ML13308B485

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RO 76-8:on 761101,eddy Current Exam Indicated Wall Thinning in Several Westinghouse Steam Generator Model 27 Tubes.Cause Not Determined.Defective Tubes to Be Plugged Prior to Reactor Restart
ML13308B485
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 11/12/1976
From: Ottoson H
SOUTHERN CALIFORNIA EDISON CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
RO-76-8, NUDOCS 8103060520
Download: ML13308B485 (1)


Text

UCENSEE EVENT REPORT CONTROL BLOCK:

1PL8 8"TA s

LICENSEE LESEELICENSE EVENT NAME LICENSE NUMBER TYPE TYPE SAS1 0- 5 11 0 0 -

0 1 0 10 1

0 -1 1 1 a

1 76~&LL14 15 25 ea1LL 5 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT 0 CON'T 5[

0 15 1 01-10 12 10 15 1L 1 01J7 6 1 f"76 8568 5

0 61 88 89 74 75 so EVENT DESCRIPTION I Eddy current examinations of the steam generator 7

89 00 Tubes indicate there are 15 tubes in A steam generator, 11 tubes in B steam 7

89 Igenerat or and38 tubes in C steam generator that have greater than 50% tube ao 7 8 9 L wall thinning.Licensee Event Report No. 76-8 80 7 88 9c SYSTEM CAUSE COMPONENT OE CODE COMPONENT CODE SUPPLER MANUFACTURER VIOLATION C

1.IIJ [U IHITIElXI CI HI

[ N I Wil 12l01 INI 7 8 9 10 11 12 17 43 44 47 CAUSE DESCRIPTION Westinghiouse Stam Generators. Model.27, Tube thinning at the anti-vibration bars 7590 7

1 and two inches above the tube sheet. All tubes with greater than 50% thinning 7898 indication will be plugged.

7 8 9 FACILITY METHOD OF.

STATUS 0 POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION L1 L21 10 101 N

LBL.......

Ji Eddy current testing of S/Gs 7 8 9

110 12 13 44 45 48 so FORM OF ACTIVITY CONTENT RLEAS OF SE AMOUNT OF ACTIVITY LOCATION OF RELEAS 12 NA NA 78 44

45.

so PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

[

Io oo I

NA 7

8 9 11 1

13 PERSONNEL INJURIES NUMBER DESCRIPTION E 1 10 1 o

N/A 7

89 11 12 OFFSITE CONSEQUENCES N/A 7 89 8

LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION

[a z I 7

8 9 10 0

PUBLICITY ElI VJA 7 89 ADDITIONAL FACTORS 7

8 9 7 eg 80 1E L N/A 1w

&1 7

89 NAME:

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OttOson PHONE: