ML20134Q080

Part 21 Rept Re Deficiency of Wkm Model 70-13 Pneumatic Actuators Manufactured by Anchor Darling Valve Company Due to Incorrect Calculation of Bench Set & Supply Air Set Points.All Affected Valves Have Been Reviewed & Evaluated

ML20134Q080
Person / Time
Site:	LaSalle
Issue date:	11/27/1996
From:	Subalusky W COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-PT21-96 NUDOCS 9612020106
Download: ML20134Q080 (8)

Text

FROM CENTRAL FILE FAX NO.s 2268 11-27-96 02:07P P.02 ;

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u. s ., s a <. aa November 27,1996 United States Nuclear Regulatory Commission Attention: Document Control Desk t Washington, D.C. 20555

Subject:

LaSalle County Station Units 1 and 2 10 CFR Part 21 Notification 9605 Final Report NRC Docket Numbers 50 373 and 50-374 i

Reference:

Letter from W. T. Subalusky to US Nuclear Regulatory Commission, LaSalle County Station Units 1 and 2,10 CFR Part 21 Notification 9605, dated October 4,1996.

Enclosed is Comed's 10 CFR Part 21 Notification of the deficiency of WKM  !

model 70-13 Pneumatic Actuators manufactured by the Anchor Darling  !

Valve Company and in use at LaSalle County Station. This notification is submitted in accordance with the requirements of 10 CFR 21, Section 21.1(b). An interim notification, reforenced above, had been made l in accordance with 10 CFR Part 21 Section 21.21 (a)(2). I i

l If there are any questions or comments concerning this letter, please refer  ;

them to me at (815) 357-6761, extension 3600. I Respectfully.

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W. T. Subalusky Site Vice President I! ,

LaSalle County Station !h l l

Enclosure 7g cc: A. B. Beach, NRC Region lli Administrator M. P. Huber, NRC Senior Resident inspector - LaSalle D. M. Skay, Project Manager - NRR - LaSalle '

n'~ a 0 0'2 G F. Niziolek, Office of Nuclear Facility Safety - IDNS l DCD - Licensing (Hardcopy: Electronic: )

Central File l

38A" 28an Zeasa?72 l S PDR l

! FROMs CEN7RAL FILE 1

FAX No.* 2268 11*27-96 02:07P P.03

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i l I 10CFR Part 21 Notification l 10 CFR Part 21 Report (File 96-05) l WKM, MODEL1013 PNEUMATIC ACTUATORS-

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INCORRECT ElECTIVE DIAPHRAGM AREA Anelicahilits This nuttpcation is submitu: - accordance with the requirements of10CFR Part 21,  ;

Section 21.1 (b), An interim notifconon hadbeen previously made on October 4th.

1996 in accordance with 10CFR Part 21 Seaton 21.21(a)(2). '

identification of Facilits and Cemnonent LaSalle County Station. Units one and Tuo Commonwealth Edison Chicago. litmois

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WKAf. Afodel 70-13 pneumatic actuators (si:es 35, 70,140 280) l

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Identinentinn of Camnonent Manufacturer Anchor Darling Valve Company i Natine of Defect Anchor Darling Valve Comy~nyperformedefectts e diophragm areo (EUA) testing on the various WKot.

Model 70-13 pneumatic actuators (sizes 33. 70,140. 280). Theprelimnuary test results indicated that the original efective diaphragm area values usedto calculate the bench set andsupply air setpoints were incorrect.

Safety SigniUcunce Potentially, Ihe listed Primary Containment isolation System (PCIS) valve assemblies would not provide adequate xyuem isolation under designed accident condstions. The PCISfunction may not have operated ifrequired i

LaSalle listed valvesUnit is not One is inthese requiredfor ColdShutdown modes, mode and Urtt Two is in Refuel mode. The PCISfun l .gjodated Kafety Sienificance-

} See Licensee Event Report k96-011-00 Time of Discoverv

\ September 28.1996 Corrective Actions From the October 4 1996. nordication:

1.) Allafected valves are being reviewed' evaluated. design changes are being initiated as required It should be notedthat Ihe WKM Series 70-13 actuator is currently manufactured by the Anchor Darling Valve Company andsimilar valves may have been previously manufactured under the Muesco" or "B, S

& B" designatiora.

2) LaSalle is awaiting the publication ofAnchor Dartmg 'sfinal testing report. A final nonfication will be moda at that time.

