U-601298, Ro:On 881026,Tech Spec 3.0.3 Entered Due to Declaring Control Room Ventilation Train a Inoperable.Caused by Faulty Flow Transmitter.Reactor Power Was Reduced & Calibr on Train a Flow Transmitter Performed

Ro:On 881026,Tech Spec 3.0.3 Entered Due to Declaring Control Room Ventilation Train a Inoperable.Caused by Faulty Flow Transmitter.Reactor Power Was Reduced & Calibr on Train a Flow Transmitter Performed

ML20205M773
Person / Time
Site:	Clinton
Issue date:	10/27/1988
From:	Holtzscher D ILLINOIS POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
U-601298, NUDOCS 8811030280
Download: ML20205M773 (2)

Text

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.. og U-601298 R100-88(10-27)-G 1N.150 ILLIN0/8 POWER COA 1PANY CtrNTCN PCw(R ST ATION. P.o. 801 674. CliNTON. ittiNois 61727 October 27, 1988 U.S. Nuclear Regulatory Commissien Document Control Desk Washington, D.C. 20555

Subject:

Clinton Power Station Nop fication of Unusual Event Dear Sir Please find attached a summary report of the "Notification of Unusual Event" which occurred at Clinton Power Station on October 26, 1988. Thio summary report is submitted pursuant to Appendix 1 of NUREC 0654 (Revision 1) and Clinton Power Station Emergency Plan Implementing Procedure AP-03.

If you have any questions cencerning this summary report, please contact me at (217) 935-8881, extension 3408 Sincerely yours, 9.7./

D. L. Holt scher Acting Man 1ger Licensing and Safety VLY/krm Attachment ce: Regional Administrator, Region III, USNRC W. Snell, Chief Emergency Preparedness Section KRC Clinton Licensing Project Manager NRC Resident Office Illinois Department of Nuclear Safety g

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Clinton Power Station *

'otification of Unusual Event i

on Wednesday, October 26, 1988, at 0650 hours0.00752 days <br />0.181 hours <br />0.00107 weeks <br />2.47325e-4 months <br />, a Notification of Unusual Event (NOUE) was dec1kred in accordance with Emergency Plan Implementing ,

Procedure EC-02 Emergency Classification. This procedure requires that I an NOUE be declared if a loss of any Engineered Safety Feature (EST)  ;

occurs requiring plant shutdown due to CPS Technical Specifications. l Clinton Power Station was operating at approximately 93% power in hode 1.

l On Wednesday, October 26, 1988, at 0410, Technical Specification 3.0.3 ,

was entered due to declaring Control Room Ventilation (VC) train A  !

inoperabie. Train A was declared inoperable due to a faulty flow i transmitter. Train B was declared inoperable on 10/22/88 due to the  !

minimum outside air damper being failed in the closed position. l l

At 0650 the NC' ' was declared. The State of Illinois was notified at  !

0652; the NRC 'sucident Response Center was notified at 0706; and the NRC l Resident Inspector was notified at 0650.

The plant responded by reducing reactor power and performing calibration t on train A flow transmitter. Reactor power reached approximately 48%.  !

Following partial performance of surveillance 9070.01 for post maintenance testing Train A was declared operable. ,

The Shif t Supervisor terminated the NOUE at 1043. The State of 111 fools ,

was notified of the termination at 1049; the NRC Incident Response r Center was notified at 1050; and the NRC Resident Inspector was notified  ;

at 1043. f I

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