ML20203N543
| ML20203N543 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 04/30/1986 |
| From: | Adensam E Office of Nuclear Reactor Regulation |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20203N544 | List: |
| References | |
| GL-84-11, NUDOCS 8605050480 | |
| Download: ML20203N543 (2) | |
Text
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April 30, 1986 DI ION:
Jocket No. 50-373 Docket No. 50-373 NRC PDR Local PDR BWD-3 r/f Mr. Dennis L. Farrar EAdensam Director of Nuclear Licensing EHylton Commonwealth Edison Company ABournia P.O. Box 767 RBernero Chicago, Illinois 60690 Attorney, OELD RGrimes
Dear Mr. Farrar:
EJordan JPartlow ACRS(10)
Subject:
Safety Evaluation of the IGSCC Inspection at la Salle County Station,linit 1 Your submittal of March 13, 1986, addresses the inspections performed on the reactor coolant system piping during the current outage for la Salle County Station, Unit 1.
A total of 126 welds were ultrasonically inspected meeting the requirements of Generic Letter 84-11.
In addition, 126 welds in the recirculation piping system had been treated with induction heating stress improvement (IHSI). Two recirculation piping welds were found to have linear indications. These two welds were evaluated assuming the indications were intergranular stress corrosion cracking (IGSCC) and were found to meet all NRC and ASME Code Criteria for continued operation for an 18-month cycle Enclosed is our Safety Evaluation of your submittal. We conclude that the IGSCC inspection performed meets the guidelines in Generic Letter 84-11 and that the plant can be safely operated at least for an additional 18-month fuel cycle.
Because of uncertainties about the longer term behavior of the piping, we request that your plans for inspection and/or modification of the reactor coolant pressure boundary piping systems during the next refueling outage be submitted for our review at least three months prior to start of the outage.
Sincerely,
/S/
Elinor G. Adensam, Director BWR Project Directorate No. 3 Division of BWR Licensing
Enclosure:
As stated cc: See next page RWD-3: DBL LA:
-3: DBL D
-3: DBL ABournia/hmc F) ton EAdensam 4/$/86 4/ l/86 4/1p/86 i
8605050480 860430 DR ADOCK 0500 3
Mr. Dennis L. Farrar la Salle County Nuclear Power Station Commonwealth Edison Company Units 1 & 2 CC*
Philip P. Steptoe, Esquire John W. McCaffrey Suite 4200 Chief, Public Utilities Division One First National Plaza 160 North La Salle Street, Room 900 Chicago, Illinois 60603 Chicago, Illinois 60601 Assistant Attorney General 188 West Randolph Street Suite 2315 Chicago, Illinois 60601 Resident Inspector /LaSalle, NPS U.S. Nuclear Regulatory Commission Rural Route No. 1 P.O. Box 224 Marseilles, Illinois 61341 Chairman La Salle County Board of Supervisors La Salle 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 Mr. Gary N. Wright, Manager Nuclear Facility Safety Illinois Department of Nuclear Safety 1035 Outer Park Drive, 5th Floor Springfield, Illinois 62704 Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Rossevelt Road Glen Ellyn, Illinois 60137 i
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