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Frons CENTRAL FILE FAX HO.s- 2268 11-27-96 02:08P P.04 e

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10 CFR Part 21 Final Reprrt (File 96-05) 2 UodazedCorrective Aertonr i

1) Design changesfor all affected Primary Containment Isolation System (PCIS) andReactor cure Isolation System (RCIC*) valves have been initiatedto make the requiredsetting adjustments to enture adequgte untiltheproblemdesignis corrected margins. Both units willremain in a condition that doesn't require valve desig

2) Licensee Event Report n96-01100 i

Title:

• • Pneumatic valves with less-than-designedefective diaphragm area results in inadequ\

closingforces which mov ofact contamment isolation **

SubmitralDate: October 26. I996.

Docket n030-373 I

3) in the interim report it uas stated that LaSalle uas awaiting the publication ofAnchor Darling i Testing Report and would be making afinal notification at that time. At that time. Anchar Darlin projected datefor completion ofthe report was the mid-October timeframe. As the result ofrecent conversations between Anchar Darling andComEd, it is now LaSalle 's understanding that the project completion date ofthefinal report has beenpushed back to an endofNovember timeframe. in addition.

it is Anchor Darling's statedintention not to release thefinalreport to LaSalle County Station. }

i Conclunon \

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LaSalle County Station 's Licensee Event Report #96-011-00, will befollowed by a supplementalrep

\ be issuedby December 2.1996. The supplementalreport wallprovide an updatedassessmen consequences valves ofthe esent and will be based upon an analysis ofas-found testing data ofthe ufected All questions relatedto the results ofEfective Diaphragm Area (EDA) lesting should be addressed to the Anchor Darling Corporation. ,

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PCIS Valves appear in BoldItalics and are marked with an asterisk *,

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Frons CENTRAL FILE FAX NO.s 2268 11-27-96 02:08P P.05

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10 CFR Part 21 Final Report (File 96-05)

- 3 Number and I ncation of All Defcetive Components Original Name Plate Data Tag /EPN MFGR. l Type Diaph. Fail Mode Supplier (Sq.in.)

1833F019 W.K M 7018 9DRT 70 Close RR Inboard Process Sample Stop*

Controls 1833F020 W-K M 70-18 9DRT 70 Close RR Outboard Process Sample $ top

• Controls 1E51F004 W-K-M 70-29-1DRT 70 Close RCIC Baro Condenser Cond Pump Controls Discharge to RBEDT Upstream Stop 1E51F005 W-K-M 70-29-1DRT 70 Close RCIC Baro Condenser Cond Pump Controls Disenarge to RBEDT downstream Stop 1E51F025 W-K-M 7018 90RT 70 Close RCIC Steam Supply Drain Pot Outlet ControIs Upstream stop 1E51F026 W-K-M s 70-18 9DRT 70 Close RCIC Steam Supply Drain Pot Outlet Controls  !

Downstream stop 1E51F054 WKM 70-18-9DRT 70 Close RCIC Steam Supply Drain Pot Steam Controls trap TIN 001A W K-M 70-291DRTS 70 Close DrywellSuction Upstream Isolation *_

Controls flN001B W K-M 70 291DRTS 70 Close Drywell Suction Downstream

• Controls Isolation 1IN017 WKM 70-291DRTS 35 Close DrywellPneumatic to Drywell*

Controls flN074 WKM 70-291DRTS 35 Close DWPneumatic Dryer Downstream

• Controls Purge Outlet l flN075 W-K-M 70-291DRTS 35 Close DWPneumatic Oryer Upstream

• Controls Purge Outlet 1N62F019A W-K-M 70-291DRTS 140 Close A Offgas Cond. Drain Level Cent Stop Controls 1N62F0198 W-K-M 70-29-1DRTS 140 Close B Offgas Cond. Drain Level Cont Stop Controls 1N62F019C W-K-M 70-29-1DR T S 140 Close C B/Up Offgas Cond. Drain Level Cont Controls Stoo 1N62F019D W-K M 70-291DRTS 140 Close A B/Up Offgas Cond. Drain Level Cont Controls Stop 1N62F025A W-K-M 70-29-1 DRTS 280 Close A Offgas cooler Cond inlet stop Controls ,

1N62F0258 W-K-M 70-29-1DRTS 280 Close B Offgas Cooler Cond Inlet stop Controls '

1N62F042 W-K-M 70 29-1DS 280 Open Offgas Charcoaf Absorber Train inlet Controls l Stop i l

1N62F043 W-K41 70-29-1DR TS 280 Close Offgas Charcoal Absorber Train  !

Controls Bypass Stop 1N62F047 W-K-M 70 29-1DRTS 280 Close Offgas Charcoal Absorber Train 2 i Controls Bypass Stop 1N62F048 W-K-M 70-29-1DS 280 Open Offgas Charcoal Absorber Train 2 Inlet

Controts Stop l 1N62F049 W-K-M 70-291DRTS 280 Close Offgas Charcoal Absorber Train 1 Controls Bypass Stop i

1N62F057 W K-M 70-291DRTS 280 Close Offgas Discharge to Stack i Controls PCIS Vakes appear in BoldItalics and are marked with an usterM *.

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rpons CENT L FILE FAX NO. 2268 11-27-96 02:09P P 06

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10 CFR Part 21 Final Report (File 96-05) 4

1N62F394 Muesco 70-13-1 D 280 Open Offgas Charcoal Absorber Train 1 1RE024 W*K M Outlet Stop 70 29-1DRTS 70 Close DWEquipment Drain Inboard' Controls Isoletion 1RE025 W.K-M 70 29-1DRTS 70

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Close DW Equipment Drain Outboard

• Controls isolation 1RE026 W K-M 70 291DRTS 35 Close DW Equipment Drain Sump Recirc~

Controls Valve 1RE029 W K-M 70-291DRTS 35 Close DWEquipment Drain Sump

• Controls Discharge Valve 1RF012 WKM 70-291DRTS 70 Close DWFloor Drain InboardIsolation*

Controls 1RF013 W-K M 70-29-1DR TS 70 Close DWFloor Drain OutboardIsolation*

Controls 2B33F019 W-K M 7018 90RT TO Close Controls RR Inboard Process Sample Stop*

2833F020 WKM 7018 9DRT TO Close RR Outboard Process Sample Stop*

Controls 2E51F004 W-K-M 70-291DRT 70 Close l RClC Baro Condenser Cond Pump Controls  !

2E51F005 Discharge to RBEDT Upstream Step W-K-M 70-29-1DRT 70 Close RClO Baro Condenser Cond Pump Controls 2E51F025 Discharge to RBEDT downstream Stop l W-K-M 70-18 90RT 70 Close RCIC Steam Supply Drain Pot Outlet Controls l 2E51F026 Upstream stop W-K-M 70-18-90RT 70 Close  :

RCIC Steam Supply Drain Pot Outlet Controls l 2E51F054 Downs' ream stop '

W-K-M 70-18 9DRT 70 Close RCIC Steam Supply Drain Po: Steam Controls  ;

l ZIN001A W-K-M 70 291DRTS 70 Close Drywell Suction Upstream isolaten*

R l Controls l 21N001B WKM 70-29-1DR TS 70 Close Drywell Suction Downstream * '

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Controls Isolation 2iN017 WKM 70 291DRTS 35 Close DrywellPneumatic to Drywell' Controls 2iN074 W-K-M 70 291DRTS 35 Close DWPneumatic Dryer Downstream

• Controls Purge Outlet 21N075 W K-M 70 2w-nUKIS 35 Close DWPneumatic Dryer Upstream

• l Controls Purge Outlet '

2N62F019A W-K-M 70 29-1DRTS 140 Close A Offgas Cond. Drain Level Cont Stop Controls 2N62F019B W-K-M 70-29-1DRTS 140 Close B Offgas Cond. Drain Level Cont Stop Controls 2N62F019C W-K-M 70 29-1DRTS 140 Close C B/Up Offgas Cond. Drain Level Cont l Controls ,_

j Stop 2N62F019D W-K-M 70-29-1DRTS 140 Close A 8/Up Offgas Cond. Drain Level Cont l Controls Stop l 2N62F025A W-K M 70-29-1DRTS 280 Close A Offgas Cooler Cond Ir.let Stop Controls 2N62F025B W-K-M 70-291DRTS 280 Close B Offgas Cooler Cond Inlet stop Controts 2N62F042 W-K-M 70-29-1DS 260 Open Oftgas Charcoal Absorber Train Inlet

Controts Stop 2N62F043 W-K-M 70 29-1DRTS 280 Close Offgas Charcoal Absorber Train Controls Bypass Stop PCIS Valves appest in Bold Italics and are marked witts an asterisk *-

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l FROMs CENTRAL FILE FAX NO.8 2268 11-27-96 02:09P P.07 10 CFR Part 21 Final Report (File 96-05) 5 2N62F047 W K-M 70-291DRTS 280 Close Offgas Charcoal Absorber Train 2 Controis i 2N62F048 W K-M Bypass Stop 70-29-1DS 280 Open l

Controls Offgas Charcoal ADsorber Train 2 inlet I 2N62F049 W-K-M Stop i 70-29-1DRTS 280 Close Controls Offgas Charcoal Absorber Train i 2N62F057 W.K-M Bypass Stop 70-29-1DRTS 280 Close Controls Offgas Discharge to Stack l

2N62F394 Muesco 70-13-1D 280 Open Offgas Charcoal Absorber Train 1 )

