ML20086E045

AO 75-12:on 750609,standby Liquid Control Pump B Delivered High Flow Rate.Cause Under Investigation

ML20086E045
Person / Time
Site:	Vermont Yankee
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: ML20086E045
References
AO-75-12, VYV-3887, NUDOCS 8312060034
Download: ML20086E045 (1)

Text

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s -, VERMONT YANKEE NUCLEAR POWER CORPORATION

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- RUTLAND, VERMONT 05701 E VYV-3887 " ' ' ' ' ' '

7 P. O. DOX 157 VERNON, VcRMONT 05354 F

b June 9, 1975 k

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!vo I United States Nuc1 car Regulatory Commission 3

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4-Office of Inspection and Enforcement E '

'a 0-Region 1 631 Park Avenue

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E ATTENTION: James P. O'Reilly, Director .

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g REFERL'NCE: Operating License DPR-28 8>h5mb/

Docket No. 50-271 -

Abnormal Occurrence No. A0-75-12 (24 IIour. Report)

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Dear Sir:

E 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. .

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

? 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.

=

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,,

I G j.

l bM'k Bradford W. Riley '

_ Plant Superintendent -

L 7 WFC/kbd F

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F-8312060034 750618 i= PDR ADOCK 05000271 g S PDR g u-,

@ COPY SENT REGION 2 s