ML19343B103
| ML19343B103 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 08/04/1975 |
| From: | Autio H, Stlaurent N YANKEE ATOMIC ELECTRIC CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| AO-50-29-75-6, NUDOCS 8012040307 | |
| Download: ML19343B103 (4) | |
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August 4,1975 co' co Mr. J. P. O'Reilly, Director Office of Inspection & Enforcement Region I U. S. Nuclear Regulatory Commission 631 Park Avenue
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King of Prussia, Pennsylvania, 19406
Subject:
Abnormal Occurrence 50-29/75-6, Failure of the Vapor Container Drain Line Trip Valve to Fully Close
Dear Mr. O'Reilly:
In accordance with Technical Specifications Section E.2.a.
the attached Licensee Event Report is hereby submitted.
Very truly yours.
/
Herbert A. Autio Plant Superintendent NNS/jb Enclosure (40) Director of Regulatory Operations cc:
U. S. Nuclear Regulatory Ccamission l
Washington, D. C. 20545 1
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801204Ogg
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LICENSEE EVENT REP.nT Q
CONTROL BLOCK:Cl l
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l (PLEAIE PRINT ALL REIUIRc3 INF!RMt.TIIN) 1 6
in UCENSE NUMBIA YE YPE o1 l Ml A lY lK lR l1l l 0 l 01-l 0 l0 l0 l 0 l 0 l-l 0l 0l l4 l 1 l1 l1l 1l l0l1l 7 89
'14 15 25 26 C3 31 32 CATEGORY TYPE S cA DOCKET NUMBEA EVENT CATE REPORT OATE 01 CON'T l D I I l LL]
LLj l0 5l Ol-l 01012191 10171215171Sl 10 l 8101417151 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCR!PTION HE lDurina orecarations for a Class C leak test on the Vapor Container Drain Line Trip l
7 89 So
@ IValve, TV-209, the valve failed to go fully closed. This incident had no effect on the l 7 89 80
@ lhaalth and safety of the public since the drain line discharges into a normally closed l 7 89 80 M l system. This system is the Vapor Container Drain Tank which is considered an extension j 7 89 80
@ lof tha Vacor Container. This was a violation of the Technical Specifications, I
sysTru CAUSE COM ENT COMPONENT C00E COCE COMPCNENT CODE SUPPjER MANUFACTUFER VIOLATON M lSlDl lEl IV l A lL lVl EI XI U
l Fl 1l 3l 5l
[YJ 7 89 10 11 12 17 43 44 47 48 CAUSE OESCAlPTION lTV-2nc a Fischer Governor Co. tvoe 667L valve failed to fully close because of l
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7 89 80 o
l corrosion buildup between the valve dise linkage and the pin hinging the linkage l
7 89 80 1.
I to the valve body. The valve was disassembled and repaired.
l 7 89 r :.uTV MErwoo OF
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Bo ET&Tes
% POWEA OTHER STATUS 0:SCOVERY OfSCbVERY DESCAiPTION 8
Lt.J 111010I I
NA l
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9 10 12 13 44 45 45 '
80 ACTMTV CCNTENT A! LEASED OF Lz_jPE6E ASE l AMOUNT OF ACTMTV LOCATON OF AELEASE NA l
l NA l
E I ZI 7 8 9
10 11 44 45 60 FERSONNEL EXPOSUAES NUveEA TYPE DE SC A.PTICN n 10101 of LIJ l
NA I
7 89 11 12 13 80 PEASONNEL INJUA;ES NUYBEA OESCR'PTON H !010101 I NA l
7 89 11 12 80 OFFSITE CONSEGUENCES Xl NA I
7 89 80 LOSS OR DAMAGE TO FACluTY TYPE CE SC A;PTCN LJ l
nA I
7 89 10 80-PUBLICITY 1
I nA I
7 89 80 ACDiTIONAL FACTOPS 8 LEvent Descriotion (cont'd): Section E.4.d. (Yankee Rowe Abnormal Occurrence No. 75-06)l 7 89 80 3l l
7 89 80 Nt,ME:
N. N. St.Laurent PHONE:
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July 25, 1975 4
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i U. S. Nuclcar Regulatory Connission it Offico Of Ent'orcecant and Inspection f
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631 Park Avenue T
King of Pressia, Pennsylvania 19t,05 i
j Caar Sir:
i In accordance with Technical Specification Secticr. E.4.0.,
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fafiura of one or r. ore corconents of an engineered safety feature, is T
reported as fJanore.al Occurrence 50-29/75-6.
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i Dwing preparations for a leak test of the vapor container k
drain-line trip valvo T'J-EC3 it er.s cbserved that the vaiva did not ca fully ciesed.
Tnerefera, the leck test could r.ot be perimed.
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- The valve will be isolated for raintenance, and its operation
-4 reatcred to noreal.
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This inci&nt has no effect on tire health and safety of the
_4 ptilic since the drain lina dischercas into a nomally closed systen.
T.;is closnd_s; stem is the Vapor Ccatciner Drain Tank t:hich is considamd cn entensien of the vapor container.
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The incidant occurrad on July 25,1975 at %1300 hours.
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Ver/ truly yours, 1
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Harb rt A. Autio
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.7 P00R ORIGINAL
NFC DISTRIBUTION FOR PART 50 DOV:T MATERI AL V
(TEMPORARY FORM) V CONTROL NO:-
FILE: INCIDE:,T REPORT FIL F ROM :T " '*
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- erbert... fatto S-4-75 S-6-75
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SENT LOCAL PDR CLASS UNCLASS PROPINFO INPUT NO CYS REC'D.
DOCKET NO:') 50-20
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1 DESCRIPTION:
ENCLOSURES:
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Letter tre.ns t'.e follo rin ;...
A/O $ 75-06 on 7-25-75, concerni/Ai ilure of l
the Vapor Container Drairt Lina [d. Valve to Fully Close......
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