ENGINE ER' S COMMENTS This failure exceeded the single MSIV leakage limit.

Indications are that the inboard valve is not leaking, ie., small or zero through-leakage.

The official retest will be performed with Rx water level below the steam lines.

O EVENT OF PU BL I C INTEREST 24. HOUR NRC NOTI F ICATI ON REQ'D O TECN. Secc. <lOLATiON TELEPH Tom Tongue (courtesy) 1/11/82 1030 REGION III OATE TIME NON REPOR TABLE OCCURRENCE T EL E CM / TEL ECOPY f4 DAY RE PO R T A BL E / T. S . REGION lli OATE TIME 30 DAY REPOR TA BLE / T. S6. 6. B . 2. d .

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] ANNUAL /SPECL REPOR T REQ'O IF ABO <C NOTIFICATION IS PER 10CFR21 A.I.R. "

5-DAY ARITTEN REPORT REQ'D PER IOCFR21 t.E.R. 82-02/03X-1 F. A. Palmer 1/11/82 1159 TELEPH CECO CORPORA TE OTFICER DATE TIME PRELIMINARY REPORT Michael Wright 1/11/82 CCMPL E TED AND REV IE*ED 37, ,ggg ,y INSESTI GATED REPOR T S RE 5OLUTION

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ACCEPTED 8Y STATION REVIEW .) _U '

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4MWAJ R E SOL U T I CN APPROVED AND AUTHORilED FOR DISTRIBUTION ~

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UPDATE REPORT i DEVIATION REPORT PREVIOUS REPORT DATE: 2/2/82 Commonwealth Edison DVR NO. 12 - 3 - 82 - 9 STA UNIT YEAR NO.

PART 1l TITLE OF DEVI ATION OCCURRED Failure of the 3-203-2D to Pass LLRT 1/20/82 1400 SYSTEM AFFECTED 203 PLANT STATUS AT TIME OF EVENT TESTING Main Steam uGDE Shutdown ,p.ntu 73 0 0

, to,ogy g3 vf CESCRIPTION OF EVENT While local leak rate testing per DTS 250-1. MSIV 3-203-2D was found to be leaking at a rate of 30.80 SCFH which is in excess of the 11.5 SCFH limit per Tech.

Spec. 4.7.g.2.c.

10 CFR50.72 NRC RED PHONE O 0 NOTIF ICATION MADE YES NO E QU I PMENT F A I LURE ------

OYES NO WORK REOUEST NO. RESPONSIBLE SUPERVISOR Edward Rowley oarg WUM PART 2 l 0PERATI NG ENGINEER'S C0hWENTS The leakage will be reduced to less than the Tech. Spec.

limit prior to Rx startup from refueling.

O EVENT OF PusLiC IN TEREST 24. HOUR NRC NOTiriCATiON REO D TECH. SPEC. VIOLATION TELEPH Tom Tongue (courtesy) 1/25/82 0930 REGION lli DATE TIME O NON REe0aTAeLE OCCURRENCE TELECM/ TEL ECOPY  !

OlA oAv aEP0aTABLE/T.S. aEGiON iii DATE TiuE E 30 DAY R EP O R TA BL E / T. S Ceco CORPORATE NOTIFICATION MADE h ANNUAL /SPECL REPORT REQ'O IF ABOVE NOTIFICATION IS PER 10CFR28 A.I.R. e C 5-DAY WRI TTEN REPORT REQ'D PER 10CFR21 L.E.R. e TELEPH F. A. Palmer 1/25/82 1505 Combined with 82-02/03X-1 CECO CORPORATE OFFICER DATE TIME DVR 12-3-82-2 PRELIMINARY REPORT Michael Wright 1/25/82 COMPLETED AND REVIEWED UFERAilNG ENGINEER D A TE , p p a, .

INNESTIGATED REPORT & RESOLUTICN ACCEPTED BY STA T I ON REVIEA imm.u m f[f I (/ ///

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SUPPLEMENT TO DVR OVR NO. '

STA UillT. YEAR NO.

D- 12 - 3 - 82 2 PART I ITITLE OF EVENT OCCURRED Excessive Leakage Through the "B" & "D" MSIV's 1/7/82 0800 REASON FOR SUPPLEMENTAL REPORT The leak rate for the "D" MSIV was misquoted and the leak rate for the "B" MSIV was not given; nor were the respective Tech. Spec. references efven.

PART 2 l ACCEPTANCE BY STATION REVIEW w // /

DATE YZ3ff2.- hWe@

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SUPPLEMENTAL REPORT APPROVED AllD AUTHORIZED FOR DISTRIBUT10ft 87//4 Ae [IA /[/

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