ML17179A986
| ML17179A986 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Byron, Braidwood, Quad Cities, Zion, LaSalle  |
| Issue date: | 05/28/1993 |
| From: | Shiraki C Office of Nuclear Reactor Regulation |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| References | |
| GL-92-08, GL-92-8, TAC-M83846, TAC-M83847, TAC-M83853, TAC-M83854, TAC-M83870, TAC-M83871, TAC-M83888, TAC-M83889, TAC-M83919, TAC-M83920, TAC-M85626, TAC-M85627, NUDOCS 9307130239 | |
| Download: ML17179A986 (6) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20556-0001 Docket Nos. STN 50-456, STN 50-457, STN 50-454, STN 50-455, 50-237, 50-249, 50-373 50-374, 50-254, 50-265, and 50-295, 50-304 Mr. D. L. Farrar Manager, Nuclear Regulatory Services Commonwealth Edison Company Executive Towers West III, Suite 500 1400 OPUS Place Downers Grove, Illinois 60515
Dear Mr. Farrar:
May 28, 1993
SUBJECT:
COMMONWEALTH EDISON COMPANY RESPONSE TO NRC GENERIC LETTER 92-08, "THERMO-LAG 330-1 FIRE BARRIERS (TAC NOS. M83846, M83847, M83853, M83854, M83870, M83871, M83888, M83889, M83919, M83920, M85626 AND M85627)
In a letter dated April 16, 1993, Commonwealth Edison Company (CECo) responded to NRC Generic Letter (GL) 92-08, "Thermo-Lag 330-1 Fire Barriers." With regard to Quad Cities and Dresden, the staff's position is that although there is no Thermo-Lag installed at those sites, CECo is still responsible for reviewing the content of the GL and for considering actions to ensure that similar problems do not exist with the fire protection systems they utilize.
Questions 1, 2, and 3 below apply to the Braidwood, Byron, LaSalle, and Zion sites. Question 4 applies to these same sites with the exception of LaSalle.
In its review of the CECo reply, the staff identified several areas of the reporting requirements in which further clarification or information is needed.
These are identified below.
- 1.
The CECo response to 2.(a) indicates that tests were not performed to qualify Thermo-Lag used at th*e stations.
What qualification test(s) did CECo rely on to qualify its fire barrier system?
- 2.
The response to 2.(b)(l) does not indicate if the~e fire barrier assemblies were installed under a Quality Assurance or Quality Control program.
How did CECo confirm that the barrier systems were installed per the qualification test assembly configurations?
Did CECo utilize site specific installati9n guidance or was the guidance generic and vendor supplied?
~.
Mr. D. 3.
In the response to 2.(b)(l), CECo indicated that some potential deviations from tested configurations have been identified.
In.the response to 2.(b)(2), CECo indicated that these potential deviations from tested configurations have not been evaluated.
Is the CECo schedule for completing the analysis of deviations from the barrier test configurations consistent with its schedule to correct the fire barrier deficiencies?
- 4.
In the response to 2.(c)(2) for Byron, Braidwood, and Zion, CECo indicated that its derating factors are consistent with the 33%
identified in Information Notice 92-46.
How much derating margin still remains by plant design?
Are the tested configurations consistent in design and construction with the "as-built" plant configurations?
A response to these additional questions is requested within 60 days of receipt of this letter.
Although Thermo-Lag barriers were evaluated and may have been considered qualified, the results of recent tests and inspections indicate that further actions are now necessary to.address fire endurance and ampacity derati~g of Thermo-Lag barriers.
Your response states that appropriate actions to resolve these concerns are being developed through an industry program coordinated by NUMARC and you would apply the results of the industry program, when completed, to the Thermo-Lag 330-1 installations at Zion, Byron, Braidwdod, and LaSalle County stations. Compensatory measures for inoperable barriers are in place and will remain in place until the fire barriers can be declared operable.
Your response to GL 92-08, however, did not provide a schedule by which corrective actions would be completed.
In your response to GL 92-08 you indicated that the actions necessary to restore (or confirm) the operability of these barriers will be based on the results of the NUMARC program.
The staff expects that licensees referencing the NUMARC program will review the results and, within 30 days after the completion of the program, inform the NRC of the corrective actions necessary and the schedule for restoring the operability of these fire barriers.
For those plant specific o~ unique fi.re barrier configurations that are not bound by the NUMARC program, please provide within 30 days after receipt of this letter, your schedules for site specific fire endurance testing of these unique configurations and the implementation of any potential barrier upgrades resulting from this testing.
In accordance with the reporting requirements of GL 92-08, you are also to confirm in writing, completion of the corrective actions.
OFC NAME DATE OFC NAME DATE Mr. D. The information requested by this letter is within the scope of the overall burden estimate in Generic Letter 92-08 which was an average of 300 person-hours for each addressee's response.
This request is covered by Office of Management and Budget Clearance Number 3150-0011, which expires June 30, 1994.
DISTRIBUTION:
C.
B~rlinger NRC & Local PDRs PDIIl-2 r/f (6)
J. Roe J. Zwolinski J. Dyer C. Moore (6)
C. Shiraki R. Assa J. Hickman J. Stang R. Stransky C. Patel OGC ACRS (10)
Docket Files (STN 50-456, STN 50-457, STN 50-454, STN 50-455, 50-237, 50-249, 50-373, 50-374, 50-254, 50-265, 50-295 and 50-304)
A. Masciantonio B. Clayton Riii Sincerely, Original Signed By:
Clyde -Y. Shiraki, Senior Project Manager Project Directorate 111-2 Division of Reactor Projects - 111/IV/V Office of Nuclear Reactor Regulation previous page for oncurrence concurrence
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- Mr. D. L. Farrar cc:
Mr. William P. Poirier Westinghouse Electric Corporation Energy Systems Business Unit Post Office Box 355, Bay 236 West Pittsburgh, Pennsylvania 15230 Joseph Gallo, Esquire Hopkins and Sutter 888 16th Street, N.W., Suite 700 Washington, D.C.
20006
- Regional Administrator U. S. NRC, Region III 799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 Ms. Bridget Little Rorem Appleseed Coordinator 117 North Linden Street Essex, Illinois 60935 Mr. Edward R. Crass Nuclear Safeguards and Licensing Division Sargent & Lundy Engineers 55 East Monroe Street Chicago, Illinois 60603 U. S. Nuclear Regulatory Commission Resident Inspectors Office Rural Route #1, Box 79 Braceville, Illinois 60407 Mr. Ron Stephens, Director Illinois Emergency Services and Disaster Agency 110 East Adams Street Springfield, Illinois 62706 Robert Neumann Office of Public Counsel State of Illinois Center 100 W. Randolph, Suite )l-300 Chicago, Illinois 60601 EIS Review Coordinator Environmental Protection Agency Region V 230 S. Dearborn. Street Chicago, Illinois 60604 Attorney General 500 South 2nd Street Springfield, Illinois 62701
- CommontlRlth Edison Company U. S. Nuclear Regulatory Commission Byron Resident Inspectors Office 4448 North German Church Road Byron, Illinois 61010 Ms. Lorraine Creek Rt. l, Box 182 Manteno, Illinois 60950 Mrs. Phillip B. Johnson 1907 Stratford Lane Rockford, Illinois 61107 Douglass Cassel, Esquire 17 East Monroe Street, Suite 212 Chicago, Illinois 60603 U. S. Nuclear Regulatory Commission Resident Inspectors Office 105 Shiloh Blvd.
Zion, Illinois 60099 George L. Edgar Newman & Holtzinger, P.C.
1615 L Street, N.W.
Washington, D.C.
20036 Commonwealth Edison Company Byron Station Manager 4450 North German Church Road Byron, Illinois 61010 Illinois Dept. of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 Commonwealth Edison Company Braidwood Station Manager Rt. l, Box 84 Braceville, Illinois 60407 Chairman, Ogle County Board Post Office Box 357 Oregon, Illinois 61061 Chairman Will County Board of Supervisors Will County Board Courthouse Joliet, Illinois 60434
Michael I. Miller, Esquire Sidley and Austin One First National Plaza Chicago, Illinois 60690 Mr. C. Schroeder Plant 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 Chairman Board of Supervisors of Grundy County Grundy County Courthouse Morris, Illinois 60450 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 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 Courthou~e Ottawa, Illinois 61350 Dr. Cecil Lue-Hing Director of Research and Development Metropolitan Sanitary District of Greater Chicago 100 East Erie Street Chicago, Illinois 60611 Robert Cushing Chief, Public Utilities Division Illinois Attorney General's Office 100 West Randolph Street Chicago, Illinois 60601 Mr. G. Diederich LaSalle Station Manager LaSalle County Station Rural Route 1 P. 0. Box 220 Marseilles, Illinois 61341 Chairman Illinois Commerce Commission Leland Building 527 East Capitol Avenue Springfield, Illinois 62706 Mr. Stephen E. Shelton Vice President Iowa-Illinois Gas and Electric Company P. 0. Box 4350 Davenport, Iowa 52808.
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 Mayor of Zion Zion, Illinois 60099
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NAME DATE OFC NAME DATE Mr. D. The information requested by this letter is within the scope of the overall burden estimate in Generic Letter 92-08 which was an average of 300 person-hours for each addressee's response. This request is covered by Office of Management and Budget Clearance Number 3150-0011; which expires June 30, 1994~
DISTRIBUTION:
C. Berlinger NRC & Local PDRs PDIII-2 r/f (6)
J. Roe J. Zwolinski*
J. Dyer c~ Moore (6)
C. Shiraki R. Assa J. Hickman J. Stang R. Stransky _
Docket Files (STN 50~456,:
STN 50-457, ST~ 50-454, STN 50-455, 50-237, 50-249, 50-373, 50-374, 50-2.5,4, 50-265, 50-295 and 50-304)
A. Masciantonio:.. B.-_._cla.yt6n-RIP Sincerely, Original Signed By:
Clyde Y.
Shi~aki, Senior Project Manager Project Directorate 111-2 Division of Reactor Projects - 111/IV/V Office of N~clear Reactor Regulation.
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