ML20090M782
| ML20090M782 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 01/30/1974 |
| From: | Larson C NORTHERN STATES POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 9105090403 | |
| Download: ML20090M782 (2) | |
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NORTNERN STATES POWEn COMPANY
,}buticello, Mmnesota 55302 January 30, 1974 0
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mum co sua Mr. J. G. Keppler, Fagional Director JAN 311974
-e Directorate of Regulatory Operations y
unnu m 799 Roosevelt Road
.EE!) 4jr Region III United States Atomic Energy Cons.ission g
L Glen Ellyn, Illinois 61037
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Dear Mr. Keppler:
itNTICELID }UCLEAR GDEPATING PIA)(T
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i Docket No. 50-263 License No. DPR-22 i
I while perfoming a quarterly surveillance test, ene of 29,1974,ine High Area Tenperature switches as found to trip on January
,i sixteen RCIC Steam L i
outside of Technical Specification limits.
In accordance with Section 3.2.1 of the Technical Specifications, the RCIC Steam Line High Area Temperature i
Switches must be set at <200'F.
'Ihe tanerature switch wu initially found to trip at 205'F. The s Etch tripped wit'un specified limits upon subsequent l'
retests; howver, the sw-itch is considered defective and'has been replacM.
i Yours very tmly, Q
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Plant Manager Manticello p
JAN 301974 C yJ CEL/kik er 4m,, a,
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Minnesota Pollution Control Agency Atta:
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Copies sent by Te1< copier to Keppler and O' Leary
%5 9105090403 740130 PDR ADOCK 05000263 S
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"~!CN TOR PART 5_0 P0CRET }MTERT' 835 (TDiPORARY TOTJi)
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DATE OF EOC lDATEI2C'D LTR l '.i2!0 RFT OTTIER Northern States Power ~ Cormany Monticello, Minn. 55362 l
'ir. C.E. Larson 1-30.M l-30 74 faesimile TO:
CRIG j Cr I Stir'n SEUT AEC PDn XXX SENT LOCAL PDR XXX Mr. J.C. Reppler I
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CLA.2S UNCLAdS PROP IhTO 1::FMT WO CYS REC'D DOCKET 1:0:
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50-263 DESCRII' TION :
ENCLOSURES:
Ltr rsporting an abnormal occurrence at the
'ionticello Nuclear Generating Plant concern a RCIC Steam Line H1Rh Area Temocrature switch gTOT{'qTJT :TT.qT-g
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which was found to trip outside of toch specs
& was replaced......
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