05000334/LER-1981-047-01, /01T-0:on 810606,emergency Cooling Water Supply Valve to High Head Safety Injection Pumps Was Discovered Unlocked & Closed.Cause Not Stated.Valve Opened.New Chain & Lock Installed.Investigation Underway

/01T-0:on 810606,emergency Cooling Water Supply Valve to High Head Safety Injection Pumps Was Discovered Unlocked & Closed.Cause Not Stated.Valve Opened.New Chain & Lock Installed.Investigation Underway

ML19351A168
Person / Time
Site:	Beaver Valley
Issue date:	06/19/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19351A166	List: 05000334/LER-1981-047, Forwards LER 81-047/01T-0 05000334/LER-1981-047-01, /01T-0:on 810606,emergency Cooling Water Supply Valve to High Head Safety Injection Pumps Was Discovered Unlocked & Closed.Cause Not Stated.Valve Opened.New Chain & Lock Installed.Investigation Underway
References
LER-81-047-01T, LER-81-47-1T, NUDOCS 8106260170
Download: ML19351A168 (2)

LER-1981-047, /01T-0:on 810606,emergency Cooling Water Supply Valve to High Head Safety Injection Pumps Was Discovered Unlocked & Closed.Cause Not Stated.Valve Opened.New Chain & Lock Installed.Investigation Underway

Event date:
Report date:
3341981047R01 - NRC Website

text

U. S. NUCLEAR REGULATORY COMMISSION Nec FORM 364 LICENSEE EVENT REPOtt am CONTROL BLOCK: l l

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l l lh (PLEASd PRINT OR TYPE ALL REQUl E2 INF%MATIONI 1

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8 9 UCENSEE COQE 14 15 LICEN$E NUMSER 25 26 LICENSE TYPE JG

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CON *f lolIl 7

8 to 61 DOCKET NUMSER 68.

69 EV ENT QATE 74 75 REPORT OAT E 80 EVENT DEStRIPTION AN9 PROSA8LE CONSEQUENCES bio At approximately 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> on 6/6731, during his normal plant tour, the primary l o 121 l auxiliary building operator found the emergency cooling water supply valve to the l

gl high head safety injection (HHSI) pumps unlocked and closed.

Safety implications l-

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g ; dde to the closure of this valve would have been a loss of HHSI capability through j

ml that flow path. Low pressure safety injection was available at all times.

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33 16 JS 36 37 40 48 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 11131 l At 0115 hours0.00133 days <br />0.0319 hours <br />1.901455e-4 weeks <br />4.37575e-5 months <br />. the Nuclear Shift Foreman verified th ealve oven and installed a l

li lil I new chain and lock. A verification of all locked and sealed Engineered Safety 1

The I Features equipment uas then begun and satisfactorily completed at 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br />.

1,17, l l i 131 I results of an ongoing security investigation will be cresented in a follow-ep l

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Attachment To LER 81'-047/01T Beaver Valley Power. Station -

Dwinesne Light Company-

' Docket No. 5T-334.

' A' joint Duquesne ;ight, NRC investigation was commenced following "this incident.. The results'of this investigation will be noted,-but

.because of-its propr etary nature not ' included in a follow-up report.

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