ML20011A547

LER 81-021/03L-0:on 810901,during Normal Unit Operation, Suspected Crack Found on Reactor Water Cleanup Line to Regenerative Heat Exchanger.Cause Unknown.Corrections & Repairs to Be Determined & Made When Time & Matl Available

ML20011A547
Person / Time
Site:	Dresden
Issue date:	09/28/1981
From:	Bergan G COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20011A542	List: ML20011A541 ML20011A547
References
LER-81-021-03L-02, LER-81-21-3L-2, NUDOCS 8110130542
Download: ML20011A547 (2)

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• LICENSEE EVENT REPORT

1. CONTROL BLOCX: l 1

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lh (PLEASE I"RINT OR TYPE ALL REQUIRED INFORMATION)

% l l Il L l D l R [ S l 143 lgl 0l 0l -l 0 l 0 l 0 l 0 l 0 l- l 0 l 0 gl4 l1 l1 gl l1 l l g 8 9 LICENSEE CODE 15 UCENSE NUMSER 25 26 LICENSE TYPE J0 57 CAT 58 _

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, 8 60 61 DOCKET NUMSER 68 69 EVENT DATE 74 75 REPCRT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

'o 12 l l During normal unit operation, while performing routine inspections, a suspecrud crack  ;

g,3, ;wasfoundonRxwatercleanupline(3-12013-6 inch-A)to3A-1203Aregen.heatexchanger.

g,,, g Suspected leak near nozzle to ht. ex. weld. Extent and nature undetermined at this g,3, y tim 3. Line is located outside primary containment and all leakage contained in Rx building floor drain system. The health and safety of the public was not endangered.

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1 lo,,i l First recorded instance of a problem at this pipe location. ,

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l 8 g 80 SOYE YO$E St5sCioE COMPONENT CODE SUS " 'E C S C E O l 9 l' lC l Gl@ lE l@ lB l@ l P lIl P lE lX lX l@ l Cl@ l Z l@

8 9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISloN LER EVEn4T YEAR R EPORT NO. CODE TYPE N

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_2n l8 l1 l 22 l_l 23 l0 l2 l1 l 24 26 jfl 27 l0 l3 l 28 29 lLl 00 l __l 31 l

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,l N C 0 P T METH HOURS 22 SB 1 FOR 8. MA UF RER .

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CAUSE DESCRIPTICN AND CORRECTIVE ACTIONS h i l Oj l The cause of the suspected pipe crack is undetermined. Regenerative heat exchanger l i lil l loop A has been isolated. Exact nature of the problem will be determined and repairs  ;

, ,,, l made when time and material availability permit. A supplemental report will be issued g

, ,3 g l following repair.  ;

1 4 41 l l 8 9 80 A  % POWER OTHER STATUS 04 O RY OtSCOVC"Y DESCRIPTION NA Operator Observation 9 l 5 l l Z l@ l 0 l 7 l 9 l@l l l B l@l l AbvtTY CO TENT rELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION CP RELEASE

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FERSCNNEL EXPOSURES NUMBER TYPE CESCRIPTION 9 l 7 ] l 0 l 0 l 0 l@j@l NA l PE' SONNE L INJU IES NUM8ER DESCRIPTION la8l 91010101@l12 11 NA l 90 LOSS OF OR OAMAGE TO FACluTY TYFE QESCR:8 TION y lZl@l NA l__

• 80 ru8usrY 8110130542 810928 NRC USE ONLY I?3UED DESCRIPTION h PDR ADOCK 05000249 ,

?.,,J.,0,,,l l N l@l NA S PDR l llllllllll lllj 8 9 to 68 69 Gerald W. 3ergan mM-@42 2920 Ext. 5290.;;9

DEVIAil0N fiEPORT

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Commonwealth Edison

• STA UNIT YEAR N O.

D 3 45 PART tl TI TLE OF DEVI ATION Leak in Piping 3A Rx Water Cleanup Regen. Hx .-

OCa' URRED .

Piping 9/1/81 1100 DATE TIME SYSTEM AFFECTED 1200 Pt./M CONDITIONS TESTING Rx Water Cleanup l- J C MODE Run pwp g yw73 2000 , LOAD (MWF) 602 YES NO CESCRIPTiON OF EVENI An inspection of the 3A-1203A regenerating heat exchanger disclosed possible, cracks on the inlet to the heat exchanger (line 3-1201 B-8"-A).

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DESCRIPTION OF CAUSE Unknown at this time.

OTHER APPLICABLE INFORMATION EQUIPMENTllL j YES DR NO. WR NO.

FAlWRE Michael Wright 3/2/81 L._,1 NO N/A 15351 RESPONSIBLE SUPERVISOR CATE PART 2 l OPERATING ENGINEERS COMMENTS All leakage was contained within the Rx building floor drain system. The indications are in piping that is outside of the primary containment boundary. _

TYPE OF CEVIATION EVENT OF POTENTI AL SAFETY-TECH SPEC NON-REPORTABLE ANNUAL RELATED REPORTABLE O p RRENCE PUBLIC (NTEREST VIOLATION OCCURRENCE REPC'R TI NG WR ISSUED 14 DAY IOCFR21

_ YES YES X 30 CAY hIh,]!CN ,

NO NO X i REPORTA8LE CCCMRENCE ACTICN ITEM NO. PROMPT ON-SI TE NOTIFICATION NUMBER R. M. Ragan 9/2/81 0000 W 81-21/03L-0 N/A TITLE DATE TIME

.., TITLE CATE TIME 24-HOUR NRC NOTIFICATION ' X 1CMPT OFF-SI TE NOYi FICATION TPH

• REG (Qgiii CATE TIME I I TLC OATE TIME TGA REGION lli a COL CATE TIME TI TLE DATE TlVE RESPCNS18LE CCMP ANY OFFI CER INFOPMED OF IOCFR21 COND f TI ONS AND TWEIA AEDO AT *O NPC

• TITLE DA iW REVI EW AND COMPLETED - Michael Wright 9/2/81 ACCEPTANCE BY STATION REVI E'A Qg [Q p7 [h/ -

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RESCLUTION APPROVEC AND AUTHORIZED FOR DISTRIBUTION

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