ML19256C961

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PNO-79-167:allegations Made That Steam Generator Supports May Not Be Adequate to Withstand Dynamic Loading.Underdesign by Factor of Five to Ten Alleged Anonymously
ML19256C961
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 06/15/1979
From: Klinger G
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PNO-79-167, NUDOCS 7910150791
Download: ML19256C961 (1)


Text

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PRELIMINARY NCTIFICATI_0N June 15. 1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-79-167 This preliminary notification constitutes EARLY notice of an event of POSSIBLE safety or public interest significance.

The information presented is as initially received without verification or evaluation a_nd is basically all that is known by IE staff on this date.

Facility:

Toledo Edison Company, Davis-Basse 1 (DN 50-346) Oak Harbor, OH

Subject:

ALLEGATION REGARDING STEAM GENERATOR SUPPORTS Region III has learned from the Office of Nuclear Regulatory Research that a knowledgeable individual believes the steam generator supports at Davis-Besse Unit 1 may not be adequate to withstand dynamic loading.

The individual, who insists en remaining anonymous, believes the supports may be underdesigned by a factor of 5 to 10.

The Region is investigating the matter.

At the present time, Region III does not plan to make a press release.

The State of Ohio is being notified.

Region III received notification of the allegation on June 14, 1979.

C_ontact:

G. Klingler, IE x28019; F. Nolan, IE x28019; S. Bryan, IE x28019 W

3-Distribution:

Transmitted H St 3.3C '

Chairman Hendrie Commissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Commissioner Ahearne C. C. Kammerer, CA Commissioner Gilinsky ACRS (For Distribution) sG Transmitted: MNBRG P. Bldq 2;fD V. Stello, IE L. V. Gossick, ED0 H.

P,.

Denton, NRR Region.m u!C I' H. L. Ornstein, EDO R. C. DeYoung, NRR J. J. Fouchard, PA R. J. !!attson. NRR-N. M. Haller, MPA R. S. Boyd, N,RR yg (MAIL)

R. G. Ryan, OSP SS Bldg S.J s W ~

J. Cummings, 0IA H. K. Shapar, ELD W. J. Dircks, NMSS R. Minogue, SD S. Levine, RES

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PRELIMINARY NOTIFICATION 1447 360 7910150 0

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