ML19351E624

LER 80-065/03L-0:on 801105,five Class 1 Hydraulic Snubbers Removed from Svc When Reactor Was Not in Shutdown Phase. Caused by Requirement to Verify Bleed Rate Zero.Snubbers Tested & Replaced

ML19351E624
Person / Time
Site:	Fort Saint Vrain
Issue date:	12/05/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19351E616	List: ML19351E615 ML19351E624
References
LER-80-065-03L, LER-80-65-3L, NUDOCS 8012100537
Download: ML19351E624 (1)

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NRC FORM 366 U. S. NUCLEAR REGULATSW COMMISSION (7 77b LICENSEE EVENT REPORT CONTROL BLOCK: l 1

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6 lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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EVENT DESCRtPTION AND PROBA8LE CONSEQUENCES h 10121 IDuring normal operation, while verifving hydraulic snubber bleed rate, five Class 1 1

,g,3, y hydraulic snubbers were removed from service when the reactor was ne'. in ene shutdown j

,g,,, ;or refueling condition. This consticutes operation in a degraded mode allowr.ble by ]

,,,,, j LCO 4.3.10 and is reportable per Fort St. Vrain Technical Specification AC 7.5.2(b)2. ;

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J4 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h ji!0; lNon-bleeding hydraulic vent stack snubbers were renlaced bv snubbers with bleed cana- 1 I*iiilbility. Engineering evaluation determined that the bleed rate should be zero ed the

,, ;;; l snubbers were adjusted to zero bleed rate in niace. Five snubbers were renoved. I ii;3; l tested, and replaced to verifv that the actual bleen rate was zero.

• l It tai l 30 7 8 9 ST *6 POWER OTHER STATUS 15 O RY Of SCCVERY OESCRIPT?ON l

Ii 15 l l E l@ l 0l 5 l 6 Ql N/A l l C l@l Seismic Evaluation ACTIVITY CC TENT RELEASEO OF RELEASE AMOUNT CF ACTIVITV LCCATICN CF RELEASE l1 l68 l9 l Z l h 10l Zlhl N/A l l N/A l 7 11 44 45 ao 8ERSONNEL EXPOSURES NUveER TYPE DESCRIPTICN l

lt l 7 l 1010 l 0 l@l Z l@l N/A PER$CNNEL NJL IES NOV8ER CESCRIPTION l

li 14 3l 910-1010 l@l12N/A 7 11 30 LOSS OF CR OAUACE To FACILITY Q 1 TYPE DESCRIPTION v lr19IL:_l@lN/A i  !

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NAME OF PREPARER -'

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- 80121005371 .