ML20044D718
| ML20044D718 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 05/14/1993 |
| From: | Robert Stransky Office of Nuclear Reactor Regulation |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| References | |
| GL-92-04, GL-92-4, TAC-M84285, TAC-M84286, NUDOCS 9305200187 | |
| Download: ML20044D718 (3) | |
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May 14, 1993 Docket Nos. 50-373 and 50-374 Mr. D. L. Farrar Manager, Nuclear Regulatory Services Commonwealth Edison Company OPUS West III, Suite 500 1400 OPUS Place Downers Grove, Illinois 60515
SUBJECT:
LASALLE COUNTY STATION, UNITS 1 AND 2 - RESPONSE TO GENERIC LETTER 92-04, " RESOLUTION OF THE ISSUES RELATED TO REACTOR VESSEL WATER LEVEL INSTRUMENTATION IN BOILING WATER REACTORS" (TAC NOS. M84285 AND M84286)
This letter acknowledges receipt of Commonwealth Edison Company's (CECO) response to NRC Generic Letter (GL) 92-04, dated September 28, 1992.
GL 92-04 was issued to all operating Boiling Water Reactor (BWR) licensees, requesting them to promptly assess the impact on their facilities of potentially erroneous level indication due to non-condensible gases, and to implement compensatory measures and long-term corrective actions as necessary.
We find acceptable:
(1)
Your review and acceptance of the BWR Owners' Group (BWROG) generic analysis as being applicable to the LaSalle County Station, Units 1 and 2.
(2)
Your endorsement of the BWROG commitment, as outlined in a letter dated August 12, 1992, regarding schedule and plans for actions to address postulated errors in BWR water level instrumentation.
(3)
Your endorsement of the BWR0G's Emergency Procedures Committee guidance letter dated August 19, 1992. This letter provides guidance for operator action in the event of level indication errors due to non-condensibh gases during reactor pressure vessel (RPV) depressurization. We also understand that you have sensitized your operators to these potential errors consistent with the BWROG guidance.
(4) Your commitment to implement the longer term BWROG finding resulting from their experimental and analytical programs on a schedule consistent with the BWROG program, as documented in their letter of August 12, 1992, and discussed at the October 29, 1992, meeting with the NRC.
On October 23, 1992, the BWROG approved refined operator guidance developed by the Emergency Procedures Committee, sent to your Operations Superintendent on October 16, 1992, for response to instrument errors due to non-condensible gases. We feel that this guidance provides appropriate information for operators to adequately identify and deal with potentially inaccurate RPV level 9305200187 9f3055N ^
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' Mr. -D. L.' Farrar May 14, 1993 instrumentation and expect that this, or equivalent guidance, has been
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incorporated into your station operations.
Your September 28, 1992, submittal did not provide a firm commitment date for the submittal of a detailed plan and schedule for the implementation of corrective actions at LaSalle, in accordance with Requested Action 3 of the GL.
I The staff requests that you provide your plan and schedule for the implementa-tion of these corrective actions no later than July 30, 1993.
The reporting and/or recordkeeping requirements contained in this letter affect j
fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
If you have any questions regarding this letter, please feel free to contact me l
at (301) 504-1346.
j Sincerely, Original signed by:
Robert J. Stransky, Project Manager Project Directorate III-2 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation cc:
See next page i
DISTRIBUTION:
Docket File (50-373 & 50-374)
NRC & Local PDRs PDIII-2 r/f l
J. Roe J. Zwolinski J. Dyer C. Moore i
B. Clayton RIII i
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Commonwealth Edison Company Unit Nos. I and 2 cc:
I Phillip P. Steptoe, Esquire Robert Cushing Sidley and Austin Chief, Public Utilities Division t
One First National Plaza Illinois Attorney General's Office Chicago, Illinois 60603 100 West Randolph Street Chicago, Illinois 60601 Assistant Attorney General 100 West Randolph Street Michael I. Miller, Esquire ~
Suite 12 Sidley and Austin Chicago, Illinois 60601 One First National Plaza Chicago, Illinois 60690 Resident Inspector /LaSalle, NPS U. S. Nuclear Regulatory Commission Mr. G. Diederich Rural Route No.1 LaSalle Station Manager P. O. Box 224 LaSalle County Station liarseilles, Illinois 61341 Rural Route 1 i
P. O. Box 220 Chairman Marseilles Illinois 61341 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 s
527 East Capitol Avenue Springfield, Illinois 62706 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 1
Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 Robert Neuman i
Office of Public Counsel State of Illinois Center 100 W. Randolph I
Suite 11-300 Chicago, Illinois 60601 t