ML20148K390

RO 50-29/75-16:on 751129,during Type C Containment Isolation Test,Leakage Detected from TV-409,vapor Container Sys Return Header Isolation Trip Valve.Caused by Valve Seating Surface Degradation.Valve Refurbished

ML20148K390
Person / Time
Site:	Yankee Rowe
Issue date:	12/12/1975
From:	Autio H, Janet Staub YANKEE ATOMIC ELECTRIC CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RO-50-29-75-16, NUDOCS 8012040440
Download: ML20148K390 (4)

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YAliliEE ATODiC El.ECTRIO domPAllY

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.Decaaber 12, 1975 ' 41 ,

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Mr. J. P. O'Reilly, Director U.S. Nuclear Regulatcry Cammission

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Office of Inspection and Enforcement ,

Region I

! 631 Park Avenue j King of Prussia, Pennsylvania 19406

Subject:

Reportable Occurrence 50-29/75-16 Excessive Leakage from Vapor Conta ner Trip Valve, TV-409

Dear Mr. O' Reilly:

In accordance with Technical Specifications, Section E.2.a. ,

the attached Licensee Event Report is hereby submitted.

Very truly yours ,

.Q[Cbry.f L bt' s Herbert A. Autio Plcnt Superintendent JLSjb Enclosure -

cc: (40) Director, Office of Ins,,ection and Enforcement U.S. Nuclear Regulatory Lrenission Washington, D. C. 20555 (3) Director, Office of Management Information & Program Control U.S. Nuclear Regulatory Commission

• Washington, D. C. 20555

_f i THIS DOCUMENT C POOR QUAI.lTY PAG ee 8012 04 09yo 14013 7

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'. . s pONTROL BLOCK:l

.( l(l I 8CENSEE EVENT REPORT l l l

( ( l (PLEASE PRINT ALL RET.UIRED INFORMATIO

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.). 89 *14 15 25 28 30 31 32 CATEGORY 00Cx(T NUMBER EVENT DATE REPORT DATE l'SpJ LL] I 01 s101-10 lo i2 I 9 I - I i l 112 Io 17 Is I i11211121:IsI

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o i COmr I I 7 6 57 58 59 60 61 68- 63 74 75 80 EVENT DESCRIPTION o2 lDurina routine Tvne C Containment Isolatica Valvo Surveillance tnstinn nyeos :iva '

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.foTil lleakaae was detected from isolation valvo Tv-409. vanor containnr woatino system -~

I 7 -89 80

@ l Return Heador Isniatinn Trin Valvo- This constitutes a violation of Technical j-7 89 80

@ ISoecification, Section E.2.a. (3) abnormal dearadation discovered in the primary l 7 89 80

$ Icontainment and is therefore reported as Reportable Occurrence 50-29/75-16 l 7 89 peg 80 SYSTEM CAUSE COMPONENT COMPONENT COCf CODE COMPONENT CODE . SUPPUER MANUFACTURER VOL.ATON

@ lS l Dl [E_) lV l A lL l VI ElX l [A_j lM l1 l2 l0 l l yl 7r G 9 10 11 12 17 3 44 47 48 CAUSE DESCR!PTION ,

0 l The 4 inch. ASA150 Mason Neilan falve..siittina surfaco had dearaded ta A nnint tnMyj '

7 89 -

80

@ l excessive leakage. The val.a was refurbished and retested satisfactorily. l 7 09 80 8I I

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StA S  % POWER OTHER STATUS S OVERY DISCOVERY OF8sCRIPTON 1 [Hj l0l0l 0l l NA i l b.l l Type C, Containment Iso.lation Testl 7 8 9 10 12 13 44 45 48 80 ACTIVITY CONTENT RELEASEO AMOUNT OF ACTMTY LOCATON OF RELEASE 1

[Z.J OF lZlRELEASE NA l l l NA l 7 0 0 10 11 44 45 80 PERSONNEL EXPOSUnES M tveER TYPE DESCRIPTON 1 10101Ol lZl l NA _. l 7 89 11 12 13 80 PERSONNEL INJUdiES NUMBER DESCRIP TON N l010l0l l NA l 7 89 11 12 80 OFFSITE CONSEQUENCES 1

l NA l 7 89 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPT ON ,

H' l NA l ,

7 89 10 80 PUDLICiTY j 1 l NA l

l 7 89 ,

80 ADDITIONAL FACTORS E I l 7 i9 80 3I 7 89 .

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NAME: J. L. Staub pgggg; O L E M

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.L Rowe, Massachuse:1s 01367 lb Y ee<es

-e ' Decerrber 1,. 1975

[3 a 9i e U. S. Nuclear Regulatory Comission "i Office of Inspection & Enforcement .

't Region I M 631' Park Avenue King of Prussia Pennsylvania 19406  ;-

Attention: Mr. J. P. O'Reilly ,E :

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Dear Mr. O'Reilly:

.j-Pursuant to the requirerents of the Technical Specificatio.ts .

L i* Section E.2.a.(3), abnormal degradation discovered in the primary i j

containr.cnt is reported as Reportable Occurrence 50-29/75-16,. ,

During routine Type C, Containment Isolation Valve Tests, -

excessive leakage was detected from isolation valve TV-409. Vapor Container Heating System Return Header Isolation Trip Valve.

A 14 day Licensee Event Report will #ollow.

.. Very truly yours, 4

H. A. Autio

- Plant Superintendent NNS/.ib cc: (2) Director, Office of MIPC

U.S. Nuclear Regulatory Comission Washington, D. C. 20555 i

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NRC, LMSTp!BUTION FOR PART 50 DOCK ERIAL d .'N - ** W'W (TEMPOR,ARY FORM)

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.y' CONTROL NO: 14013j

, ...- . R 3 . FILE: IncIDEttr REPOR9 l

l FROM: Yankee Atomic Elec.Co. DATE OF DOC DATE REC'D LTR TWX RPT OTHERl Rowe, Mass. .. . .  !

h.A. Autio - ---

12-12-75 12-17-75 XXX TO: OR.lG CC OTHER SENT AEC PDR XYY J.P. 0:Reillv n an S NT LOCAL PDR XXX )

CLASS ' UNCLASS ~ PROPINFO INPUT NO'CYS REC'D DOCKET NO: ,

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50-29 49 D FEC RIPTION'. . ENCLOSURES:

• EErter trans the following. . . . . . . ' .

Licensee Event Repott # 75--16,.on 1.1-29-75

'. Concerning : cessive Lea.ka'ge:;from Vapor

. Containeep frip Valve. . . . . . - ' - -

40 Cys. Received)" '

PLANT NAf4E: Yankee Rowe

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FOR ACTION /lNFORt ATION 3AB '.2-18-75

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SHAO SPANG LER ,i. LE E (L) _ PLANS BOYD **p ST E L LO MCDONALD M. RUSHER 00K (L)

MOORE (L) ** HOUSTON _E NVI R O_ S. REED (E) CHAPMAN DEYOUNG (L) **,,.NOV AK MULLER M. ._RVICE (L) DUBE (Lirl SKOVHOLT (L) ,ROSS DICKER E. COUPE GOLLER (L) (Ltr) v . SHEPPARD (L) f '?PO LITO KNIGHTON M. SLATER (E) PETERSON P. CO L LINS /TEDESCO YOUNGBLOOD H. SMITH (L) HARTFIELD (2)

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