ML19343C526

LER 81-002/99X-0:on 810303,during Steam Generator Tubing Surveillance Insp,First Sample Results on E24A Found Three Tubes Exceeded Plugging Limit.Cause Not Stated

ML19343C526
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/18/1981
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19343C522	List: ML19343C521 ML19343C526
References
LER-81-002-99X, LER-81-2-99X, NUDOCS 8103240437
Download: ML19343C526 (2)

Text

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NRC f ORM 3E4 U. S. NUCLE AR REGULATORY COMMissON t.lCENSEE EVENT REPORT EXHIBIT A CONTROL BLOCK: l l l l l l lh (PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATIONI o i l AlR l Al Nl0 l 1 lgl 0 l0 l -l0 l0 l 0l 0l 0 l- l 0 l0 [g4 l1 l 1 j1 l l$3jgl 15 UCENSE NVUmgg 25 26 Le(L NM , v Pi 40 l lg CAT Sn

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I S 60 6I coC.LET 8 uutER 50 tv(NYo&TE 34 15 o AT4 EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES Oio o 2 During Refueling Shutdown, the Steam Generator (SG) Tubing Surveillance i o ginspection was conducted per the requirements of T.S.4.18. The first i o . isample inspection of each SG, E24A & E248, included 3% of the total i o s Inumber of tubes plus 100% of the open insor tion lane tubes, as defined i o . iby T.S.4.18.3.a.3(1). The results of this inspection are reported per i o i Ithe requirements of T.S.4.18.6. (See attachment.) l o e i I

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42 43 as e, C AUSE DESCRaPTION AND CORRECflVE ACTIONS h i o The first .gmple inspection results on E24A were classified as Category C-2,i i las defined by T.S.4.18.3 (where 3 tubes exceeded plugging limit). Second i

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, LER 81-002/99X-0 ATTACHMENT AN0-1 NUMBER & EXTENT OF OTSG TUBE INSPECTION "A" 0TSG "B" 0TSG

1. of tubes - Description # of tubes - Description 375 ' Lane tubes 382 Lane tubes Rows 73, 74, 75 Rows 73, 74, 75 77, 78, 79 77, 78, 79 493 Random 3% 490 Random'3%

928 Additional Inspection

- per Tech. Spec. (C-2)

INSPECTION RESULTS (20% OR LARGER % TWD)

"A" 0TSG "A" 0TSG Tube-# Location %TWD Tube # Location %TWD 106-96 12-13 35 72-130 10 30-35 94-70 13-14 20 111 14-15 20-30 149-34 2-3 30 97 12-13 20-30 118-27 .1-2 20-30 **7-29 UTS 20 13-5 5-6 28 37-97 15-UTS 20 6-51 4-5 20 51-111 1-2 20 75-6 15 20

• 83-2 UTS 6" 36~ "B" 0TSG UTS 8" 58

• 70-1 UTS-1" 45 63-19 10-11 20

• • 73-2 UTS 20-30 54-121 -14 25 ,

• 77-13 UTS 1" 70 141-23 15-UTS 25

• • 80-8' UTS 6" 20 **122-2 UTS 1" :25-35 l

• Indicates tubes that were plugged.  :

• • Indicates tubes that were plugged as preventive maintenance. )

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