ML20057E593

Responds to 930628 GL 89-10,suppl 5, Inaccuracy of MOV Diagnostic Equipment

ML20057E593
Person / Time
Site:	Beaver Valley
Issue date:	09/29/1993
From:	George Thomas DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-89-10, NUDOCS 9310120333
Download: ML20057E593 (4)

Text

'

}'

• Beaver Valley Power Station Shipp ngport. F A 15M 7-0004 4 12) 393-5206 gi23 s43-ama r Ax  ;

ceonat s TsouAs September 29, 1993  !

Devmori Vice Presioent Nuclear Sary r es Nuclear Power Divmon U. S. Nuclear Regulatory Commission Attn: Document Control Deck i Washington, DC 20555

Subject:

Beaver Valley Power Station, Unit No. 1 and No. 2 BV-1 Docket No. 50-334, License No. DPR-66 BV-2 Docket No. 50-412, License No. NPF-73 Response to Generic Letter 89-10, Supplement 5

References:

1. Generic Letter 89-10, Supplement 5, " Inaccuracy of  ;

Motor-Operated Valve Diagnostic Equipment," June 28, 1993.

2. MOV Users Group (MUG), " Final Report MUG Validation Testing as Performed at Idaho National Engineering Laboratories" (Volume 1), February 3, 1992.

3. " Motor-Operated Valve Inspection At Beaver Valley Power Station Unit 1 and Unit 2 (NRC Combined Inspection Report No. 50-334, 0-412/92-80)," June 10, 1992 ,

In response to Generic Let'.er 89-10, Supplement 5 (Reference 1), ,

Duquesne Light Company (DLC) is submitting information for the diagnostic equipment used at the Beaver Valley Power Station (BVPS),

Unit 1 and Unit 2. ,

(1) Within 90 days of receipt of this letter, all licensees are ,

required to notify the NRC staff of the diagnostic equipment used to confirm the proper size, or to establish settings, for MOVs within the scope of GL 89-10.

Response:  ;

The following is a list of diagnostic equipment used to confirm tise proper size, or to establish settings, for the motor-operated valves (MOVs) within the scope of Generic Letter 89-10. Please i note that the VOTES equipment will be initially used for a trial period during the BVPS Unit 2 Fourth Refueling Outage, which is '

in progress.

• ITI MOVATS, Inc., Series 3000 Teledyne, Inc., Quick Stem Sensor 1 Liberty Technologies, Inc., VOTES 120055 or g*

g I 9310120333 930929 E' ,

PDR ADOCK 05000334 f P PDR .

l Res'ponse to Generic Letter 89-10, Supplement 5 Page 2 (2) Within 90 days of receipt of this letter, licensees are required to report whether they have taken actions or plan to take actions I (including schedule and summary of actions taken or planned) to address the information on the accuracy of MOV diagnostic equipment.

Response

DLC has reexamined the MOV program for BVPS Unit 1 and Unit 2 to account for uncertainties in properly setting valve operating thrust caused by inaccuracies in MOV diagnostic equipment. The results of this reexamination are summarized below.

ITI MOVATS diagnostic equipment inaccuracies were reported by the MOV Users Group (MUG) in Reference 2. Procedural corrections which account for these inaccuracies were incorporated in the BVPS Corrective Maintenance Procedure I (CMP), " Testing of Motor-Operated Valves Using MOVATS,"

Issue 4, Revision 3, April 22, 1992. The NRC reviewed this CMP during the team inspection conducted on April 20-24, 1992, and provided their concerns in Reference 3. The CMP was revised and reissued on November 2, 1992, to address the concerns.

The inaccuracies associated with applying data from MOVATS test equipment to the operation of valves in both the open .

and closed directions were addressed in ITI MOVATS I Engineering Report 5.2, March 13, 1992. Evaluations to address the ITI MOVATS Engineering Report 5.2 were performed j according to the Nuclear Management and Resources Council, ,

" Industry Guidance in Responding to Motor-Operated Valve -

Diagnostic Validation Testing," dated May 1992. Working to an advanced copy of the guidance, the evaluations and  ;

implementation of corrective actions were completed May 4, 1992, for the BVPS Unit 2 and July 17, 1992, for the 7VPS [

Unit 1.

ITI MOVATS Special Test Report -

6.0, " Actuator l Repositioning Effects Test Report," dated August 6, 1993, was recently received by DLC. This information was reviewed and corrections for these additional inaccuracies are being incorporated into the appropriate procedures. Related concerns were identified in NRC Information Notice 93-54:  ;

" Motor-Operated Valve Actuator Thrust Variations Measured  !

with a Torque Thrust Cell and a Strain Gage." The  ;

evaluations to address the actuator repositioning effects )

will be completed by November 17, 1993 for BVPS Unit 2 and by December 31, 1993 for Unit 1.

VOTES will be used on a limited basis during the current  !

BVPS Unit 2 Fourth Refueling Outage. The VOTES equipment includes software with corrections for equipment inaccuracies and will be operated by test personnel provided  :

by Liberty Technologies, Inc.  !

i, w

- " - , - -i w-  %- "

Response to Generic Letter 89-10, Supplement 5 Page 3 m

Should you have any questions regarding this submittal,'please contact Ed Coholich at (412) 393-5224.

Sincerely, W

George S. Thomas wy cc: Mr. L. W. Rossbach, Sr. Resident Inspector Mr. T. T. Martin, NRC Region I Administrator Mr. G. E. Edison, Project Manager 4

4 r.- .- - -

- , - - -.,-,w

AFFIDAVIT COMMOINEALTH OF PENNSYLVANIA)

) SS:

COUNTY OF BEAVER ) ,

Subject:

Beaver Valley Power Station, Unit No. 1 and No. 2 BV-1 Docket No. 50-334, License No. DPR-66 BV-2 Docket No. 50-412, License No. NPF-73 '

Response to Generic Letter 89-10, Supplement 5 Before me, the undersigned notary public, in and for the' County and Commonwealth aforesaid, this day personally appeared George S.

Thomas, to me known, who being duly sworn according to law, deposes and says that he is Division Vice President, Nuclear Services of the Nuclear Power Division, Duquesne Light Company, he is cily authorized to execute and file the foregoing submittal on behalf of said Company, and the statements set forth in the submittal are true and i

correct to the best of his knowledge, information and belief.

.t i

~ $f (Note 6 Geo/ge S. Thomas l

SubscriDed and sworn to before me on this,72 day of, f db/C k/  !

/- .q

- f r ,. in L!!l'/ [

Notary Public c-

/t2f nll( '

!/

~

PKff.S SC 3I T,axy A. Eicek itJXVPEC 9gnport Baro, EWm Cost /

fay C w m 2,on E gr M Aa; 10. Pf 7 pew,Pgyeyr,an:a AKaran D1Idrn

!