ML20101M922

Part 21 Rept Re Replacement Swing Arm Not Being Completely Interchangeable W/Original Part.Initially Reported on 920116.Vendor Will Inform Customers of Potential for Stated Interference Between Stud & Valve Body

ML20101M922
Person / Time
Site:	Comanche Peak
Issue date:	06/30/1992
From:	Godwin G BW/IP INTERNATIONAL, INC. (FORMERLY BYRON JACKSON
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
REF-PT21-92 NUDOCS 9207090081
Download: ML20101M922 (7)

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Pu m 2is ses :ano Pump omien 30 June 1992 Administrator Office of Inspection and Enforcement, Region V -

U. S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Crook, California 94596 l

Centlemen:

'1his letter transmits a nocification of defects and nencem.ormancas required by 10CFR - Part 21.

The attached notification, CFRN-9001, i

reports a condition which occurred at Texas Utilities, Comanche Peak Steam Electric Station.

Vesy truly yours, 0

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Manager Los Angeles operations CCC/sh Attach:

3 Copies of Notification i

Mr. F. J. Burgers. Vice Prasident Operations ec:

Mr. E. B. Fiske. Director of Engineering i

Mr. R. D. Ham, Manager of Quality i

Mr. F. Costanzo, Mana5er of Engineering Dr. K. A. Huber. Technical Liaison j

Mr. W. A. Klenner. Product Manager i

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(SENT-SY:PW/IP _

.6-30-92 i '15

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Ib NRC OPERATIONS CIR. ;# 3/ 7 i

1 la CFR PART 21 NOTIFICATION-(Reference No.- CFRN 9201) i NAME AND ADDRESS OF THE INDIVIDUAL OR INDIVIDUALS INMRMING THE COMKISSION:

Mr. C. C. Godwin BW/IP International, Inc.

Pump Division 14s Angeles Operation 2300 E.-Vernon Avenue Vernon CA 90058 (213)1587-6171 4

a For Technical Inforuation contact:

Dr. - Kent Huber h

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IDENTIFICATION OF THE FACILITY, _ THE AcrIVITY, OR THE EASIC COMPONENT SUPPLIED FOR SUCH FACILITY OR SUCH. ACTIVITY WITHIN THE UNITED STATES

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VEICH FAILS TO COMPLY OR CONTAINS A DEFECT:

' texas -Utilities-Comanche Peak Staam Electric Station, i

Basic Component, 3" - 900 lbs.-Swing Check Valve Serial No. 75510 Part No. 72543.- Texas Utilities Tag No. ISV-048.=

Part No. 72543 (Swing Arm) iscalso used in other_ valve sizes.

Exhibit A contaius' a listing _ of original inscallations.-

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. IDE!rIIFICATION OF THE FIRM CONSTRUCTING THE-FACILITY OR SUFPLYING THE.

I BASIC COMPONENT WHICH FAILS'TO. COMPLY OR CONTAINS A DEFFCI:

'BV/IP.Internacional, Ine;;

Successor to:

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Borg-Warner Nuclear valve Division--

7500 Tyrone Avenue

. Van Fuys;'cA 91409 1

l-Page 1 of 3.

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!,SEhT B,Y:8W. IP

6-00-92 ;

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-LAMNRC OPERATIONS CTR?;*'4/ 7 g-10 CFR, Part 21, Notification i

(Ref. No. CFRN 9201) i 1

NATURE OF THE DEFECT OR FAILURE TO-COMPLY. AND THE SAFETY HAZAED URICH

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IS CREATED OR COULD BE CREATED BY SUCH DEFECT OR FAILURE TO CONFLY:'

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Texas Utilities reported the replacement Swing Arm to be not'

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completely interchangeable with.the criEinal part.- Factory-j' inspection of the subject part showed critical dimensions to be the same as on the original part except for the elongated j

stud hole provided for jumproved_ seating.

Dimensional evaluation i

of the valve components show no detrimental contact 6r interference cf internal parts even under the most adverse:colorance stack.up l

conditions.-_ The replacement ara is thus considered equivalent in j

fit, form and function.

t The interference. study performed for this evaluation, revealed, j

that under extreme-tolerance' stack-up, the stud / disc assembly.

may_stop-'in a partially open position against the relieved section at the bottom of the. valve throat. and not against the-i stop (see illustration). The amount of contact interference

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is greater in valves with arms fabricated af ter August 1981.:-

i Should this extreme situation occur, there is sufficient flow i

area in the body to allow full flow through'the-valve. The

- more likely situation-is. that the disc / stud assembly will rotate in the bushing under impingement flow forces.. This l

rotation' removes any interference that may occur between the

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atud and body and allows the valve to fully open.

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THE DATE ON WHICH THE INFORMATION OF SUCH DEFECT OR FAIu!RE TO COMPLY l

WAS ORT 1INED:

The incident was initially reported to 4W/IP International' on 16 January 1992 Additional,information has' subsequently F

been supplied by Texas Utilities,

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IN THE CASE OF A BASIC COMPONENT WHICH CONTAINS A DEFECT OR FAILS TO COMPLY, THE NUMBER AND LOCATION'0F ALL SUCR COMPONENTS IN USE AT.

SUPPLIED FOR, OR BEING SUPPLIED FOR'ONE OR.MORE-FACILITIES OR ACTIVITIES SUBJECT TO THE REGUIATIONS IN THIS PART:

- Investigation of the subject components has' indicated no defects:

or icilure to comply.-nor has BW/IP received'any notification of-fag ur s in like components in cperating plants with many years of service (Sab h hibit A).

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Mr BY:BW/IP

6-30-82 i 15:35 ;

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'10 CFR, Part 21, Notification (Ref. No.-CFRN.9201)

THE CORRECTIVE ACTION VHICH HAS BEEN, IS BEING, OR WILL B5 TAEEN; THE NAME OF THE INDIVIDUAL v1 ORGANIZATION RESPONSIBLE MR THE ACTION; AND THE LENGTH OF TDit THAT HAS BEEN OR WILL BE TAKEN TO COMPLETE THE ACTION:

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Based on the design evaluation _and from field experience of Swing Check Valves of similar design, no corrective actions were identified.

ANY AWICY REUTED TO THE DEFECT OR FAIIERE TO COMPLY ABOUT THE.

FACILITY, ACTIVITY, OR BASIC COMPONENT THAT HAS BEEN, IS BEING,-DE WILL BE CIVEN TO YURCHASERS:

BW/IP will inform customers of the potential for the stated interference between the stud and valve body by issuing a Technical Service Bulletin.

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Page 3 of 3

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SENT BY:BW/IP-6-30-82 ;

18:35 ;

LA04 NRC OPERATIONS CIR. ;* 6/ 7 i

EKRIBIT A.

10CFR, PART 21 NOTITICATION (REF. NO. CFRN-9201) r.

USER LIST BU/IP INTERNATIONAL, INC.

2-1/2 AND 3 INCH SWING CHECK VALVRS l

INCORPORATING SUING ARK P/N 72543 i

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Boston Edison. Pilgrim Station.

2.

Texas Utilities Generating Co., Comanche Peak Station.

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Washington Public Power Supply System. UNP-3 & 5 4

Tennessee Valley Authrity,- Browns Ferry' Station.

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Tennessee Valley Authority, Matta Bar Station-6.

Arkansas Power and Light. ANO & 2 7.

Arizona Public Service Co., Palo Verde Station' 8.

Cleveland Electric Illumb: sting Co., Perry Nuclear-Station I

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