ML20095K797
| ML20095K797 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 12/26/1995 |
| From: | Benes G COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9512290263 | |
| Download: ML20095K797 (2) | |
Text
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j December 26,1995 U.S. Nuclear Regulatory Commission Attn:' Document Control Desk
-Washington, D.C. 20555 l
SUBJECT:
Correction to Issuance of Amendments (Amendment No.106 for NPF-11 and Amendment No. 92 for NPF-18), dated September 27,1995.
LaSalle County Nuclear Power Station Units 1 and 2 NPF-11 and NPF-18; NRC Docket Nos. 50-373/374
REFERENCE:
- 1.. Letter, G. Benes to USNRC, " Application for Amendment to Facility Operating Licenses NPF-11 and NPF-18, Extension of Specific LaSalle Surveillance Intervals", dated April 11,1995.
- 2. Letter, R. Latta to D. Farrar, Issuance of Amendments (Amendment No.106 for NPF-11 and Amendment No. 92 for NPF-18), dated September 27,1995. (Extension of specified surveillance test intervals in order to accommodate a change to the schedule for the LaSalle, Unit 1, seventh refueling outage)
The Reference 1 letter transmitted the original application for amendment, pursuant to 10 CFR 50.90, to propose Technical Specification changes for extension of specified surveillance test intervals in order to accommodate a change to the schedule for the LaSalle, Unit 1, seventh refueling outage. The Reference 2 letter provided l
NRC approval of the amendment by issuance of License Conditions for LaSalle Unit 1
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and LaSalle Unit 2. The License Conditions state that: "The performance interval for
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those surveillance requirements identified in the licensee's request for surveillance interval extension dated April 11,1995, shall be extended to April 5,1996, to coincide with the Unit 1 seventh refueling outage schedule. The extended interval shall not exceed a total of 25.1 months for 18 month surveillances." Recently it had been Identified during an NRC inspection that a part of the Trip and Trip Bypass Tests for the Diesel Generators was performed between 4 to 22 days (a different test was performed for the 0,1 A, and 18 DG, respectively) earlier than previously beileved.
Therefore, the nctual due and critical dates for these tests, as stated in Reference A, and reiterated in the Safety Evaluation Report included with Reference B, are incorrect. However, the total extended Interval of 25.1 months that is stated in the Reference B License Conditions, still bounds the actual corrected interval extensions.
That is, even when the additional respective time adjustment (4 to 22 days depending on the DG) due to the NRC inspection identified error is added to the appropriate j
surveillance interval extensions, the surveillance intervals will still be less than 25.1 months.
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g, USNRC December 26,1995 The Safety Evaluation Report included in the Reference B document should be revised to correct this error. Specifically, item 15 (pg. 7) in section 3.0, Evaluation should be revised as follows:
15.
Trip and Trip Bypass Tests for Diesel Generators 0,1 A, and 1B and Division 3 Trip Test with Diesel Generator 18 Operating in a Test Mode. Diesel generator O is due October 6,1995, and critical February 20,1996; diesel generator 1 A is due September 5,1995, and critical January 20,1995; and diesel generator 1B is due September 9,1995 and critical January 24,1995. (The remainder of the item is correct)
These corrections do not change the original Significant Hazards Consideration Evaluation stated in Reference 1.
To the best of my knowledge and belief, the statements contained above are true and correct, in some respect these statements are not based on my personal knowledge, but obtained information furnished by other Commonwealth Edison employees, contractor employees, and consultants. Such information has been reviewed in accordance with company practice, and I believe it to be reliable.
Please direct any questions you may have concerning this matter to this office.
Sincerely, GBay Gary G. Benes Nuclear Licensing Administrator Subscribed and Sworn to before me on this J6(L day of
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H. J. Miller, Regional Administrator - Rlli P. G. Brochman, Senior Resident inspector - LaSalle M. D. Lynch, Project Manager - NRR Office of Nuclear Facility Safety - IDNS l
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