ML20236U392

PN-75-059:licensee Reported That Four Movement Areas in Three Different Locations at Byron Construction Site Have Just Been Discovered.Licensee Requesting Illinois State Geological Survey to Assist in Evaluating Movements

ML20236U392
Person / Time
Site:	Byron
Issue date:	07/30/1975
From:	Jennifer Davis, Thornburg H, Warnick R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PN-75-059, PN-75-59, NUDOCS 9807300107
Download: ML20236U392 (1)

Text

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PRELIMINARY NOTIFICATION - NOT FOR PUBLIC DISCLOSURE July 30, 1975 im

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PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE --PN-75-59 This preliminary notification constitutes EARLY notice of events of

--* POSSIBLE safety or public interest significance. The information I

presented is as initially received without verification or evaluation and ic basically all that is known by OIE staff as of 2:00 p.m. on the date of this notification. IT SHOULD BE SPECIFICALLY NOTED THAT THIS NOTIFICATION MAY CONTAIN INFORMATION THAT LATER MAY BE DETERMINED TO BE INACCURATE OR INCONSISTENT. AN OFFICE OF INSPECTION AND ENFORCEMENT NOTIFICATION OF AN INCIDENT OR OCCURRENCE (BLUE SHEET) SUBSEQUENTLY

-WILL BE ISSUED IF WARRANTED.

' Facility: ' Byron Units 1 and 2, Commonwealth Edison Company

Subject:

DISCOVERY OF POSSIBLE FAULT AREA AT THE BYRON CONSTRUCTION SITE The licensee reported that four movement areas in three different -

locations at the Byron construction site have just been discovered. -

The apparent movements are reported to be small and do not indicate recent movement. The licensee is requesting the Illinois State Geological Survey to assist in evaluating the movements as committed in the Byron PSAR. WWE No publicity on this matter is expected.

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" Region III received notification of this occurrence by telephone from Robert Bolger, Commonwealth Edison' Company at 11:15 a.m., July 30, 1975.

Contact:

RFWarnick, IE x7353 HDThornburg, IE x7353, JGDavis, IE x7541 O

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Distribution:

r Chairman Anders Commissioner Mason S. J. Chilk, SECY Commissioner Gilinsky Com:iissioner Rowden G. F. Murphy, JCAE Commissioner Kennedy C. C. Kammerer, CA g

L. V. Gossick, EDO B. C. Rusche, NRR D. F. Knuth, IE J. A. Harris, PA

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-k H. H. Brown, ISP T. J. McTiernan, AIA l K. R. Chapman, NMSS H. K. Shapar, ELD Transmitted: P Bldg 3  ; H St 3 h ; MNBB 3 ;LugepricM e / /

9007300107 750730 PDR I&E j 2 PN-75-059 PDR PRELIMINARY NOTIFICATION - NOT FOR PUBLIC DISCLOSURE L_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - --