ML20038C258

LER 81-035/03L-0:on 811030,while Performing Dis 1600-3, Reactor Bldg to Torus Vacuum Breaker Valve 1601-20B Failed to Open.On 811102,valve Failed Again.Caused by Failed Versa Solenoid VGS-4522 U-3BC-10F 31.Solenoid Replaced

ML20038C258
Person / Time
Site:	Dresden
Issue date:	11/23/1981
From:	Whalen R COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20038C253	List: ML20038C252 ML20038C258
References
LER-81-035-03L-02, LER-81-35-3L-2, NUDOCS 8112100324
Download: ML20038C258 (3)

Text

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(7 77)

LICENSEE EVENT REPORT

• .CONTROL BLOCK: l l 1

l l l l 6

lh (PLEASE PRIMT OR TYPE ALL REQUIRED INFORMATION) l o l 81 9l l I l LICENSEE 7

L l D lCCCE R l S l143 l@l 15 0 l 0 l- l 0LICENSE l0 l0 NuM8ER l0 l 0 l - l 0 l 0 25l@l 264 l 1LICENSE l 1 l 1TYPE l 140l@l 57 CAT l

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CON'T IQltl 5C[Re60 l L l@l 015 DOCKET l 0 l 0NUMBER l 0 l 2 l 4 68l9 hl1 l0EVENT l3 l DATE 0 l B l 174l@l 1 l 1 l 2 l 3 l 8 l1 lh 7 8 61 69 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lo l2l lAs Rx. Bldg. to Torus Vacuum Breaker Surveillance DIS 1600-3 was being performed durine I I o I a i Inormal unit operations, Reactor Building to Torus Vacuum Breaker Valve 1601-20B failed tol I o 14 l lo pen. The 1601-20A valve was immediately proven operable. Although the 1601-20B valve l

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101 s 1 ldid cycle properly af ter its operator was jarred, it again f ailed on 11/2/81 and was I l o is I llocked closed per Tech. Spec. 3.7.A.3.b. Minimal safety significance since the redundand 1017 l l valve was operable during both events. There was no danger to the public health and l

,g,3, [ safety. Similar occurrence reported on Docket #50-237 by R.O. 78-54. I E CCCE S 8C E COMPONENT CODE . SUSCOdE SU E ICISI l s l A lh lE lh

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7 8 9 10 11 12 h lV l A lL lV l0 lP [h l E l@ l Z l @

13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LE RiRO EVENT YEAR REPORT NO. COCE TYPE N O.

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h gE l8 l1 l l-l l0l3l5l l/l l0 l 3l lL l l-l l0l

_ 21 22 23 24 26 27 28 29 3G 31 22

-I N A N ON P T M MOURS SB 1 FOR B. PLE MANUF RER lN lh lN lh lVl0l4l5lh l33^ l@l34z l@ l zl@ l36z l@ 1010 l 0 I 0 l IN lh 35 37 40 el 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l i j a l l The cause of the problem was found to be a failed Versa Solenoid (number VGS-4522 U-3BC-l li li j l10F 31). The Solenoid was replaced and the valve was then tested to verifv areer I z_

,,,,, ; operation. No further corrective action was deemed necessarv. l w

I 11 131 l l

_e Iil4l l 1 7 8 9 80 ST  % POWER OTHER STATUS DIS O RY DISCOVERY DESCRIPTION 11 I 5 l l E l@ l 0l 6l 4l@l NA l l B l@l Routine Surveillance l ACTIVITY CO TENT RELEASED OF RELEASE AMOUNT OF ACT1vtTY LOCATION OF RELEASE l1 I 6 8 9 l l Z l h lZ lgl NA l l NA l 7 10 11 44 45 80

,' PERSONNEL EXPOSURES NUM8ER TYPE DESCRtPTION

] l i l 7 l ] 0 l 0 l 0 l@l Z l@l NA l PERSONNE L INJU IES

'" " ' O NA li la 8I 9l 01Nu"d'l"0 l@l l

7 11 12 80 LOSS OF 09 DAMAGE TO FACILITY TV E C ESCRIPTION M-

, l'191l l@l NA l

7 8 9 10 80 ISSU ED DE CRIPTION

• I 2 l o f l N lhl NA l llll1ll11Illl* '

7 8 9 10 8112100324 811123 sa es so.i NAME OF PPEP ARER en 815-942-2920, Ext. 523 2 PHONE:

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DEVIATION REPORT DV R NO.

. Commonwealth Edison -

STA UNIT YEAR N O.

D 3 71 PART 11 Tl TLE OF DEV1 ATION CCCURRED .

Rx. Bldg. to Torus Vacuum Breaker 3-1601-20B Failure to Open 10/30/81 11 35 DATE TIME SYSTEM AFFECTED 1600 PLANT CONDITIONS TESTING Primary Containment Run "

LJ McoE p,p f y,73 1611 496

, LOAD (MWE) YES NO CESCRIPTION OF EVENT During DIS 1600-3 Surveillance, 3-1601-20B (Ex. Bldg. to Torus Vacuum Breaker) failed to open.

l Upon investigation by Shif t Foreman, Solenoid Valve found to be verv hot to touch and after l

tapping on Versa and Solenoid Valves, 3-1601-20B valve opened.

l DESCRIPTION OF CAUSE l Suspect Versa or Solenoid Valve henging up preventing proper air flow to air operator.

