ML20011E794

Requests Emergency Relief from Tech Spec 3.1.3.1.b Due to Electrical Problem W/Rod Control Sys.Action Required to Prevent Plant Shutdown from 100% Power When Adverse Weather Conditions Exist in Svc Area

ML20011E794
Person / Time
Site:	Callaway
Issue date:	02/02/1990
From:	Passwater A UNION ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ULNRC-2149, NUDOCS 9002220491
Download: ML20011E794 (3)

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{ 'q 1$I Cht2J!t'bv h't'!n.It' y*C.* h:st Dtkr Em 16 St iows. Mmour. LPS5 g 311 cn 3m og ' l Qvg Nbruary 2,1990 b,IC U, fi . Nuclear Regulatiory Commission 83 ATTN: Document Control Desk-Mail Station P1-137 Washington, D.C.. 20555- ULNRC-2149 Gentlemon DOCKET NUMBER 50-483 CALLAWAy PLANT TEMPORARY WAIVER OF COMPLIANCE-TECHNICAL' SPECIFICATION 3/4.1.3 Referencos: 'l) ULNRC-2055 dated 8/2/89

2) ULNRC-2129 dated 12/28/89 In accordance with 10CFR50.91 Union Electric requests emergency technical specification relief. At approximately 2:05 p.m. CST on February 2, 1990 cellaway entered Technical Specification Action Statement 3.1.3.1.b as a result of an urgent failure alarm received during routino control rod motion testing. It has been determined that the alarm was-indicative of an electrical problem in the rod contral system and that the control rods.romain trippable.

Union Electric has requested in the reference letter a technical specification change that would provido an

-allowed outage timeaof 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> for this condition, i.e.,

the rods are trippabic and that a control rod urgent failures alarm or other electrical problem exists. We therefore request an allowed outage time of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to resolve the problem prior to completing the actions required by Technical Specification 3.1.3.1.b. The evaluation justifying this request is contained in the safety evaluation of Reference 1.

This emergency action is required to prevent a plant shutdown from 100% power at a time when adver ac weather conditions exist in the UE service area.

Ve trul- yours, j W.d I

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A. C. Passwater i

9002P20491 900202

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cci Gerald Charnoff, Esq.

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

Washington, D.C. 20037 Fk,in.

4 Professional Drive (Suite 110)

L Gaithersburg, MD 20879 r

R. C. Knop Chief, Reactor Project Branch 1 U.S. Nuclear Regulatory Commission

! Region III 799 Roosevelt Road Glen F,llyn, Illinois 60137 Bruce Little

,Callaway Resident Office

'U.S. Nuclear Regulatory Commission RRW1 Steedmam, Missouri 65077 S. V. Athavale (2)

Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission r 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 E

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