ML20148K395
| ML20148K395 | |
| 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-50-29-75-12, NUDOCS 8012040442 | |
| Download: ML20148K395 (3) | |
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YAlllWE ATOMIC E!ECTWC 00DPAllY
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Rowe, Massachusetts 01367
,9 December 12, i375t/dd g
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Mr. J. P. O' Reilly, Di rector U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue x'~x.~
King of Prussia, Pennsylvania 19406 ~-
Subject:
Reportable Occurrence 50 29/75-12 Pressurizer W.R. Level Sc' ram Instrument Setpoint Drift
Dear Mr. O'Reilly:
In accordance with Technical Specifications, Section E.2.b.,
the attached Licensee Event Report is hereby subr.litted.
Very truly yours, h
gir) 0 lb Herbert A. Autio Plant Superintendent JLS/jb Enclosure cc:
(40)
Director, Office of Inspection crid Enforcement U.S. iluclear Regulatory Commission Washington, D. C. 20555 (3)
Director, Office of Management Information & Program Control 0.S. fluclear Regulatory Commission Washington, D. C. 20555 THIS DOCUMENT CONTAINS P00R QUALITY PAGES t
l 801204'O k W p
14012 i
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LICENSEE EVENT REPORT. <
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,14 - 15 25 26 30 31 32 CATEGORY TY P S
E D CKET NUMDER EVENT DATE REPORT OATE-01 CorrT l l
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[LJ l L l l Ol Sl0 l-101012 l 91 11 l1 11 14 l7 151 lll2111217l5l 7 8 57 58 59 EO G1 68 09 74 75 60 EVENT DESCR:PTION
@ l During noral refueling operations a calibration of the pressurizer wide range level 'l 7 89 80 '
35 l instrument found the hich level scram histable setooint areater thar the Technical I
7 89 80 3E l Snacification lir,i t of 900 inchot This enns ti tutos a violation of Technical l
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7 89 80 f
@ l Specification Section E.2.b.(1) and is reported as Reportable Occurrence 50-29/75-12.l 7 89 80 o
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l 7 89 payg 80 DE C E COMPONENT CCOE MANU CU R VIOLATON M LI I B l [E_)
li lN ISITl RI Ul lN I lWlll2l01 l Yl 7 89 10 11 iP 17 43 44 47 48 CAuSE DESCR:PTION DE lThe Westinghouse 957D633, Gr.1, Standard Bistable Assembly used for thS Pressurizer i
7 89 80 '
EUE IUide Rance Level Scram tricoed at 203 inches vice the Technical Specification limit of}
7 89 80 3 19nn in This '.'es attributed to instrument setnoint drift.
The instrument was l
FA0tuTY METHOO OF STATUS
% P /.'ER OTHEA STATUS 0:$00VERY DISCOVERY DESORPTON IIE lHl lol01Ol l
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10 11 44 45 80 PERSONNEL EXPCE:ES f
NUMCER Tf;I CISOR PTION 1
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NA Jl 7 89 11 12 13 80 l PERSONNEL INJUA ES Nut /eER CEs;::T :N 1
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':A ll 7 89 11 12 60 i OFFSITE CONSECUENCES gg l NA ll 7 89 80 !
LOSS 04 DAMAGE TO FAC:LITY TYFE CESO A D hl UA l'
i3 7 89 10 80 PUBLICITY 1
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ADDiTICNAL FACTC:
6 1c l Cause Descriptic1 (cont'd): recalibrated and tested satisfactorily.
ll 7 89 80 ml 1i
? 89 W
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NRC D(.CfRIBUTION FOR PART 50 DOCKET"rcATE
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CONTROL NO:
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I FROM: Yankee Atomic Elec. Co.
DATE OF DOC DATE REC'D LTR TWX RPT OTHER Rowe, Mass;.
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H.A. Autio 12-12-75 12-17-75 XXX TO:
ORIG CC OTHER SENTNRC POR XXX I
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SENT LOCAL PDR
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CLASS UNCLASS PROPINFO INPUT,
NO CYS REC'D DOCKET NO:
XXX 40 50-29
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DESCRIPTION:
ENCLOSUREC:
Letter trans the following....... -
s Licensee Event Report # 75-12, on 11-14-72
.Concerning.a calibration of.the pressurizs wide range.leve,1 f.nstrument exceeding:the!
Tech. Specs.......
(40.Cys. Received)-
t PLANT NAME:
Yankee Rowe
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