ML17187A385
| ML17187A385 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Byron, Braidwood, Quad Cities, Zion, LaSalle  |
| Issue date: | 04/02/1996 |
| From: | Shiraki C NRC (Affiliation Not Assigned) |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| References | |
| GL-95-07, GL-95-7, TAC-M93434, TAC-M93435, TAC-M93441, TAC-M93442, TAC-M93458, TAC-M93459, TAC-M93477, TAC-M93478, TAC-M93509, TAC-M93510, TAC-M93541, TAC-M93542, NUDOCS 9604040224 | |
| Download: ML17187A385 (5) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555--0001 Mr. D. L. Farrar Manager, Nuclear Regulatory Services Co11111onwealth Edison Company Executive Towers West III 1400 Opus Place, Suite 500 Downers Grove, IL 60515 April 2, 1996
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR GENERIC LETTER 95-07,
- PRESSURE LOCKING AND THERMAL BINDING OF SAFETY-RELATED POWER-OPERATED GATE VALVES, 11 RELATED TO BRAIDWOOD STATION, UNITS 1 AND 2; BYRON STATION, UNITS 1 AND 2; ZION STATION, UNITS 1 AND 2; QUAD CITIES STATION, UNITS 1 AND 2; DRESDEN STATION, UNITS 2 AND 3, AND LASALLE COUNTY STATION, UNITS 1 AND 2 (TAC NOS. M93434, M93435, M93441, M93442, M93458, M93459, M93477, M93478, M93509, M93510, M93541 AND M93542)
Dear Mr. Farrar:
On August 17, 1995, the staff issued Generic Letter (GL) 95-07, "Pressure Locking and Thermal Binding of Safety-Related Power-Operated Gate Valves,"
to request that licensees take actions to ensure that safety-related power-operated gate valves that are susceptible to pressure locking or thermal binding are capable of performing their safety function within the current licensing bases of the facility.
By letter dated February 13, 1996, Convnonwealth Edison Company (ComEd), submitted its 180-day response to GL 95-07 for each of its facilities. Although the staff has not completed its review, it determined that ComEd has developed a methodology to predict the thrust requirement for gate valve actuators to overcome pressure locked conditions and, based on its preliminary understanding, believe it to be a valuable tool. The staff also understands that ComEd has performed testing to validate this methodology and that it is relying on it to justify the design basis capability of certain safety-related power-operated gate valves to perform their safety function within the current licensing bases of the ComEd facilities.
As discussed during a phone call on March 8, 1996, the staff has determined that it requires additional information to complete its review of the program that ComEd developed to address the concerns discussed in GL 95-07.
Therefore, submission is requested of the following additional information:
(1) the thrust prediction methodology (including the method for predicting actuator output capability), (2) the test procedures (including information specific to each test valve sufficient to perform the pressure locking calculations), (3) the test results (including the method for interpreting diagnostic equipment data), (4) the information regarding the diagnostic equipment used during testing {including calibration methods and diagnostic
__ _ _ _ _ _. _f')_,1.11 a :1 -e.
9604-040224* 960402 PDR ADOCK 05000237 P
--~--*,
OFFICE NAME DATE D. April 2, 1996 uncertainties), and (5) any limitations or conditions placed on the use of the methodology (i.e., valve size, type, temperature, pressure, etc.)
The Office of Nuclear Regulatory Research is sponsoring tests at the Idaho National Engineering Laboratory to study the effects of pressure locking and thermal binding on selected gate valves.
When these test results are made publicly available, the information will be shared with interested licensees.
Upon completing a more thorough review of the ComEd submittal, the staff may request additional information and may also desire to meet with the cognizant members of the ComEd staff regarding its GL 95-07 program.
Sincerely, Original signed by:
Clyde Y. Shiraki, Senior Project Manager Project Directorate III-2
- Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation Docket Nos. STN 50-456, STN 50-457, STN 50-454, STN 50-455, 50-295, 50-304, 50-237, 50-254, 50-265, 50-249, 50-373, 50-374 cc: See next page.
DISTRIBUTION:
Docket File PDIII-2 r/f CShiraki CMoore OGC, 015-BlB LMiller, RIII HRathbun GDick JStang PUBLIC JRoe (JWR)
BCl ayton, RI II RCapra ACRS, T2-E26 P. Hiland, RIII RAssa RPul sifer DSkay document, indicate in the box: "C" = Copy.without enclosures "E" = Copy with enclosures "N" = No copy 04/2.. /96 OFFICIAL RECORD
D. L. Farrar cc:
Michael I. Miller, Esquire Sidley and Austin One First National Plaza Chicago, Illinois 60603 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 Document Control Desk-Licensing Commonwealth Edison Company 1400 Opus Place, Suite 400 Downers Grove, Illinois 60515 Mr. William P. Poirier; Director Westinghouse Electric Corporation Energy Systems Business Unit Post Office Box 355, Bay 236 West Pittsburgh, Pennsylvania 15230 Joseph Gallo Gallo & Ross 1250 Eye St., N.W.
Suite 302 Washington, DC 20005 Howard A. Learner Environmental law and Policy Center of the Midwest 203 North LaSalle Street Suite 1390 Chicago, Illinois 60601 U.S. Nuclear Regulatory Commission Byron Resident Inspectors Office 4448 North German Church Road Byron, Illinois 61010-9750 Ms. Lorraine Creek Rt. l, Box 182 Manteno, Illinois 60950 Commonwealth Edison Company Chairman, Ogle County Board Post Office Box 357
- Oregon, Illinois 61061 Mrs. Phillip B. Johnson 1907 Stratford Lane Rockford, Illinois 61107 George L. Edgar Morgan, Lewis and Bochius 1800 M Street, N.W.
Washington, DC 20036 Attorney General 500 South Second Street Springfield, Illinois 62701 EIS Review Coordinator U.S. Environmental Protection Agency 77 W. Jackson Blvd.
Chicago, Illinois 60604-3590 Commonwealth Edison Company Byron Station Manager 4450 North German Church Road Byron, Illinois 61010 Kenneth Graesser, Site Vice President Byron Station Commonwealth Edison Station 4450 N. German Church Road Byron, Illinois 61010 U.S. Nuclear Regulatory Commission Braidwood Resident Inspectors Office Rural Route #1, Box 79 Braceville, Illinois 60407 Mr. Ron Stephens Illinois Emergency Services and Disaster Agency 110 East Adams Street Springfield, 'Illinois 62706 Chairman Will County Board of Supervisors Will County Board Courthouse Joliet, Illinois 60434
Commonwealth Edison Company Braidwood Station Manager Rt. 1, Box 84 Braceville, Illinois 60407 Ms. Bridget Little Rorem Appleseed Coordinator 117 North L fnden Street Essex, Illinois 60935 Site Vice President Dresden Nuclear Power Station 6500 North Dresden Road Morris, Illinois 60450-9765 Station Manager Dresden Nuclear Power Station 6500 North Dresden Road Morris, Illinois 60450-9765 U.S. Nuclear Regulatory Commission Resident Inspectors Office Dresden Station 6500 North Dresden Road Morris, Illinois 60450-9766 Richard J. Singer Manager ~ Nuclear MidAmerican Energy Company 907 Walnut Street P.O. Box 657 Des Moines, Iowa 50303
~rent E. Gale, Esq.
Vice President - Law and MidAmerican Energy Company Regulatory Affairs One RiverCenter Place 106 East Secon*d Street P.O. Box 4350 Davenport, Iowa 52808 Chairman Rock Island County Board of Supervisors 1504 3rd Avenue Rock Island County Office Bldg.
Rock Island, Illinois 61201 Chairman Grundy County Board Administration Building 1320 Union Street Morris, Illinois 60450 Mr. L. William Pearce Station Manager Quad Cities Nuclear Power Station 22710 206th Avenue North Cordova, Illinois 61242 U.S. Nuclear Regulatory Commission Quad Cities Resident Inspectors Office 22712 206th Avenue North Cordova, Illinois 61242 Phillip P. Steptoe, Esquire Sidley and Austin One First National Plaza Chicago, Illinois 60603 Assistant Attorney General 100 West Randolph Street Suite 12 Chicago, Illinois 60601 U.S. Nuclear Regulatory Commission Resident Inspectors Office LaSalle Statior 2605 N. 21st Road Marseilles, Illinois 61341-9756 Chairman LaSalle County Board of Supervisors LaSalle County Courthouse Ottawa, Illinois 61350 Chairman Illinois Commerce Commission Leland Building 527 East Capitol Avenue Springfield,_ Illinois 62706 LaSalle Station Manager LaSalle County Station Rural Route I P.O. Box 220 Marseilles, Illinois 61341
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Robert Cushing Chief, Public Utilities Division Illinois Attorney General's Office 100 West Randolph Street Chicago, Illinois 60601 Dr. Cecil Lue-Hing Director of Research and Development Metr.apolitan Sanitary District of Greater Chicago 100 East Erie Street Chicago, Illinois 60611 Mayor of Zion Zion, Illinois 60099 U.S. :Nuclear Regulatory Commission Ziorn Resident Inspectors Office 105 Shn oh Blvd.
Zion, Illinois 60099 Station Manager Zion Nuclear Power Station 101 Shiloh Blvd.
Zion, Illinois 60099-2797