\ 2RE024 WKM Outlet Stop 70 29-1DRTS 70 Close DW Equipment Drain inboard

• Controls Isolation l 2RE02$ WKM 70-291DRTS 70 Close CW Equipment Drain Outboard *

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Controls isolation 2RE026 WKM 70-29-1DRTS 35 Close DW Equipment Drain Sump Recirc*

i Controls Valve 2RE029 W M.M 70 2910RTS 35 Close OWEquipment Otuin Sump

• Controls Discharge Valve i

2RF012 W-K-M 70-291DRTS 70 Close DWFloorDrain inboartfisolation*

Controls 2RF013 W.K-M 70-2910RTS 70 Controls Close DWFloorDrain OutboardIsolation*

Contacts Mark Smnh AOVComponent Engmeer LaSalle County Stanon Commonweahh Edison 2601 North list Re>ad  ;

Marseilles, Illinois 61341

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(815) 337-6761 I

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1 PCIS Valves appear in Bold Italics and are marked with an asterisk

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GENERAL INFORMATION or OTHER i EVENT NUMBER: 31093 LICENSEE: LASALLE COUNTY STATION NOTIFICATION DATE: 10/04/96 CITY: REGION: 3 NOTIFICATION TIME: 15:35 [ET]

COUNTY: STATE: IL EVENT DATE: 09/28/96 ,

LICENSE #: AGREEMENT: Y EVENT TIME: 12 : 00 [CDT)

DOCKET: LAST UPDATE DATE: 11/27/96 NOTIFICATIONS NRC NOTIFIED BY: MR. SUBALUSKY HQ OPS OFFICER: DOUG WEAVER VERN HODGE NRR EMERGENCY CLASS: NOT APPLICABLE 10 CFR SECTION:

CCCC 21.21 UNSPECIFIED PARAGRAPH EVENT TEXT PART 21 NOTIFICATION ON WKM MODEL 70-13 PNEUMATIC ACTUATORS l

ANCHOR DARLING VALVE COMPANY PERFORMED EFFECTIVE DIAPHRAGM AREA (EDA)

TESTING ON THE VARIOUS WKM MODEL 70-13 PNEUMATIC ACTUATORS (SIZES 35, 70, 140, 280). THE PRELIMINARY TEST RESULTS INDICATED THAT THE ORIGINAL EFFECTIVE DIAPHRAGM AREA VALUES USED TO CALCULATE THE BENCH SET AND SUPPLY AIR SET POINTS WERE INCORRECT. THESE ACTUATORS ARE USED ON VARIOUS PRIMARY CONTAINMENT ISOLATION VALVES AND THESE VALVES MAY NOT PROVIDE ADEQUATE SYSTEM ISOLATION UNDER DESIGN ACCIDENT CONDITIONS.

LASALLE UNIT ONE IS IN COLD SHUTDOWN AND UNIT TWO IS IN TFr " -"JJL MODE.

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• UPDATE RECEIVED BY FAX AT 1508 ON 11/27/96, TAKEN BY WEAVER * *

• DESIGN CHANGES FOR ALL AFFECTED PRIMARY CONTAINMENT ISOLATION SYSTEM (PCIS)

AND REACTOR CORE ISOLATION SYSTEM (RCIC) VALVES HAVE BEEN INITIATED TO MAKE THE REQVIRED SETTING ADJUSTMENTS TO ENSURE ADEQUATE DESIGN MARGINS. BOTH l UNITS WILL REMAIN IN A CONDITION THAT DOESN'T REQUIRE VALVE DESIGN OPERATION UNTIL THE PR.OBLEM IS CORRECTED.

THE LICENSEE SUBMITTED AN LER ON THIS TOPIC ON 10/28/96. AN UPDATED LER WILL BE SUBMITTED ON 12/2/96. THE HOO NOTIFIED VERN HODGE OF THIS UPDATE.

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F R 0 f18 CENTRAL FILE F 5t X NO.. 2268 11-27-96 02:07P P.01 i .

l Date 11/27/96

( Number of paaes includino cover sheet 7 I

TO: NuclearRegulatory FROM: W. T. Subalusky I

Commission LaSalle County Nuclear \

OPS Center Power Station l

l i Phone 815-357-6761 FAX Phone 301-616-5151 Fax Phone 815-357-6761, ext. 2502 VERIFICATION 301 816 5100 RE: LaSalle County Station Units 1 and2 10CFR Part 21 Notification 9605 FinalReport l

REMARKS; @ Urgent D Foryourreview 0 Reply ASAP D Please Comment Attached are the above-entitled documents including cover letter; and 10CFR Part 21 Notification.

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