ML20094B192
| ML20094B192 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 08/01/1984 |
| From: | Schnell D UNION ELECTRIC CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20094B197 | List: |
| References | |
| ULNRC-889, NUDOCS 8408060286 | |
| Download: ML20094B192 (4) | |
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UNION ELECTRIC COM PANY 1908 GRATIOT STREET ST. Louis, MISSOURI August 1, 1984
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Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation l
U. S. Nuclear Regulatory Commission Washington,-D.C. 20555 ULNRC-889
Dear Mr. Denton:
DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 REVISION TO TECHNICAL SPECIFICATION TABLE 3.3-1 Union Electric Company herewith transmits three (3) original and forty (40) conformed copies of an application for Amendment to Facility Operating License No. NPF-25 for the Callaway Plant, Unit 1.
This change modifies Technical Specification Table 3.3-1 by revising one action statement (Action 4) and adding an additional action i
statement (Action 12)' for the source range neutron flux monitors during shutdown conditions (Item 6.b).
The source range monitors provide in part, protection for a boron dilution accident during Modes 2, 3, 4 and
-5.
These monitors initiate, upon doubling of neutron flux within 10 minutes, a switchover of the suction for the charging pumps from the Volume Control Tank (VCT) to the Refueling Water Storage Tank (RWST).
The additional action stateinent specifies appropriate compensatory actions, when two channels are out of service, to maintain the plant in a-safe condition. The revised action statement provides for a limited time, a block of both flux doubling channels in order to perform a reactor startup.
Based on our schedule for Callaway initial criticality of mid-to-laterAugust and the fact that criticality is not achievable without this change, we are requesting an expedited review.
This situation occurred through an oversight because the Callaway Plant is the first to receive an operating license with the Westinghouse Boron Dilution MiH gation System. During development of the Callaway Technical Specifications, greater consideration was given to assuring that the system fulfilled its intended safety function (i.e., boron dilution accident mitigation) than was given to possible operational limitations (i.e., limiting reactor startup). Recent surveillances of
.the system have identified that the technical specifications do not allow both channels to be blocked as designed to permit a planned reactor startup, m
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l Mr. Harold R.'Denton 2
August 1, 1984 The revised technical specification pages, Safety Evaluation, Significant Hazards Consideration, and Environmental Asessment are provided as Attachments 1, 2, 3 and 4 to this letter. Also enclosed is g
!a check for $150.00 as required by 10 CFR 170.21.
We are available to discuss this with you at any time.
1 Very truly yours, t
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Donald F. Schnell s
WRR/dra Attachments cc: Distribution attached s
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STATE OF MISSOURI )
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_ CITY OF ST. LOUIS )
Donald F. Schnell, of lawful age, being first duly sworn upon
. oath'says that he is Vice President - Nuclear for Union Electric l Company; that he has read the foregoing document.and knows the content
.thereof; that he has executed the same for and on the behalf of said company with' full power and authority to do so; and that the facts
'therein stated are true and correct to the best of his knowledge, information and belief.
By
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Donald F.'Schnell Vice President - Nuclear SUBSCRIBED and sworn to before me this l day of Owe
, 1984 her) $
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b cc ULNRC-889 Gerald Charnoft, Esq.
Shaw, Pittman, Potts & Trowbridge 1800 M. Street, N.W.
Washington, D.C.
20036 Nicholas A. Petrick Executive Director SNUPPS 5 Choke Cherry Road Rockville, Maryland 20850
-John H. Neisler Callaway Resident Office U.S. Nuclear Regulatory Commission RRf1 Steedman, Missouri. 65077 William Forney Division of Projects and Resident Programs, Chief, Section 1A U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 ch Bruce Little Sallaway Resident Office
'd.S. Nuclear Regulatory Commission RRi1 Steedman, Missouri 65077 Joseph J. Holonich, Project Manager Office of Nuclear Reactor Regulation U.S. Nuclear Eigulatory Commission Mail Stop P-316 Washington, D.C.
20555 Ron Kucera, Deputy Director Department of Natural Resources P.O. Box 176 Jefferson City, Missouri 65012 l