05000296/LER-1979-019-01, /01T-0:on 791204,while Performing Ultrasonic Insp of Core Spray Piping,Indication Found Adjacent to safe-end- to-core Spray Pipe Weld DGS-3-18.Possibly Caused by Stress Corrosion Cracking in Stainless Steel Pipe

/01T-0:on 791204,while Performing Ultrasonic Insp of Core Spray Piping,Indication Found Adjacent to safe-end- to-core Spray Pipe Weld DGS-3-18.Possibly Caused by Stress Corrosion Cracking in Stainless Steel Pipe

ML18024B189
Person / Time
Site:	Browns Ferry
Issue date:	12/17/1979
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024B190	List: 05000296/LER-1979-019, Forwards LER 79-019/01T-0 05000296/LER-1979-019-01, /01T-0:on 791204,while Performing Ultrasonic Insp of Core Spray Piping,Indication Found Adjacent to safe-end- to-core Spray Pipe Weld DGS-3-18.Possibly Caused by Stress Corrosion Cracking in Stainless Steel Pipe
References
LER-79-019-01T, LER-79-19-1T, NUDOCS 7912270483
Download: ML18024B189 (4)

LER-1979-019, /01T-0:on 791204,while Performing Ultrasonic Insp of Core Spray Piping,Indication Found Adjacent to safe-end- to-core Spray Pipe Weld DGS-3-18.Possibly Caused by Stress Corrosion Cracking in Stainless Steel Pipe

Event date:
Report date:
2961979019R01 - NRC Website

text

NR&6QAM366 I7.77)

LtCENSEE EVENT REPORT 7

8 9

CONTROL BLOCK:

I ALBRF3Q20 LICENSEE CODE

~

14 15

,Q LICENSE NUMBER 0

0 3

4 1

1 1'

4 ~QE 25 26 LICENSE TYPE 30 57 CAT 58 Q

Q (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

CON'T 7

8

~03

~LOB 0

5 0

0 0

2 9

6 7

1 60 61 DOCKET NUMBER 68 69 EVENT DESCRIPTION AND PROBABlE CONSEQUENCES Q10 While erformin an ultrasonic i s was found adjacent sto the safe end to core s

2 0

QB l

7 7

9 Qg EVENT DATE 74 75 REPORT DATE 80 u~~cJ2ZG s

ra i e weld number DCS-3-18.

There were 4

I no resultin si ificant occurrences no revious sisd.lar events and no the health or safet of the ublic.

~06

~07

~OB 80 7

8 9

g 7

8 SYSTEM

CAUSE

CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE F

Q11 Z Q12 UZQ13 Z

Z Z

Z Z

Z Q4 UZQNE UZ Q13 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LEAIAO EVENT YEAR REPORT NO.

CODE TYPE NO.

Q17 REPQRT ~79 U

~01' U~ LU'Z LJ LJ 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDQ PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS +22 SUBMITTED FOAM SUB.

SUPPLIER MANUFACTURER Q18 ~XQI9

~ZQ20

~02'

~ 023

~02"

~026 Z

9 026 33 34 35 36 37 40 41 42 43

'4 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 3

0 The cause of the indications ia unknown but is believed to be stress-corrosion crack-ing in the stainless steel pipe.

This pi in was re laced on unit 3 with carbon steel I" Nl pipe.

Unit 2 core spray'piping was replaced with carbon steel during a previous out-3 age.

'Unit 1 piping wi11 be examined.during the outage to begin Zaiiuary 2, 19 80.

4 7

8 9

FACILITY STATUS 9C POWER OTHER STATUS O30 0

0 0

NA NAME OF PREPARER

~is

~QER ~QER 7

8 9

10 12 13 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ36 6 PJ Q33

~ZQ34 NA 7

8 9

10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION ~3g

~l7 L000

~0

~0 IQ37 Z

Q3s NA 7

8 9

11 12 13'ERSONNEL INJURIES 7

8 9

11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE

DESCRIPTION

g

~ZQ42 NA 7

8 9

10 PUBLICITY 7

8 9

10 80 80 45 NA LOCATIONOF AELEASEQ 80 80 80 80 NRC USE ONlY PHONE:

68 691 79 122 'FI) 80 4,

0 0

METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32

~CQ31 Inservice Inspection 45 46

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