ML17304B169

Part 21 Rept Re Ruskin Div Supplied Dampers W/Itt Actuators. Div Currently Evaluating Loctite Compound Which May Be Applied,Following Verification of Proper Damper Adjustment, to Threads of Extension Shaft in Place

ML17304B169
Person / Time
Site:	Palo Verde
Issue date:	02/02/1989
From:	Hill T PHILLIPS INDUSTRIES, INC.
To:	NRC
References
REF-PT21-89, REF-PT21-89-071-000 PT21-89-071-000, PT21-89-71, NUDOCS 8905180154
Download: ML17304B169 (10)

Text

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BUTION DEMONS A,Tl0.'i SYSTEM REGULAT INFORMATION DISTRIBUTIO STEM (RIDS)

SUBJECT:

Part 21 rept re dampers supplied by ITT actuators.Ruskin Div evaluating Loctite compound following verification.

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TITIE: Part 21 Rept (50 DKT) 8 05000528 05000529 05000530 NOTES:Standardized plant..

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ACCESSION NBR:8905180154 DOC.DATE: 89/02/02 NOTARIZED:

NO DOCKET FACIL:STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH.NAME AUTHOR AFFILIATION HILL,T.D.

Phillips Industries, Inc.

RECIP.NAME RECIPIENT AFFILIATION NRC No Detailed AffiliationGiven RECIPIENT ID CODE/NAME PD5 LA CHAN,T DAVIS,M.J.

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I Air Distribution Group Ruskin Division Manufacturing Quality Components for Better Building February 2,

1989 Director, Office of Inspection and Enforcement U.S.

Nuclear Regulatory Commission Washington, D.C.

10555

Dear Sir:

In accordance with the requirements of Manufacturing

Company, located at 3900

Missouri, 64030, is herewith reporting deficiency with equipment furnished by for Nuclear Power Plant application.

10 CFR part 21, Ruskin Dr. Greaves

Road, Grandview.

that we have discovered a

Ruskin Manufacturing Company On December 19,

1988, Ruskin Division received letter notification from Arizona Nuclear Power Project (ANPP) requesting Ruskin input for completion of Reportabi lity Evaluation Request 88-18.

The identified problem on Ruskin supplied dampers with ITT actuators was the rotation of extension shaft into or out of the damper yoke assembly which results in misadjustment of the damper blade stop position.

The reason for rotation was identified as no securing mechanism (ie. set screw) between the extension shaft and the yoke.

This problem was originally identified

Dampers, which were supplied only to t with ITT actuators.

Resolution of the

ANPP, wi th Ruskin, by applying Locti te attached the yoke to the extension sha fix and found it to be acceptable with qualifications.

as affecting Bubbletight he Palo Verde jobsite, equipped problem was accomplished by 277 to the threads which ft.

ANPP has evaluated 'this no impact on original damper L

cono i tions ex i stea for other Induc 1 ear 5

dampers with ITT actuators utilizing s

design, without locking mechanism.

I I es wner husk 1 n na arne extension shaft s

s~po i

and yoke On February 2,

1989, sufficient information was available which reasonably indicated a deficiency may exist.

The deficiency dis-covered indicated that the extension shaft may rotate, causing damper misadjustment which may cause actuator to overstroke or understroke, which may cause insufficient blade closure resulting in excessive leakage.

In some cases this misadjustment could result in potential failure of linkage attachments and operability of linkage system.

8905180154 8~0~02 = r5 PDR ADOCN, 05000528 8

PNU P.Q. Box 129

~ Grandview, Mo 64030

~ 816/761-7476

~ FAX: 816/765 8955

l

Director, Office of "I'nspection and Enfor cement U.S.'uclear Regulatory Commission Page 2

Ruskin Division is currently evaluating a Loctite compound which may be applied, following verification of proper damper adjustment, to the threads of the extension shaft in place.

Loctite 277 used at Palo Verde is also being evaluated for use at other jobsites, however, this compound requires disassembly and reassembly of the yoke extension shaft.

Attachment I to this letter identifies the affected jobsites by location and the number of units supplied for each.

Upon completion of evaluations referenced

above, results will be immediately transmitted to your office and all affected jobsites.

1I In closing, please. find enclosed a copy of the letter describing the s i tuati on contained in thi s 1 etter, whi ch vri 1 1

be sent to each affected site.

If further questions should arise, please contact us at once.

Thank you for your cooperation.

Sincerely, RUSKIN t1ANUFACTURING DIVISION Thomas D. Hill President Enclosures Attachment I

Notification Form Letter Note:

For further discussions, questions or concerns on this

matter, please contact:

Richard J.

Yarges Vice President, (juality 1-816-761-7476 RY/r lm

ATTACHMENT"I Shearon Harris Nuclear Plant Carolina Power E Light Co.

P.O.

Box 101 New Hill, NC 27562 36 operators Attn:

L.I. Lof1 in

Manager, Engineering Palo Verde Nuclear Gen. Plant Arizona Nuclear Power Project P.O.

Box 52034

Phoenix, AZ 85072-2034 42 operators Attn:

E.C. Sterling Engineering Manager Oconee Nuclear Plant Duke Power Co.

P.O.

Box 33189 Quality Assurance Dept.

Charlotte, NC 28242 9 operators Attn:

Q.A. Manager, Vendors Div.

Catawba Nuclear Plant Duke Power Co.

See Above 57 operators Attn:

Q.A. Manager, Vendors Div.

Enrico Fermi Nuclear Plant Detroit Edison Co.

Fe. mi 2

6400 N. Dixie Highway

Newport, MI 48166 40 operators Attn:

Gregory Brooks Materials Manager, Warehouse Bldg.

105 TAC

r

MK,IIFS INGRPRIES INC.

Air Distribution Group Ruskin Division Manufacturing Quality Components for Better Building Attention:

Subject:

Oamo

. s with ITT Actuators It has recently come to our attention that dampe.

s supplied to you with ITT Actuators

may, in some instances, become out of adjus..".ent due to the extension shaft from the actuator rotating in the yok This misadjustment could result in excessive leakage or possible failure of linkage attachments and operability of linkage syste:-..

We have supplied safety related dampers with a total of ITT operator linkage systems.

We are evaluating potential fixes which would allow in place correction.

Ruskin Oivision has notified the Nuclear Regulatory Commission of this situation in accordance with the requirements of 10 CFR oar:

21.

We will be contacting you with further information and making arrange-ments to rework the dampers as soon as possible.

Sincerely, RL'Si;!;l:tAtt"."-.-," "R I ilG O I '/ I S I 0'l P.O. Box 129

~ Grandview, Mo 64030

~ 816/761-7476

~ FAX: 816/765.8955

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