ML19247A748

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Confirms NRC Understanding of Actions & Procedures Taken Re Discovery of Voids in Unit 1 Concrete Containment Wall, Lift 8 & Impact of Voids on Other safety-related Concrete Placements on Site
ML19247A748
Person / Time
Site: South Texas  
Issue date: 06/22/1979
From: Seyfrit K
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To: Eric Turner
HOUSTON LIGHTING & POWER CO.
References
NUDOCS 7908020259
Download: ML19247A748 (2)


Text

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1 NUCLEAR REGULATORY COMMISSION

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REGION IV

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611 RYAN PLAZA DRIVE, SUITE 1000

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AR LINGTON, TEX AS 76012

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June 22,1979 Docket No. 50-498 50-499 Houston Lighting and Power Company ATIN:

Mr. E. A. Turner, Vice President Power Plant Construction and Technical Services Post Office 3ox 1700 hous ton, Texas 77001 Gentlemen:

This refers to the telephone conversation between you and Mr. W. C. Seidle of this office on June 22, 1979, concerning voids in the concrete that were dis-covered in Lif t 8 of the South Texas Project, Unit 1 containnent wall and the icpact of the presence of the voids on other safety-relnted concrete placements at the site.

Based on the June 22, 1979, telephone conversation, we understand that you have, or plan to:

1 Issue an order effective June 22, 1979, to stop placement of safety-related concrete at the South Texas Project site.

2.

Review concrete placement procedures to determine if inadequate _ procedures cay have contributed to the formation of voids discovered in Lif t 8.

3.

Review the adequacy of the mix design used for the containaent walls.

4.

Review the adequacy of the ratio of Quality Control personnel to construc-tion personnel assigned to placecent activities.

5.

Review the adequacy of the ratio of supervisory personnel to placecent personnel.

6.

Review the adequacy of concrete preplacement planning.

7.

Review the adequacy of lighting provided at the point of placement.

8.

Contact the Region IV office prior to resumption of placement of safety-related concrete.

446 232 CERTIFIED MAIL - RETURN RECEIPT REQUESTED l'

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9 Houston Lighting and Power Company June 22, 1979 If your understanding of this matter is inconsistent with the above, please contact this office ic=ediately.

Sincerely.

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. V. Seyfrit h Director A.=

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