ML20010H849

Ro:On 810909,HPCI Injection Valve Would Not Open Automatically During Reactor Level Decrease.Caused by Valve Motor Failure.Valve Opened Manually

ML20010H849
Person / Time
Site:	Hatch
Issue date:	09/15/1981
From:	Manry M GEORGIA POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
PM-81-788, NUDOCS 8109290353
Download: ML20010H849 (2)

Text

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Georg:a Power Company e

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e Eaxfey Georg a 315?3 Teleonone 912 367 7781 912 537-9444 ,-

Edwin i. Hatch Nuclear Plant 3 , n- -

3" Georgia Power the s*>utten doatc system September 15, 1981 PM-81-788 PLANT E. I. HATCH f*'(?lN/W M ,

Special Report g fQg '(

Docket No. 50-366 g k g,s' ),

United States Nuclear Regulatory Comission fQ' ek% d) ~

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Office of Inspection and Enforcement - ,A / //

Region II h,/./i  %, T J'

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Suite 3100 101 Marietta Street "'#/I

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Atlanta, Georgia 30303 i

ATTENTION: Mr. James P. O'Reilly Pursuant to Section 6.9.2 and 3.5.1 action: c. of Hatch Unit 2 Technical Specifications, please find attached Special Report, v dt, -

L M. Manry Plant Manager MM/SXB/bje xc: G. F. Head J. T. Beckham, Jr.

I T. V. Greene C. T. Jones S. X. Baxley Control Room File M-E8 7g Document Control s

/I 8109290353 810915 7h PDR ADOCK 05000366 S PDR.

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• N Special Report Georgia Power Company Plant E. I. Hatch Docket No. 50-366 r September 15, 1981 HPCI INJECTION INTO REACTOR On 9-9-81 at 1024, a reactor scram was received from a Group I isolation.

HPCI was manually started and injected to restore reactor water level.

Once water le'!el was re-established the injection valve was closed and

. HPCI was lined up in full flow test to the condensate. storage tank. When reactor level decreased, an attempt was made to reinject with HPCI. How-ever, the injection valve did not reopen due to valve niotor failure. The injection valve had to be opened manually to allow HPCI injection. HPCI then injected until it tripped on high water level. HPCI was restarted intermittently to maintain reactor level and pressure and to remove decay heat.

As of the date of this report there have been twenty (20) incidents with HPCI injections into the reactor vessel.

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