ML20249A134

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PNO-78-006:on 780112,upper Reactor Vessel Assembly Slated for Palo Verde Unit 2 Experienced Controlled Drop During Handling Operations at Combustion Engineering.Event Occurred When Brake for Crane,Slipped,Allowing Assembly to Drop
ML20249A134
Person / Time
Site: Palo Verde Arizona Public Service icon.png
Issue date: 01/16/1978
From: Dreher F, Moseley N, Reinmuth G
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:
References
PNO-78-006, PNO-78-6, NUDOCS 9806160095
Download: ML20249A134 (1)


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PRELIMINARY NOTIFICATION

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January 16, 1978 PRELIMINARYNOTIFICATIONOFEVENTORUNUSUALOCCURRENCE--PNO-7Er06 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 and is basically all that is known by IE staff on this date.

Facility:

Arizona Public Service Company Palo Verde Nuclear Generating Station Unit No. 2 Docket No. 50-529

Subject:

" CONTROLLED" DROP OF UPPER REACTOR VESSEL ASSEMBLY The upper reactor vessel assembly slated for Palo Verde Unit No. 2 experienced a " controlled" drop during handling operations at Combustion Engineering (CE), Chattanooga, Tennessee.

The upper vessel assembly includes the upper shell, nozzle course, and vessel flange.

The event occurred when the brake for the crane, which was holding the assembly, slipped, allowing the assembly to drop onto a cart.

The. car.t was crushed.

No damage was disclosed by a visual examination of the assembly h+2 by CE.

CE intends to radiograph the assembly to further verify whether damage was incurred.

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No media interest is expected.

A press release is not planned by the g

licensee nor NRC.

p A Region V inspector will followup with the Applicant-(Arizona Public

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Service Company) during the next routine inspection, scheduled for g

January 16, 1978.

6 Region V (San Francisco) received notification of this occurrence by d

telephone at 4:00 p.m. January 12, 1978, from the QA manager, of Arizona Public Service Company.

Contact:

FADreher, IE x27551 GWReinmuth, IE x27551 NCMoseley, IE x28484 Distribution:

TransmittedHSt///A Chairman Hendrie Commissioner Bradford Commissioner Kennedy S. J. Chilk, SECY C. C. Kammerer, CA Commissioner Gilinsky (For Distribution)

Transmitted:

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E. Volgenau, IE L. V. Gossick, ED0 '

E. G. Case, NRR Region g ///[

S. P. Hanauer, ED0 J. J. Fouchard, PA SSBldgOh (MAIL)

R. Hartfield, MIPC C. V. Smith, NMSS T. J. McTiernan, OIA t

R. G. Ryan, OSP R. Minogue, 50

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H. K. Shapar, ELD

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PRELIMINARY NOTIFICATION 980616009S 780116 PDR I&E PNO-78-OO6 PDR

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