PNO-IV-85-031, updating Licensee Initiated Action to Correct Feedwater Control Problem.Inspectors Reviewed Revised Procedures,Operator Training & Hardware & Control Changes Implemented.Corrective Action Satisfactory

PNO-IV-85-031:updating Licensee Initiated Action to Correct Feedwater Control Problem.Inspectors Reviewed Revised Procedures,Operator Training & Hardware & Control Changes Implemented.Corrective Action Satisfactory

ML20129K093
Person / Time
Site:	Wolf Creek
Issue date:	07/15/1985
From:	Johnson E, Martin L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
References
PNO-IV-85-031, PNO-IV-85-31, NUDOCS 8507230377
Download: ML20129K093 (2)

'

s July 15, 1985

. I d i U, PRELIMINARY NOTIFICATION OF EVENT OR UtiUSUAL OCCURRENCE -- Pfl0-IV-85-31 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 basically all that is known by NRC staff on this date.

FACILITY: Kansas Gas & Electric Company Licensee Emergency Classification:

Wolf Creek Generating Station Notification of Unusual Event Burlington, Kansas Alert Docket No.: 50-482 Site Area Emergency

_ _ General Emergency "T Not Applicable

SUBJECT:

UPDATE TO PN OF JULY 11, 1985 - FEE 0 WATER C0fiTROL PROBLEMS Region IV personnel assisted by the Region III Senior Resident Inspector at Callaway (D. Little), were on site Friday, July 12, 1985, to followup on licensee initiated action to correct the feedwater control problem.

The f4RC inspectors reviewed the licensee evaluation of causal factors of the turbine trips and reactor trips caused by steam generator icvel oscillations while transferring from the main feedwater bypass valves to the main feedwater reg, valves.

The NRC inspectors reviewed the licensco's revised procedures, operator training, the simulator's ability to simulate plant characteristics for this evolution, and hardware and control changes implemented to improve the stability of the steam generator level during this transfer.

The NRC inspectors found the licensee's corrective action to be satisfactory.

On July 13, 1985, the plant was restarted. The project section chief and the Wolf Creek senior resident inspector observed portions of this startup including the feedwater transfer. The startua was successful and the steam generator level was much more stable than it 1ad been on previous startups.

The plant is now at 50% power awaiting the stabilization of Xenon prior to continuing the test program.

This information is current as of 10:00 a.m. CUT July 15, 1985.

No press release is planned.

The state of Kansas has been informed.

CONTACT: L. E. Martin, FTS 728-8153 E. H. Johnson, FTS 728-8141 RIV:DRSP h r RP0enise/lk -- ; i n

/ /85 /85 r

0507230377 00071D ',

PDR I&E PNO-IV-US-031 PDH $'

i el

r July 15, 1985 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-IV-85-31 DISTRIBUTION:

H. ST. MNBB Phillips E/W W111ste MAIL:

Chmn Palladino ED0 NRR IE kMSS 00T: Trans Onl Com. Zech PA DCS OIA RES DMB (Original)y Com. Roberts MPA AE00 Com. Asselstine ELD VIB INP0 Com. Bernthal NSAC SECY Air Rights ACRS SP CA PDR Regions: Licensee:

(ReactorLicensees)