ML20086E045

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AO 75-12:on 750609,standby Liquid Control Pump B Delivered High Flow Rate.Cause Under Investigation
ML20086E045
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 06/09/1975
From: Riley B
VERMONT YANKEE NUCLEAR POWER CORP.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086E038 List:
References
AO-75-12, VYV-3887, NUDOCS 8312060034
Download: ML20086E045 (1)


Text

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O VERMONT YANKEE NUCLEAR POWER CORPORATION s -,

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sevenTv ceven onove sTncer RUTLAND, VERMONT 05701 E

VYV-3887 7

P. O. DOX 157 VERNON, VcRMONT 05354 F

b June 9, 1975 k

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United States Nuc1 car Regulatory Commission 3

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Office of Inspection and Enforcement 0-Region 1 a

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E ATTENTION: James P. O'Reilly, Director

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g REFERL'NCE: Operating License DPR-28 Docket No. 50-271 Abnormal Occurrence No. A0-75-12 (24 IIour. Report)

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Dear Sir:

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d As defined by Technical Specifications for the Vermont Yankee f

Nucicar Power Station, Section 6.7, we are reporting the following Abnormal Occurrence as AO-75-12 and confirming our telephone conversation with your office.

E At approximately 0700 on June 9, 1973, while performing a routine

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scheduled surveillance test, it was deternined that th "B" Standby Liquid

. Control System Pump delivered a flow rate of 40.9 gpm at 1160 psig. Vermont

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Yankee Technical Specifications, Section 4.4.A.1, requires a flow rate F

verification of 35 gpm at 1275 psig. Prior to this discovery, the redundant system pump had been successfully tested.

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r Action has been initiated to investigate 'the cause of this occurrence.

L The plant was in a cold shutdown condition at the time of this incident.

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Very truly yours,,

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Bradford W. Riley Plant Superintendent L

WFC/kbd 7

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F 8312060034 750618 i

PDR ADOCK 05000271 g

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COPY SENT REGION 2

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