ML17174A791

Forwards Request for Addl Info Re Generic Ltr 89-10, Suppl 3, Consideration of Results of NRC-Sponsored Tests of Motor-Operated Valves

ML17174A791
Person / Time
Site:	Dresden, Quad Cities, LaSalle
Issue date:	07/02/1991
From:	Olshan L Office of Nuclear Reactor Regulation
To:	Kovach T COMMONWEALTH EDISON CO.
References
GL-89-10, TAC-77772, TAC-77773, TAC-77781, TAC-77782, TAC-77794, TAC-77795, NUDOCS 9107180281
Download: ML17174A791 (8)

Text

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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 Ddcket Nos. 50-237, 50-249 50-254,. 50-265.

and 50-373, 50-374 Mr. Thomas J. Kovach July 2, 1991 Nuclear Licensing Manager Commonwealth Edison Company-Suite 300 OPUS West III 1400 OPUS Place Downers Grove, Illinois 60515

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION RE:

GENERIC LETTER (GL) 89-10, SUPPLEMENT 3:

11 CONS IDERATION OF THE RE SUL TS OF NRC-SPONSORED TESTS OF MOTOR-OPERATED VALVES 11 (TAC NOS. 77772, 7777?, 77794, 77795, 77781, AND 77782)

By letter dated March 11, 1991, you submitted a response to th~ 120~day, 10 CFR 50.54(f), reporting requirements of GL 89-10, Supplement 3, for Dresden, Quad Cities, and LaSalle. After reviewing your response, the staff has concluded that the additional information identified in the enclosure is necessary to make a safe!y determination regarding the subject motor-operated valves.

Response to the enclosed Request for Additional Information. (RAI) is requE:sted within 30 days from receipt of this letter.

This request is covered by Office of Management and Budget Clearance Number 3150-0011, which expired June 30, 1991. A clearance extension for Part 50 is under review by OMB and is expected to be granted.

The estimated average burden hours are 80 person-hours per licensee response, including searching data sources, gathering and analyzing the data, performing data evaluations, and preparing the required letters. (These estimated average burden hours pertain only to the identified response-related matters and do not include the time for actual implementation of the requested action.) Send comments regarding this burden estimate or any other aspect of this collection of information, inclµ~ing suggestions for reducing this burden, to the Information and'Records Management Branch, Division of Information Management, U.S. Nuclear Regulatory Commission, Washington D.C., 20555, and to the Paperwork Reduction Project (3150-0011), Office of Management and Budget, Washington D.C. 20503.

Mr. Thomas July 2, 1991 Should you have any questions regarding this RAI, please contact me at (301) 492-3018.

Enclosure:

Request for Additional Information cc.w/enclosure:

See next page DISTRIBUTION Docket File Pl-37 NRC & Local PDRs PDIII-2 r/f B. Boger J. Zwolinski C. Moore L.. Olshan

.*B. Siegel OGC 15B18 E. Jordan, MNBB 3701 ACRS (10), P-315 Plant File W. Shafer, RIII J. Norberg, 7D2 T. Scarbrough, 7E23 A. Gody, Jr., 13E21 P. Eapen, RI F. Jape, RII OFFICIAL RECORD COPY M. Huber, RIII T. Stetka, RIV C. Clark, RV Sincerely, Original Signed By:

Leonard N. Olshan, Project Manager Project Directorate III-2 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation Document Name:

KOVACH 77772/73/94/95/81/82 j.'

. i Mr. Thomas J. Kovach Commonwealth Edison Company cc:

Michael I. Miller, Esq.

Sidley and Austin One First National Plaza Chicago, Illinois 60690 Mr. J. Eenigenburg Plant Superintendent Dresden Nuclear Power Stati~n Rural Route #1 Morris, Illinois 60450 U. S. Nuclear Regulatory Commission Resident Inspectors Office Dresden Station Rural Route #1 Morris, Illinois 60450 Chairman Board of Supervisors of Grundy County Grundy County Courthouse Morris, Illinois 60450 Regional Administrator Nuclear Regulatory Commission, Region III 799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 Robert Neumann Office of Public Counsel State of Illinois Center 100 W. Rando lP..~,, ""*..

Suite 11-300 Chicago, Illinois 60601 Dresden Nuclear Power Station Unit Nos. 2 and 3

'i Mr. Thomas J. Kovach Commonwealth Edison Company cc:

Mr. Stephen E. Shelton Vice President Iowa-Illinois Gas and Electric Company P. 0. Box 4350 Dav~nport, Iowa 52808

• Michael I. Miller, Esq.

Sidley and Austin One First National Plaza Chicago, Illinois 60690 Mr. Richard Bax Station Manager Quad Cities Nuclear Power Station 22710 206th Avenue North Cordova, Illinois 61242 Resident Inspector U. S. Nuclear Regulatory Commission 22712 206th Avenue North Cordova, Illinois 61242 Chairman Rock Island County Board of Supervisors 1504 3rd Avenue Rock Island County Office Bldg.

Rock Island, Illinois 61201 I 11 inoi s Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Dri~e Springfield, Illinois 62704 Regional Administrator, Region III U. S. Nuclear Regul~tory Commission 799 Roosevelt *Rc>"a<r~- Bldg. #4 Glen Ellyn, Illinois 60137 Robert Neumann Office of Public Counsel State of Illinois Center 100 W. Randolph Suite 11-300 Chicago, Illinoi~ 60601 Quad Cities Nuclear Power Station Unit Nos. 1 and 2

Mr. Thomas J. Kovach Commonwealth Edison Company cc:

Phillip P. Steptoe, Esquir~

Sidley and Austin One First National Plaza

-Chicago, lllinois 60603 Assistant Attorney General 100 West Randolph Street Suite 12 Chicago, Illinois 60601 Resident Inspector/LaSalle, NPS U.S. Nuclear Regulatory Commission Rural Route No. 1 P. 0. Box 224 Marseilles, Illinois _61341 Chairman LaSalle County Board of Supervisors LaSalle County Courthouse.

Ottawa, Illinois 61350 Attorney General 500 South 2nd Street Springfield, Illinois 62701 Chairman Illinois Commerce Commission Leland Building 527 East. Capitol Avenue Springfield, Illinois 62706

.Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 Regional Adminj~,tr.a.tor, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 Robert Neumann Office of Public Counsel State of Illinois Center 100 W. Randolph Suite 11-300 Chicago, Illinois 60601 LaSalle County Station Unit Nos. 1 and 2 Robert Cushing Chief, Public Utilities Division Illinois Attorney General's Office 100 West Randolph Street Chicago, Illinois 60601 Michael I. Miller, Esq.

Sidley and Austin One First National Plaza Chicago, Illinois 60690

REQUEST FOR ADDITIONAL INFORMATION RE: SUPPLEMENT 3 TO GENERIC LETTER 89-10, "CONSIDERATION*OF THE RESULTS OF NRC-SPONSORED TESTS OF MOTOR-OPERATED VALVES" DRESDEN UNITS 2 AND 3

1.

Identify any modifications (e.q., torque switch settinq.

adjustments, qearinq.chanqes, or motor/actuator replacement) for each MOV within the scope of Supplement 3 to GL 89-10 since June 1990 or planned for the future.

2.

Provide current torque switch settinqs, torque switch bypass, differential pressure, information necessary to confirm motor adequacy, and whether particular valves are flex wedge, split wedge, or parallel disk gate design for each MOV within the scope of Supplement 3.

3.

In that you consider the Anchor Darling flex wedge and split wedge gate valves to be unpredictable, how do you plan to size the motor operator and set the torque switches for those valves?

4.

In Information Notice 90-72 (November 28, 1990), "Testing of Parallel Disc Gate Valves in Europe," the NRC staff indicates that foreign utilities are using a valve factor of 0.4 for a new German design of parallel disk gate valve.

How do you plan to confirm the. sizing of the motor operator and its torque switch settings for the parallel disk design in your valves?

5.

How have you addressed the rate of loading phenomenon in MOV sizing and torque switch settings?

REQUEST FOR ADDITIONAL INFORMATION RE: SUPPLEMENT 3 TO GENERIC LETTER 89-10, "CONSIDERATION OF THE RESULTS OF NRC-SPONSORED TESTS OF MOTOR-OPERATED VALVES" QUAD CITIES UNITS l AND 2

1.

Identify any modifications (e.g., torque switch setting adjustments, gearing changes, or motor/actuator replacement) for each MOV within the scope of Supplement 3 to GL 89-10 since June 1990 or planned for the future.

2.

Provide current torque switch settings, torque switch bypass, differential pressure, and information necessary to confirm motor adequacy for each MOV within the scope of Supplement 3.

3.

In Information Notice 90-72 (November 28-, 1990), "Testing of*

Parallel Disc Gate Valves in Europe," the NRC staff indicates that foreign utilities are usinq a valve factor of 0.4 for a new German design of parallel disk gate valve.

How do you plan to confirm the sizing of the motor operator and its torque switch settings for the ~arallel disk design in your valves?

4.

How have you addressed.the rate of loading phenomenon in MOV sizing and torque switch settings?

..... *~*.: ::.-.:.*..

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REQUEST FO~ ADDITIONAL INFORMATION RE: SUPPLEMENT 3 TO GENERIC LETTER 89-10, "CONSIDERATION OF THE RESULTS OF NRC-SPONSORED TESTS OF MOTOR-OPERATED VALVES" LASALLE UNITS. 1 AND 2

1.

Identify any modifications (e~g., torque switch setting adjustments, gearing changes, or motor/actuator replacement) for each MOV within the.scope of Supplement 3 to GL 89-1o*since June 1990 or planned for the future.

2.

Provide current torque switch settings, torque switch bypass, differential pressure, information necessary to confirm motor adequacy, and whether particular valves are flex wedge, split wedge, or parallel disk gate design for each MOV within the scope qf Supplement 3.

3.

In that you consider the Anchor Darling flex wedge and split*

wedge gate valves to be unpredictable, how do yo~ plan to size the motor operator and set the torque switches for any of those valves at LaSalle?

4~

In Information Notice 90-72 (November 28, 1990), "Testing of Parallel Disc Gate Valves in Europe," th~ NRC staff indicates that foreign utilities are using a valve factor of 0.4 for a new German design of parallel disk gate valve.-

How do you plan to confirm the sizing of the motor operator and its torque switch settings for the parallel disk design in your valves?

5.

How have you addressed the rate of loading phenomenon in.MOV

• sizing and torque switch settings?