ML17173A453

Forwards LER#78-064/03L-0

ML17173A453
Person / Time
Site:	Dresden
Issue date:	12/21/1978
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17173A456	List: ML17173A453 ML20027A578
References
78-1637, NUDOCS 7812290210
Download: ML17173A453 (3)

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Commonwealth Edison R.R. #1 Morris, e

Dresden Nuclear Power Station Illinois 60450 Telephone 815/942-2920

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December 21, 1978 BBS LTR #78-1637 James G. Keppler, Regional Director Directorate of Regulatory Operations - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Reportable Occurrence Report 1178-064/031-0, Docket #050-237 is hereby submitted to your office in accordance with Dresden Nuclear Power Station Technical Specificaticn 6.6.B.2.(d), abnormal degradation of systems other than those specified in item B.l.e.designed to contain radioactive material resulting from the fission process *.

BBS/deb Enclosure cc: *Director of Inspection & Enforcement

• Director of Management Information & Program Control File/NRG

REGULATORY DOCKET FJLE COPY

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LICE~JSE-E EVErJI REPORT CONTROL BLOCK: (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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• 68 69

• EVENT DATE. 74 75 . REPORT DATE BO EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

!During routine inspection in the 2/3 Radwaste basement, a leak was found in the

!Im 16" X 6" X 4" eductor on the 2/3 waste collector tank recirculation line (2/3-20150-4")4

[QJI] !Safety significance minimal since all leakage contained in Radwaste floor drain systemJ

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7 8 9 80 SYSTE~1 CAUSE

• CAUSE COMP. V~.LV=

CODE CODE SU9COOE co.*.:PONENT CODE SUBCODE SUBCODE 021 7 B IM IA I@ UJ@ LPJ@ 1p1r1 p 1E1x1x1e 9 10 11 12 13 18 w w@

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SEQUENTIAL OCCUR REi'iCE REFORT REVISION

(,:;\ LER*RO c~VEMTYEft.R REPORTNO. CODE TYPE NO.

IV' :i~~~; I 1 I sI I I .l o I 6 I 4 I I /I Io I 3 J LlJ - I I LQJ 21 22 23 24 26 27 28 29 30 31 32 ACTIOIJ FUTURE EFFECT SHUTDOWN ~ ATTACHMENT NPRD-4 PRIME C0\1P. COMPO.'l!ENT T,O.KE!-l ACTIO:~ O~JPLANT MET!-iOD HOURS SUBMITTED FORM SUB. SUPPLIER MA;*UFACTURER Ll.J@lLJ@ ~@ ~.Io I 01 01 01 W@ Li(§ *LJLJ@ I GI 0  ! 8 I 047I 33 34 . 35 36 . 37 40 41 42 43 44 .

CAUS:: DESC~IPTIOi\J AND CORRECTIVE ACTIONS @

!Probable cause-acid COLrosion of the carbon steel side of weld. Leak repaired by pad ITIIJ 1welding. The carbon steel* flange will be replaced with one made of stainless steel , *I o:JJJ 1which is not susceptible to corrosion from dilute acid.

ITITI 7 8 9 80 FACILITY

• IJQ\ METHOD OF * . ~

STATUS  % PO'NER OTHER STATUS ~ DISCOVERY .. O.ISCOVERY OESCRl?TION '2V CU}]*. l.]_J@ I 0 I 9 1* 7  !@!,__*'""""NA_ _ _ __.J

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RELEASED OF RELEASE Al\-;OUNT OF ACTIVITY. '2_V LOCATION OF RELEASE @

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ISSu~*oG\ D_ESCRIPTION ~-. . . NRC USE ONLY

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• NO.STA UNIT YEAR Commonwealth Edison NO.

D- 12-2/3 123 PARTl[TITLE OF DEVIATION OCCURRED

--2/.3-R . .W.* -Wast_e-Gol-lec.-~or-reci-rc-line-leak-------------------- --1T/T4778__._0_Tff0~

-- .DATE TIME SYSTEM AFFECTED PLANT, CONDITIONS TESTING 2000 CJ OCT 2/3 Rad Waste MODE N/A PWRfMWT) N/A , LOAD(MWE) N/A YES NO DESCRIPTION OF. EVENT While making routine inspection of pumps in 2/3 RW basement the waste collector recirc line was found to have pinhole leaks on a 3" reducer flange.

DESCRIPTION OF GAUSE Water erosion on the inside of reducer

.. OTHER. APPL I CABLE INFORMATION W.R. No. 9199 was submitted, use of WC pump kept to a minimum and replacement of piping put on priority as soon as feasible.

EQUIPMENT Ll[] YES DR NO. WR NO.

FAILURE CJ NO NA 9199 Larry Larsen 11/24/78

_ RESPONSIBLE SUPERVISOR .DATE PART 2 I OP ER AT I NG ENGINEERS COMMENTS All leakage contained within normal plant drain systems.

SAFETY-*

TYPE OF DEVIATiON EVENT OF POTENTIAL TECH SPEC NON-REPORTABLE ANNUAL RELATED REPORTABLE OCCURRENCE PUBLIC INTEREST VIOLATION

• OCCURRENCE REPORTING WR ISSUED D 14 DAY D 10CFR21 YES~ YES D

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LXJ 30 DAY NOTI Fl CATIQN 6.6.B.2.(dJ D D D .No*O NO ~

REPORTABLE OCCURRENCE ACTION ITEM NO. PROMPT ON-SITE NOTIFICATION NUMBER

,.-- A. Roberts Asst. Supt. 11/28/78 . 1500 Tl TLE. DATE TIME

~ 78 - 64 - 03L-0 NA NA TITLE DATE TIME 24-HOUR NRC NOTIFICATION PROMPT OFF-SITE NOTIFICATION DTPH NA F. Palmer 11/28/78 4:20 REGION I I I DATE TIME Tl TLE DATE .TIME DTGM NA J. 11/28/78 4:20 REGION I I I & DOL CATE TIME. .DATE TIME RESPONSIBLE COMPANY OFFICER INFORMED OF IOCFR21 C NDITIONS AND THEIR REPORT TO C DATE TIME

.ll/28/}8_

DATE ACCEPTANCE BY STATION AS REQUIRED DATE RESOLUTION APPROVED AND AUTHORIZED FOR DISTRIBUTION

.. 86-5176 10-77 !_FORM 15-52* t) ....

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