ML19323F258

Forwards Interim Deficiency Rept Re Damage to Intermediate Metallic Conduit from Adjustable Threading Dies

ML19323F258
Person / Time
Site:	Grand Gulf
Issue date:	05/14/1980
From:	Dale L MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323F259	List: ML19323F258 ML19323F267
References
AECM-80-101, NUDOCS 8005280706
Download: ML19323F258 (2)

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. y' Ik MISSISSIPPI POWER & LIGHT COMPANY l Helning Build Mississippi P. O. B O X 16 4 0. J A C K S O N. MI S SIS S I P PI 3 9 2 0 5

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p ooveriou ospu ruc~r May 14, 1980 Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission

. Region II 101 Marietta Street, N.W., Suite 3100 Atlanta, Georgia 30^03 ATTENTION: Mr. J. . O'Reilly, Director

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416/417 File 0272/15525/15526 PRD-80/20, Status Report, Damage to Intermediate Mecallic Conduit from

.tijustable Threading Dies AECM-80/101

Dear Mr. O'Reilly:

On April 14, 1980, Mississippi Power & Light Company notified Mr. F.

Cantrell of your office of a Potentially Reportable Deficiency (PRD) at the Grand Gulf Nuclear Station (GGNS) construction site. The deficiency concerns damage to Intermediate Metallic Conduit (IMC) resulting from adjustable threading dies. The dies produced burrs and sharp edges on the conduit interior and caused cable insulation damage when the cables were installed.

The extent and safety implications of this deficiency remain under investigation. Sample portions of conduit have been tested to determine those sizes that are involved in this deficiency. We are in the process of pulling and inspecting cables in suspect conduits.

We expect to provide our final report and determination of reportability no later then July 15, 1980. Our status report on PRD-80/20 is attached.

This deficiency is O so oeing tracked by Bechtel Management Corrective Action Report (MCAR) - GGNS No. 74.

Yours truly, 0

v~PR 4 L. F. Dale Nuclear Project Manager JGC/JDR:lj

Attachment:

Status Report on PRD-80/20 cc: Mr. N. L. Stampley Mr. Victor Stello, Jr., Director / 0\g Mr. R. B. McGehee Division of Inspection & Enforcement h h\

Mr. T. B. Conner U. S. Nuclear Regulatory Commission Washington, D. C. 20555 8 0 05 28 u 70fr Member Middle South Utilities System __

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i AECM-80/101 i

f bec: Dr. D. C. Gibbs Mr. A. Zaccaria 4

Mr. J. N. Ward Mr. D. M. Lake Mr. J. P. McGaughy Mr. W, L. Nail ~

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Mr. T. E. Reaves Mr. C. K. McCoy Mr. J. W. Yelverton

! Mr. A. R. Smith Mr. Tom Houghton

! - Mr. M. D. Hunt j ,

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