ML20127J571

Submits Status Rept from NRC Incident Investigation Team at Facility.Meeting W/Licensee Held on 850618 to Review Sequence of Events & Clarify & Resolve Differences

ML20127J571
Person / Time
Site:	Davis Besse
Issue date:	06/18/1985
From:	Heltemes C NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
To:	Dircks W NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
References
NUDOCS 8506260695
Download: ML20127J571 (2)

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8 i NUCLEAR REGULATORY COMMISSION h WASHINGTON, D. C. 20555

%....) 50 ~ 3 yg June 18, 1985 NOTE T0: William J. Dircks E' Executive Director for Operations FROM: C. J. Heltemes, Jr., Director Office for Analysis and Evaluation of Operational Data

SUBJECT:

STAT S REPORT FROM THE NRC INCIDENT If(VESTIGATION TEAM AT DAVIS BESSE At approximately 1:00pm today, June 18, E. Rossi reported iSe following progress:

1. A meeting with the licensee is scheduled for this afternoon to review the sequence of events and to clarify and resolve any differences. The team's sequence is believed to be more detailed than the licensee's.

After all differences have been resolved,'the team's sequence of events will be forwarded to headquarters (should be available on Wednesday morning, June 19).

2. The team interviewed the Shift Technical Advisor on duty during the event.

At Davis Besse, the STAS are on duty for 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> shifts and at the time of the event (1:30am), he was in a room nearby. He arrived in the control room 5 to 10 minutes after feedwater was lost. Apparently, he was not deeply involved in recovery from the event.

3. The licensee, together with the equipment vendor have completed some work

• on the two AFW valves that failed during the event. The team will interview the vendor's representative. Preliminary indications are that a bypass switch on the torque switch may have been misadjusted.

The licensee is proceeding with inspection of other equipment. The next 4.

- compon'ents to be worked on will be the main feedwater pump controls. This work will involve the vendor (GE), but the extent of the vendor involve-ment is not completely clear at this time.

8506260695 850618 PDR ADOCK 05000346 S PDR

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.- -i William J. Dircks 5 .' A conference call will be arranged on Wednesday, June ~19, at 3:30pm to discuss the status of the. team's activities.

(signed)

C. J. Heltemes, Jr. , Director Office for Analysis and Evaluation of Operational Data cc: H. Denton J. Taylor J. Keppler E. Rossi t

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