ML20197E175

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PNO-OSP-88-009:on 880606,Unit 2 Scrammed from 98% Power. Caused by Steam/Feed Flow Mismatch Combined W/Low Steam Generator Level.Tva Conducting post-trip Review of Scram
ML20197E175
Person / Time
Site: Sequoyah Tennessee Valley Authority icon.png
Issue date: 06/06/1988
From: Goodwin E
NRC OFFICE OF SPECIAL PROJECTS
To:
References
PNO-OSP-88-009, PNO-OSP-88-9, NUDOCS 8806080109
Download: ML20197E175 (1)


Text

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. June 6, 1988 I PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PN0-0SP-88-009 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is all that is known by the OSP staff on this date.

FACILITY: Tennessee Valley Authority Licensee Emergency Sequoyah Unit 2 Classificatio~ .

Docket No. 50-328 Notification of Unusual Soddy-Daisy, Tennessee Event Alert Site Area Emergency General Emergency X Not Applicable

SUBJECT:

SEQUOYAH UNIT 2 SCRAM At 2:15 p.m. on June 6,1988, Sequoyah Unit 2 scramed from 98% power. Based on preliminary information, the scram was initbted by steam / feed flow mismatch combined with low steam generator level. Sequoyah was conducting a feedwater systems surveillance test at the time and this may have been a contributing factor. TVA is conducting a post-trip review of the scram and will discuss the results with OSP prior to restart.

CONTACT: E. Goodwin (301) 492-0794 DISTRIBUTION .

5520: Mail:

MaTrman Zech - 1NRC1718/Leadop XEI Coenissioner Roberts - INRC1718/Leadop DCS Comissioner Bernthal - INRC1718/Leadop OIA-MNBB-8607 Comissioner Carr - 1NRC1718/Leadop 01 - 3E4-DLewis Comissioner Rogers - INRC1718/Leadop OSP SECY - INRC1718/Leadop CA - 1NRC1718/Leadop PA - 1NRC02/Leadop ARM - NRCRM/ Brown Regional Offices A0ED - NRCRMPN Region I - RI/Leadop Hqs Oper. Office - NRCRMPN Region 11 - RII/Leadop NRR - INRC1112/Berean Sequoyah Resident Inspector OE - INRC0708/ Summers Licensee: TVA NMSS - INRC0506/Leadop Region III - RIII/Leadop OGC - INRC1516/Leadop Region IV - RIV/Leadop SP - 1NRC0304/SGindes Region V - PV/Leadop EDO - INRC1718/Leadop DEDR0 - INRC1718/Leadop GPA - 1NRC1718/Leadop

, f 0 t 8806080109 880606 PDR I&E PNO-OSP-88-OO9 DCD

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