ML20028A976

LER 82-021/03L-0:on 821027,following Use in Routine Sampling Procedure SV-33655,hot Leg Loop B Sample Inside Containment Isolation Valve Failed to Remain Closed.Caused by Malfunction of Limit Switch.Switch Replaced

ML20028A976
Person / Time
Site:	Prairie Island
Issue date:	11/17/1982
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028A973	List: ML20028A972 ML20028A976
References
LER-82-021-03L, LER-82-21-3L, NUDOCS 8211290271
Download: ML20028A976 (1)

Text

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7 8 68 74 EVENT DESCRIPTION AND PROB A8LE CONSEQUENCES h l o l 21 l Following use in a routine sampling procedure, SV-33655, Hot Leg Loop B Sample Inside l o 3 l Containment Isolation Valve, failed to remain closed. The valve will close on a l o 4 l containment isolation signal, but would reopen on reset of containment isolation. l o s l No ef fect on public health and safety since redundant valve was operable. Recent l 0 s I similar event was R0 82-13. l l o l 71 I l 101811 I C DE CODE S BC E COMPONENT CODE SUBC DE SU E 7

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_ SEQUENTI AL OCCURRENCE REPORT REVISION LER RO EVENT YE AR REPORT NO, CODE TYPE NO.

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32 KEN ON ON PLANT ETH HOURS 22 S B IT D FOR 8. SUPPLIE MANUFACTURER j [33X_jgl34Bl@ WQ 35 lZl@

36 l0 l0 l0 l0 l 3/ 40 Wg 41 l Y [g 42 l L lg , l V l 0 l 3 l 0 lg 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l1 l o l l Apparent malfunction of an internal limit switch in a Valcor 3/8" solenoid valve l 1 i l Model No. V526-5295-5. Manual valve in series has been placed under administrative 1 2 l control. The faulty valve will be repaired at the refueling outage now in progress. I 11131 l l 11 141 1 I 7 8 9 80 ST S  % POWER OTHER STATUS dis O RY DISCOVERY DESCRIPTION 1 5 (_Ej@ l0l9l5l@l NA l l A l@l Personnel observation l ACTIVITY CO TEN' RELE ASED OF RELE ASE AMOUNT OF ACTivlTV LOCATION OF RELEASE i 6

@ l10Zl@l NA l l NA l 7 8 9 11 43 45 80 PERSONNEL EXPOSURES NUV8ER TYPE DESCRIPTION 7

[ 0 l 0 l 0 l@l Z l@l NA l 1 PERSONNEL INJU IES NoveER DESCniPTicNh i x NA 8 9 l 0 l 0 l 0 l@l12 l 11 80 LOSS OF OR DAMAGE TO FACILITY TYPE D E SCRipTION y @l NA l 7 8 9 10 80 PU B L ICITY gg((29Q271 @21117 NRC USE ONLY issuEo ilA PDR ADOCK 05000282 12 l 801 F 9 Wh[ 10 DESCRIPTION s PDR l 68 69 l l l l l l l l l l l l l :2 80 li; c

nstad 612-388- 1121 NAME OF PREPARER PHONE: {