ML20236L529

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PNO-77-027:licensee Has Suspended Concrete Placement Activities Due to Discovery of Extensive Cracking of Concrete in non-category I Turbine Pedestal Columns & in Wall of Category I Fuel Handling Building
ML20236L529
Person / Time
Site: South Texas STP Nuclear Operating Company icon.png
Issue date: 02/14/1977
From: Roy G, Thompson D, Warnick R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PNO-77-027-01, PNO-77-27-1, NUDOCS 9807130052
Download: ML20236L529 (1)


Text

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i PRELIMINARY NOTIFICATION February 14, 1977 1

(~ PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENdE--PNO-77-27 l

Th?s preliminary notification constitutes EARIY notice of an event of l

FOSSIBLE safety or public interest significance. The information l presented is as initiolly received without verification or evaluation and is banically all that is known by IE staff on this date. .

FACILITY: South Texas Project, Unit No.1 (DN 50-498)

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Houston Lighting and Power Company T' ^

SUBJECT:

' GUSPENSION OF CONCRETE PLACEMENT ACTIVITIES ,

l The licensee has suspended concrete placement activities due to discovery of extensive cracking of concrete in the non-Category I turbine pedestal columns and in a wall of the Category I Fuel Handling Building. Concrete placements in both areas took place the last week of January and the first week of February 1977. Engineering personnel of the licensee and Brown &

Root, Incorporated, in conjunction with a Portland Concrete Association representative, are investigating the cause of the problem.

A;RegionIVinspectorwillbedispatchedtothesiteonhebr'uary 15, 1977, g3 to evaluate the problem. l Media interest is not expected.

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( Region IV (Arlington) received initial notification of cracks in turbine pedestal on February 10, 1977, and of cracks in the Fuel Handling Building wall on February 14, 1977. ,

This information is current as of 9:00 a.m. February 14, 1977.

/

Contact:

RFWarnick, IE x27261 GWRoy, IE x27261 DThompson, IE x27541 o

Distribution: t; Chairman Rowden Commissioner Kennedy ,S. J. Chilk, SECY o; Commissioner Gilinsky C. C. Kammerer, CA G. F. Murphy, JCAE L. V. Gossick, EDO K. R. Chapman, NMSS R. G. Ryan, OSP S. H. hanauer, EDO E.' Volgenau, OIE J. A. Harris, PA B. C. Rusche, NRR H. K. Sha ar, ELD T. J. McTiernan, OIA Transmitted: PBldg l  ; E St. _; MNBBl  ; Luge  ;- .

PRELIMINARY NOTIFICATION -

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l 9807130052 770214 PDR I&E PNO-77-027 PDR c____-___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ =