ML20235Q135

Confirmatory Action Ltr RIII-87-18 Confirming 870908 Telcon Re Listed Util Actions to Be Taken in Response to Events Surrounding 870906-07 Reactor Trip & Subsequent Equipment Malfunctions

ML20235Q135
Person / Time
Site:	Davis Besse
Issue date:	09/09/1987
From:	Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	Shelton D TOLEDO EDISON CO.
Shared Package
ML20235Q101	List: ML20235Q098 ML20235Q117 ML20235Q135 ML20235Q153
References
CAL-RIII-87-18, NUDOCS 8710070504
Download: ML20235Q135 (2)

Text

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UNITED STATES 4 gh R80p \ -

NUCLEAR REGULATOnY COMMisslON '

[. 'S RE010N hl 57 4

f 199 ROOSEVELT ROAD 4 GLEN ELLYN. (LLINol5 60137

,,,,,# SEP OB G87 Docket No. 50-346 Toledo Edison Company ATTN: Mr. Donald Shelton .

.Vice President  !

Nuclear- '

Edison Plaza- ,

300 Madison Avenue Toledo, OH 43652 Gentlemen:

}

This letter confirms the telephone conversation on September 8,1987 between-Mr. E. G. Greenman and others of this office and Mr L. Storz of your staff regarding the events surrounding the reactor trip and subsequent equipment malfunctions at the Davis Besse facility on September 6 and 7,1987.- With regard to the matters discussed, we understand that you will:

1. Determine the cause of the reactor trip.

2. Determine the cause of each equipment malfunction which occurred i

coincident with or subsequent to the September 6,1987 trip, including an l assessment of historical reliability.

3. Take those actions necessary to ensure that complete documentary evidence of the "as found" condition of equipment which malfunctioned is maintained.  !

4. Not disassemble the failed main steam safety valve without the prior concurrence of the Augmented Investigation Team (AIT) Leader, N. J. Chrissotimos, or W. G. Guldemond of my staff.

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5. Except as dictated by plant safety, advise the NRC AIT Leader prior to conducting any troubleshooting activities. Such notification should be provided soon enough to allow time for the team leader to assign an inspector to observe activities.

6. Review operator and shift personnel actions following the event to determine if those actions were in accordance with your procedures and policies.

7. Evaluate the adequacy of the normal, abnormal, and emergency procedures used during the event and subsequent plant stabilization.

8. Evaluate the timeliness and completeness of the information reported to the NRC pursuant to 10 CFR 50.72 regarding this event.

9. Submit to NRC Region 111 a formal report of your findings and conclusions within 30 days of receipt of this letter.

8710070504 8710C'. CONFIRMATORY ACT10N LETTER PDR ADOCK 0500( .A6 O FDR ,

_ - ~ - _. , ~ .

Mr._ Donald Shelton. 2 SEP 0 01907 We also understand that Davis Besse will not be made critical without the concurrence of the Region III Regional Administrator or his designee.

Please let us know innediately if your understandintj' differs from that set out above.

Sincerely.

F q A. Bert Davis Regional Administrator L. Storz, Plant Manager DCS/RSB(RIDS)

Licensing Fee Management Branch Resident Inspector, RIII Harold W. Kohn, Ohio EPA James W. Harris, State of Ohio Robert M. Quillin, Ohio Department of Health

_ State of Ohio, Public Utilities Consnission R. Cooper, EDO W.. Fanning. AE0D l F. Miraglia, NRR ]

G. Holahan, NRR i M. Virgilio, NRR ]j J. Partlow, NRR P. Byron, SRI  !

J. Strasma, RIII .J e

I L j CONFIRMATORY ACTION LETTER

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