ML20069A136
| ML20069A136 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 05/13/1994 |
| From: | Schnell D UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ULNRC-3020, NUDOCS 9405240277 | |
| Download: ML20069A136 (2) | |
Text
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i,..L I901 Chouteau Avmin Post Omce Box 149
' St inuit Masoon 631SS
-e 314 554 2650 Untou nev 13, Etuc11uc 2">'.get",,.
s 1994 uc M U.S.
Nuclear Regulatory Commission o.TTN: Document Control Desk Mail Station P1-137 Washington, D.C.
20555 ULNRC-3020.
Gentlemen:
DOCKET NUMBER 50-483 CALLAWAY PLANT REVISION TO TECHNICAL SPECIFICATIONS 3.8.3.1 AND 3.8.3.2 ELECTRICAL POWER SYSTEMS - QNSITE POWER DISTRIBUTION
Reference:
ULNRC-2873 dated October 6, 1993 l'
L The referenced letter transmitted an application for amendment to Facility Operating License No. NPF-30 for Callaway Plant.
This request changes the limiting.
conditions for operations (LCO) for four emergency busses supplying power to the Essential Service Water System to be consistent with the LCOs for that system.
Based on recent discussions with the Staff, the following information is provided to describe how Technical Specification actions and allowed outage times (AOT) are applied to electrical busses covered by Technical Specifications.
When a bus is de-energized, a combination of main control board alarms, plant procedures, operator training, Technical Specification interpretations, and the plant administrative mainframe computer allow the operators to determine the loads powered from that bus.
The corresponding Technical Specification LCOs are then identified in accordance with Technical Specification definition of OPERABLE-OPERABILITY (TS 1.19).
The AOTs for the bus and the loads are tracked with the most restrictive AOT governing the plant actions as prescribed by the Technical Specifications.
If there are further questions on this matter, please contact us.
Very truly yours, i
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Schnell l
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\\0 9405240277 940513 l
PDR -ADOCK 05000483
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A.
Baxter, Esq.
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Shaw, Pittman, Potts & Trowbridge 2300 N.
Street, N.W.
Washington, D.C.
20037 M. H.
Fletcher CFA, Inc.
18225-A Flower Hill Way Gaithersburg, MD 20879-5334 L. Robert Greger Chief, Reactor Project Branch 1 U.S.
Nuclear Regulatory Commission Region III 801 Warrenville Road Lisle, IL 60532-4351 Bruce Bartlett Callaway Resident Office U.S.
Regulatory Commission RR#1 Steedman, MO 65077 L. R. Wharton (2)
Office of Nuclear Reactor Regulation U.S.
Nuclear Regulatory Commission 1 White Flint, North, Mail Stop 13E21 11555 Rockville Pike Rockville, MD 20852 Manager, Electric Department Missouri Public Service Commission P.O.
Box 360 Jefferson City, MO 65102 Ron Kucera Department of Natural Resources P.O.
Box 176 Jefferson City, MO 65102