ML18024B543

LER 79-043/03L-0:on 791228,during Normal Operation,Routine Tour Indicated through-wall Crack of Weld on Discharge of a & B Radiant Energy Conversion Pump Discharge Piping.Cause Undetermined.Temporary Soft Patch Installed

ML18024B543
Person / Time
Site:	Cooper
Issue date:	01/23/1980
From:	Doan P NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML18024B542	List: ML18024B541 ML18024B543
References
LER-79-043-03L, LER-79-43-3L, NUDOCS 8002280425
Download: ML18024B543 (2)

Text

4 <r NRCJ:OR/VI 366 . NUCLEAR REGULATORY COMMISSION (7.771 LlCENSEE EVENT REPORT CONTROL BLOCK:

,Q (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

~01 7 8 9 N E C LICENSEE CODE P R 1Q2 14 15 0 0 0 0 0 LICENSE NUMBER 0 0 0 OQs4 25 26 1 1 1 LICENSE TYPE 30

) Q~Qs57 CAT 58 CON'T soUAcE MO 5 0 0 0 2 9 8 7 1 2 2 EVENT DATE 8 7 9Q 74 75 REPORT DATE 80 QB 8 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABI.E CONSEQUENCES Q10

~02 Uring normal operation, a rout ine tour of the plant indicated a throu h-wal 1 crack f a weld on the discharge of the "AH 6 "B" REC.pum dischar e i in ~ This ortion s isolatable from the critical loo ~ The redundant REC loo and er i p1y were available to sup 1 this critical loo . If the weld failed i wo

~o 6 ectable. Reference LER Re ort 78-27 and -2

~o 7 vent resented no adverse conse uences from 0 B afety.

80 7 8 9 SYSTEh'I CAUSE CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~BB Ql1 E Qa ~XQn P 1 P E X X Q>4 ~DQ>s ~E Qs 7 8 9 10 ll 12 13 18 19 20 R EV I 5 I ON SEQUENTIAL OCCURRENCE REPORT CODE TYPE U

LERIAO EVENT YEAR REPORT NO. NO.

Q17 REPORT Myp 21 22 23

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24 4 B 25 U<

27 LU~

28 29 U<

30 LJ 31 32 ATTACHMENT NPADX PRIME COMP. COMPONENT

~Q ACTION FUTURE EFFECT SHUTDOWN 22

~

SUBMITTED FORM SUB. SUPPLIER MANUFACTURER TAKEN ACTION ON PLANT METHOD HOURS QIB ~C QIB ~ZQ20 ~ZQ21 0 0 0 0 Q23 ~Q24 5 1 0 Q26 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o he component involved is a weld. The failure is a throu h-wall crack of undetermin-ble cause. The pipe is 12 inch A-53 GRB STD, normal operating pressure 94 psig.'tdthe lant conditions permit, the weld will be replaced. A soft patch is installed and th 3 e1d is acceptab 1e for continued service . An analys is of a s imi1 ar fai lure wil1 de-ermine the cause and an u dated re ort will be submitted.

7 8 9 80 CqE FACILITY STATUS ACTIVITY Q~Q 2B 0 CONTENT RELEASED OF RELEASE

% POWER 9 6 29 OTHER STATUS NA AMOUNT OF ACTIVITY Q QBO METHOD OF DISCOVERY LAJQ>> 0 DISCOVERY DESCRIPTION Q32 erator Observa ion LOCATION OF RELEASE Q 80 ZZ 7 8 uZ 9

Q33 hJQ34 10 44 45 80 PERSONNEL FXPOSURES NUMBER TYPE DESCRIPTION Q3B EZ 7 8 lOJa.JnJO7LZJQ3B 9 >>11 12 13 80 PEASONNE'L INJURIES NUhlllEA DESCAIPTIONQ41

~OO O Qo EA

() 11 12 80 LOSS OF OB DAhIAGE TO FACILITY TYPE DESCRIPTION Q43

~ZQ42 NA 9 10 80 8003280 'f~~

PUIII ICI TY NRC USE ONLY ISSUEI> I)ESCIIIP I ION 2 0 RJQ4" I 9 10 GB GB 80 ~ p 0

PHONE; It NAME OF PREPARER 0

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