ML17258B076

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RO 81-009:on 810515,during Refueling & Maint Outage,Eddy Current Examinations Revealed Abnormal Degradation of Steam Generator B Inlet Tubes.Crevice Indication Tubes Will Be Sleeved.Hot Leg Tubes Will Be Removed
ML17258B076
Person / Time
Site: Ginna Constellation icon.png
Issue date: 05/15/1981
From: Snow B
ROCHESTER GAS & ELECTRIC CORP.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RO-81-009, RO-81-9, NUDOCS 8106040270
Download: ML17258B076 (6)


Text

REGULATORY I RMATION DISTRIBUTION SYS i (RIDS)

ACCESSIONNBR:8106040270

'OC ~ DATE: 81/05/15 NOTARIZED:'.NO

. DOCKET FACIL:50-244 Robert Emmet Ginna Nuclear Planti Unit ii Rocheste'r G

05000244 AUTH,NAME'UTHOR AFFII IATION SNOW i B'I A ~

Rochester Gas 8 Electric Corp.

RECIPE PAME RECIPIENT AFFILIATION

~ GRIER~B ~ H ~ 'egian li Philadelphian Office of the Director (81/03/01)

SUBJECT:

RO'1, 009:on-810515idur ing, refueling8 maint outagegeddy cur rent examinations reIvealed abnormal.,degradation of steam generator B inlet tubes. Crevice indication tubes will be sleeved.Hot leg tubes will be" removed.

DISTRIBUTION CODE:

A002S COPIES RECEIVED:I TR

/ENCL SIZE:'ITLE:

Incident'eports NOTES: 1 copy:SEP Sects Ldr ~

05000244 RECIPIENT ID CODE/NAME ACTION:

CRUTCHF IELD-04 INTERNAL: A/D COMPE,STRU06 A/D MATL 8 QU08 A/D PLANT'YS10 A/D SFTY ASSE12 nEOn ASLBP/J ~ HARD CHEM ENG BR 16'ORE PERF BR18 D IR g HUM FAC S21 EFF TR SYS BR23i GEOSCIENCE S

26 I8E 05 LIC GUID BR 30 MECH ENG BR 33 OR ASSESS BR 35 R,

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1 RECIPIENT ID CODE/NAME'/D ENV TECH 07 A/D OP REACT009 A/D RAD'ROT 11 ACC'VAL BR 14 AEOD/DMU AUX SYS BR 15 CONT SYS BR,17 D IR'g ENGINEER I20 DI R'e S Y8 INTE622 EQUIP, QUAL BR25 ISC'YS BR 29' JORDAN g E ~ /IE MATL. ENG BR 32" NRC PDR

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EXTERNAL! ACRS LPDR 46 03 16 16 1

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ROCHESTER GA5 AND Et.ECTRlC CQRPORAT(ON

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+ 89 EAST AVFHUE, ROCHESTER, N.Y. 14649 Way 15, 1981 1 g 1 TP l4AQl aiti c,owe sea 546 2 tOO Hr. Boyce H. Crier, Direct. or U. 8. Nuclear Regulatory Cosrnission Office of Inspection and Enforcement Region l.

63I Park Avenue King of Prussia, PA 19406 SUMECT:

Reportable Occurrence 81-009, Abnormal Degradation of Steam Cenerat'or Tubes Dear Nr. Crier.

This is confirm my phone call on Hay 15 ~

1981 to report Reportable Occurr'ence 81-009 at Cinna Stat ion.

A program of planned Eddy Current examinations wa<<con ducted oa both Loop "A" and "B" Steam Cenerators at Cinna Station from Hay 7th to

12th, l981-during the present refueling and maintenance outage.

This examination cons is ted of a

mu Iti-frequency Eddy

Current, examina t ion to de tee t and measure potent ial tube defects.

The inlets of both steam generators received a

100'X inspection and the out.lets received approximately a

25X inspection.

The resul ts of these examinations did not reveal any report. able indicatfons in the out1ets of either steam generator and the inlet of the "A" steam generator.

The "B" steam generator inlet has 45 tubes with indications from the multi-fre-quency data of Mhi ch 44 are crevice indicnt ions in the tube sheet crevice area: and l other indication above the tube sheet out on the periphery.

Of these 44 tubes 6

tubes vere-above our 4OZ degradation criteria.

Based upon these results steam generator tube sleeving

<<ha) l commence by<

a1eeving-the 44 crevi.ce indication tubes and plugging the I tube in the"periphery; After tube sleeving. operations are complete-. tube pulling oil.1.. be initiated. to.

remove 3 tubci-from the "B" generator hot leg.

BAG: 1.4j xc'. E.~Haier ',.

L. S T an@

.T. C. Noon

'g JUN 03 198)e 8

~ "'~ MlatAR RtagATOe ceAtsseg I q4~oP Very truly yours, P~cu~ 6 d~

Bruce A, Snow Pl ant Superintendent yak SI I

366

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SUBMITTED FORM SUB.

SUPPLIER Qs LJQ24 LJQ>>

40 41 42 43 SYSTEM CODE CAUSE SUBCODE CAUSE CODE

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10 11 SEQUENTIAL LER/RO EVEN Y AR REPORT NO.

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FACILITY STATUS

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10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

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11 12 13 PERSONNEL INJURIES pro~o LOSS OF OR DAMAGETO FACILITYQ43 TYPE DESCRIPTION Q4.

7 8

9 10 P U8 L IC ITY ISSUED DESCRIPTION~

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10 NAME OF PREPARER METHOD OF DISCOVERY 45 46 45 80 LOCATIONOF RELEASE Q 80 80 80 80 PHONE:

68 69 80 NRC USE ONLY 44a 80 44 0

DISCOVERY DESCRIPTION Q32

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