ML20083B397

Discusses Seven Ref Documents Re Action Required of Licensees W/W CR Sys.Correspondence Completes Util Response to GL 93-04

ML20083B397
Person / Time
Site:	Callaway
Issue date:	05/03/1995
From:	Schnell D UNION ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-93-04, GL-93-4, TAC-M86837, ULNRC-3208, NUDOCS 9505120024
Download: ML20083B397 (3)

Text

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1901 C%outeau Avenue

. , , ' , j/ Post Ot!c.e Box 149 St Louis. Missoun 63166 314-554-2650 -

y Donald F. SchneII Sen or Vice President 3, 1995

.g May U.S. Nuclear Regulatory Commission  :

Attn: Document Control Desk Mail Station P1-137 Washington, D.C. 20555 ULNRC-3208 TAC NO. M86837 '

Gentlemen:

DOCKET NUMBER 50-483 CALLAWAY PLANT ROD CONTROL SYSTEK FAILURE AND WITHDRAWAL OF ROD CLUSTER CONTROL ASSEMBLIES. 10 C7R 50.54 (F)

References:

1. NRC Generic Letter 93-04 dated June 21, 1993

2. ULNRC-2832 dated August 5, 1993

3. ULNRC-2857 dated September 17, 1993

4. NRC Request for Additional Information Letter dated December 15, 1994

5. ULNRC-3131 dated January 19, 1995

6. ULNRC-3164 dated March 14, 1995

7. NRC Acceptance Letter dated April 20, 1995 Pursuant to the requirements of 10 CFR 50.54 (f) ,

the NRC issued Reference 1 to all licensees with the Westinghouse Rod Control System (except Haddam Neck) for action and to all other licensees for information.

References 2 and 3 provided Union Electric's 45-day and 90-day responses, respectively, as required by Reference 1.

In Reference 4, the NRC noted their approval, by letter dated November 10, 1994 to the Westinghouse Owners Group (WOG), of the following documents: (1) WCAP-13864, Rev. 1, " Rod Control System Evaluation Program", (2)

Westinghouse Technical Bulletin NSD-TB-94-05-RO, " Rod Control - CRDM Timing Change", and (3) "WOG Recommended Rod Control System Surveillance Test." . Reference 4 also requested a commitment to implement the current order timing modification and the new current order survei31ance test, as described in the approved WOG documents above, prior to startup from the next refueling outage.

References 5 and 6 provided Union Electric's responses to the Reference 4' RAI letter.

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In response to the notification requirements of I Reference 7, the current order timing modification-has been implemented.. Slave cycler logic traces as.well as  ;

current traces for all 53 rods were taken and found to be -

acceptable. l Surveillance tests described in References 5 and 6 will be performed during every future refueling outage.

This completes Union Electric's response to Generic Letter 93-04.  !

Very truly yours, cc m Donald F. Schnell GGY/sid 4 1

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cc: T. A. Baxter, Esq.

Shaw, Pittman, Potts & Trowbridge 2300 N. Street, N.W.

Washington, D.C. 20037 M. H. Fletcher 1 Professional Nuclear Consulting, Inc. l 19041 Raines Dr Derwood, MD 20855-2432 M. J. Farber Chief, Reactor ProjectsSection III A 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 20852-2738 Manager, Electric Department Missouri Public Service Commission P.O. Box 360 Jefferson City, MO 65102 L

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