OTHER APPLI CABLE INFORMATION Durine time of occurance 3-1601-20A valve was onerable (T.S. 3.7.A.1 Reference). 3-1601-20B cycled four (4) times after Versa and Solenoid Valves were tapped and valved operated satisfactorilv.

, EQUIPMENT C YES OR NO. WR NO.

l FAILURE N/A Bob Herbert 10-30-81 O NO 16647

• ESPONSIBLE SUPERVISCR OATE PART a l OPERATING ENGINEERS CCMMENTS The 3-1601-20A valve was immediately tested and proven operable.

f ___

l TYPE OF CEVIATION EVENT OF POTENTIAL SAFETY-TECH SPEC NON-REPORTABLE ANNUAL RELATED REPORTABLE OCCURRENCE PUBLIC INTEREST VIOLATION OCCURRENCE REPORTING WR ISSUED 14 DAY 10CFR21 NO I TICN

_ _ YES{ YES ]

( lXl30 DAY NO NO REPORTABLE CCCURRENCE ACTION ITEM NO.

NUMBER PROMPT ON-SI TE NOTI FICATION R. M. Ragan 11-2-81 0800 X$0(- 81-35/C31r-0 . T I TI.E DATE TlME TITLE CATE TIME 24-HOUR NRC NOTIFICATION PROMPT OFF-SITE NOTI FICATION TPH N/A F. Palmer 11-2-81 1419

, _ , , , REGION iii DATE TIME TI TL E I DATE TIME TGM N/A

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REGICN 111 & COL CATE TIME TITLE DATE TIME RESPONSI BLE COMP ANY O FFI CER I NFO RMEO O F 10CFR21 OON D I T! ONS AND THETA D EDO o T TO NPC

• TITLE DATE_ i i M r.

REVI EW AND CCMPLETED Michael Wright 11-2-81 OPERATING ENGiNttn / OATE f

C BY STATION REVIEW gg fr g -

DATE DN IA '

RESOLUTION APPROVEC AND N AUTHORI ZED FOR CI STRI BUTION '

ATION SUPERINTENDENT '

44-$174 10-77 (F0pu 15-51-7)

CATE

DEVIAT10N REPORT

' /

(' v7 M

' DV R NO.

- Commonwealth Ed.ison -

STA UNIT YEAR N O.

D 12 3 ~81 ~ 72 PART 1l Tl TLE OF DEV1 ATION OCCURRED .

Failure of Rx. Bldg. to Torus Vacuum Breaker (3-1601-20B) to Open. 11-02-81 0705 DATE TIME SYSTEM AFFECTED1600 PLANT CONDITIONS TESTING Primary Containment MODE Run PwRfuwT) 1902 , LOAD (MWE) 4RA YES NO DESCRLPTION OF EVENT As a result of the recent f ailure of Rx. Bldg. to Torus Vacuum Breaker 3-1601-20B to cpen. an attempt was made to verify valve operability. Upon attempt to open Vacuum Breaker from the Control Room, the valve would not open.

DESCRIPTION OF CAUSE Previous failure required Versa and Solenoid Valve to be tapped in order to get valve to operate.

Suspect same cause. .

_OTHER APPLICABLE INFORMAfl0N 3-1601-20A valve verified to be operable. 3-1601-20B entered in degraded equipment loc.

3-1601-20B to be locked closed per Tech. Specs.

ECUIPMENTl 5.3 YES DR NO. WR NO.

FAILURE N/A O NO 16647 ,

9ESPONSIBLE SUPERVISOR OATE PART 2 l OPERATING ENGINEERS COMMENTS The 3-1601-20A was tested and proven operable, the 3-1601-20B valve is beine restrained (locked) in the closed position ner Tech. Soec. 3.7.A.3.b. -

TYPE OF CEVIATION EVENT OF POTENTI AL SAFETY-TECH SPEC NON-REPORTABLE ANNUAL RELATED REPORTABLE OCCURRENCE PUBLIC INTEREST VIOLATION OCCURRENCE REPGRTI NG WR ISSUED 1 1 14 DAY X

YES[ YES {

30 DAY NOTI F1 CATION _ NO NO 6.6.B.2.b REPORTABLE CCCURRENCE ACTION ITEM NO.

NUMBEF PROMPT ON-SITE NOTI FICATION Combined with R. M. Ragan 11-2-81 0800 E(X 81-35/03L-0 TITLE DATE TIME (DVR 12-3-81-71)

TITLE CATE TIME 1

24-HOUR NRC NOTI FI CATION (Courtesy) PRC'4PT OFF-SITE NOTI FICATION 7 Tryr- Tom Tongue 11-2-81 0730 F. Pai ner 11-2-81 1419

[ REGION III DATE TIME TITLE DATE TIME TGM REGION Ii1 & COL CATE TIME TITLE DATE TIME i ESPONSI BLE CCMP ANY OFFI CER INFORMED OF 10CFR21 '

CONDITIONS AND Tutto DEPO AT r0 NPC +

T t TL E DATt i t M t.

REV1 EW AND COMPLETED - Michael Wright 11-2-81 OPERATING,ENGiNEtd CATE A CEP A BY STATION REVIEW g,,__, gf 4, - -

DATE N '3 N -

RESOLUTION APPROVEC AND bd AUTHORIZED FOR ClSTRIBUTION S TION SUPERINTENCENT

$6-$176 to-77 CATE (FORu IS St*tt

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