ML20106F518

Submits Supplemental Info Re 840801 Tech Spec Change Request to Modify Table 3.3-1 Concerning Block Switches During Startup,Per 841025 Telcon.No Plant Changes Involved in Implementing Tech Spec Change

ML20106F518
Person / Time
Site:	Callaway
Issue date:	10/26/1984
From:	Schnell D UNION ELECTRIC CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
ULNRC-958, NUDOCS 8410300283
Download: ML20106F518 (3)

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1901 Grotiot Street St Louis Donald F. Schnelt

• * *

• October 26, 1984 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, DC 20555

Dear Mr. Denton:

ULNRC-958 DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 REVISION TO TECHNICAL SPECIFICATION TABLE 3.3-1

Reference:

ULNRC-889 dated August 1, 1984 The referenced letter transmitted a technical specification change request which modifies Table 3.3-1 to allow the boron dilution flux doubling signal to be blocked during reactor startup. As a result of a phone call between NRC (J. Holonich and V. Leung) and UE (W. Robinson and D. Shafer) on October 25, 1984 the following supplemental information is provided:

Block switches are provided on the main control board to allow blocking the isolation valve movement during normal reactor startup. This blocking function blocks only the isolation valve movement and has no effect on the other protective functions of the source range instrumentation, i.e., reactor trip, alarms, indication. Boron dilution protection is automatically reinstated when both intermediate range channels decrease below the P-6 setpoint valve. Blocking is annunciated on the main control board.

No physical plant changes are involved in implementing this technical specification change.

Please contact us if there are additional questions.

Very truly yours, fo , .)u. W

.pA Donal ' chnell WRR/DS/msc cc: J. J. Holonich Oh P

A Ohh3 pn l 6 Moeling Address' RO Box 149 St Louis MO 63166

STATE OF MISSOURI )

) SS CITY OF ST. LOUIS )

Robert J. Schukai, of lawful age, being first duly sworn upon oath says that he is General Manager-Engineering (Nuclear) for Union Electric Company; that he has read the foregoing document and knows the content thereof; that he has executed the same for and on 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

• Role t J. hukai Gener ager-Engineering Nuclear SUBSCRIBED and sworn to before me this 076 day of d34.4/ , 198 BARGARA J. PFAF NOTARY PUBLIC, STATE OF MISSOURI NY COMMISSION EXPIRES APRIL 22, IS;)

' AL LOul8 COUNTY.

.. e 1 cc Gerald Charnoff, 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 RRil

- Steedman, Missouri 65077 William Forney Division of Projects and Resident Programs, Chief, Section lA U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Bruce Little Callaway Resident Office U.S. Nuclear Regulatory Commission RRtl Steedman, Missouri 65077 Joseph J. Holonich, Project Manager Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop P-316 Washington, DC 20555 Ron Kucera, Deputy Director Department of Natural Resources P. O. Box 176 Jefferson City, Missouri 65102