05000298/LER-1979-043-03, /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

/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: 05000298/LER-1979-043, Forwards LER 79-043/03L-0 05000298/LER-1979-043-03, /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
References
LER-79-043-03L, LER-79-43-3L, NUDOCS 8002280425
Download: ML18024B543 (2)

LER-1979-043, /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

Event date:
Report date:
2981979043R03 - NRC Website

text

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<r NRCJ:OR/VI 366 (7.771 LlCENSEE EVENT REPORT

. NUCLEAR REGULATORY COMMISSION

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0 LICENSEE CODE 14 15 (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 0 0

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) Q~Qs LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 f a weld on the discharge of the "AH 6 "B" REC.pum dischar e i in

~ This ortion

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CON'T soUAcE MO 5

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60 61 DOCKET NUMBER EVENT DATE 74 75 REPORT DATE 80 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 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

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ectable.

Reference LER Re ort 78-27 and

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vent resented no adverse conse uences from 0

B afety.

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9 80 7

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CAUSE

CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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LJ 21 22 23 24 25 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPADX PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS 22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER QIB ~C QIB

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Q26 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION ANDCORRECTIVE 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

e 1 d is acceptab 1e for continued service. An analys is of a simi1ar failure wil1 de-ermine the cause and an u dated re ort will be submitted.

7 8

9 FACILITY STATUS

% POWER OTHER STATUS QBO 2B 0

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29 NA METHOD OF DISCOVERY CqE Q~Q LAJQ>>

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10 44 45 PERSONNEL FXPOSURES NUMBER TYPE DESCRIPTION Q3B EZ lOJa.JnJO7LZJQ3B 7

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>>11 12 13 PEASONNE'L INJURIES NUhlllEA DESCAIPTIONQ41

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11 12 LOSS OF OB DAhIAGE TO FACILITYQ43 TYPE

DESCRIPTION

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I GB GB NAME OF PREPARER PHONE; 80 80 80 80 80

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