ML20093K093

Final Part 21 & Deficiency Rept Re Item 174 on Insulation Blanket Stitching (Electrical).Initially Reported on 840620. Condition Not Considered Reportable Per 10CFR50.55(e) or Part 21

ML20093K093
Person / Time
Site:	Waterford
Issue date:	07/13/1984
From:	Gerrets T LOUISIANA POWER & LIGHT CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-PT21-84-379-000 174, PT21-84-379, PT21-84-379-000, W3K84-1614, NUDOCS 8407300442
Download: ML20093K093 (3)

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a Louisiama POWER & LIGHT

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• NEW ORLEANS. LOUISIANA 70174 * [504) 366-2345 EuOdYS July 13, 1984 W3K84-1614 Q-3-A35.07 C

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Mr. John T. Collins '

j 2 Regional Administrator, Region IV I h U. S. Nuclear Regulatory Commission 3

A g g jggd 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012 { -

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REFERENCE:

Telecon C. Hooper (LP&L) and M. Murphy (NRC IV) on June 20, 1984

SUBJECT:

Waterford SES Unit No. 3 Docket No. 50-382 Potentially Reportable Deficiency No. 174

" Insulation Blanket Stitching (Electrical)"

Final Report On June 20, 1984, a deficiency with the Electrical Blanket Insulation (Insulco Heymc Blanket) was reported as FRD No. 174. Further evaluation of this deficiency indicates this condition is not considered reportable pursuant to 10CFR50.55(e) and/or Part 21.

EVALUATION Potantially Reportable Deficiency No. 174 described the separation of the cerablanket filler material in the " Insulco Heymc Blanket used to develop the equivalent of one (1) inch air space protection to the electrical raceways. The separation occurred during handling as a result of the cerablanket filler being compressed during stitching between the outer layers of siltemp material.

Applied Physics performed an analysis in New York and determined that two layers of the Siltemp material alone will provide eriough of a thermal barrier when installed between two raceways to prevent a fault in the cable of one raceway from damaging the cables of the other raceway. The results of this analysis satisfy the separation requirements of Regulatory Guide 1.75 as committed to by the FSAR.

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Mr.-John T.. Collins July 13, 1984 W3K84- 1614 Page 2 EVALUATION (Continued)

This deficiency was initially-identified as a Potential Part 21 based on the fact-that these blankets were being fabricated off-site. Ebasco Quality Assurance found that these blankets were being fabricated unde: B&B Construction Procedures and Quality Program at an off-site location. As these blankets were being. fabricated for this site under the Quality Program of B&B, it is not reportable per Part 21.

Based on the above evaluation LP&L considers this condition is not reportable pursuant to 10CFR50.55(e) and/or Part 21.

Very truly yours, tf +zrf T. F. Gerrets Corporate Quality Assurance Manager TFG:CNH:VBR cc: Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Director Office of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. E. L. Blake Shaw, Pittman, Potts & Trowbridge 1800 M Street, N.W.

Washington, D.C. 20036 Mr. W. M. Stevenson Monroe & Lemann 1424 Whitney Building New Orleans, Louisiana 70130

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Mr. John T. Collins July 13, 1984 W3K84 1614 Page 3 cc: Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 30339 Atlanta, Georgia Mr. W. A. Cross 7910 Woodmont Avenue Suite 1200 Bethesda, Maryland 20814 Mr. K. W. Cook Waterford 3 SES

, Post Office Box B Killona, Louisiana 70066 l

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