ML20096A167
| ML20096A167 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 08/20/1984 |
| From: | Gerrets T LOUISIANA POWER & LIGHT CO. |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| REF-PT21-84-429-000 115, PT21-84-429, PT21-84-429-000, W3K84-1928, NUDOCS 8408300521 | |
| Download: ML20096A167 (3) | |
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I Louisiama MioDLc south UTIUTIES SYSTEM August 20, 1984 W3K84-1928 Q-3-A35.07.115 b h..-
J' Mr. John T. Collins Regional Administrator, Region IV k
M2d kl U. S. Nuclear Regulatory Cobmission i
611 Ryan Plaza Drive Suite 1000 J -
Arlington, Texas 76012 L
REFERENCE:
Telecon C. Hooper (LP&L) and M. Murphy (NRC IV) on July 19, 1984
Dear Mr. Collins:
SUBJECT:
Waterford SES Unit No. 3 Docket No. 50-382 Significant Construction Deficiency No. 115
" Johns-Manville Micro-Lok Fiberglass Insulation Fluoride Levels" Final Report In accordance with the requirements of 10CFR50.55(e), we are hereby providing two copies of the Final Report of Significant Construction Deficiency No. 115
" Johns-Manville Micro-Lok Fiberglass Insulation Fluoride Levels". This item was previously reported as PRD No. 175.
Very truly yours,
$ 2Anet T. F. Gerrets Corporate Quality Assurance Manager TFC:CNil:VBR Attachment ec: Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C.
20555 8408300521 840820 PDR ADOCK 05000392 J.b-)M
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-Mr. John-T.' Collins.
August' 20, 1984 W3K84-1928 E age-2 P
acc: 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 Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 Mr. W. A. Cross 7910 Woodmont Avenue Suite 1200 Bethesda, Maryland 20814
c f
er en FINAL REPORT OF
'SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 115
' " JOHNS-MANVILLE MICRO-LOK FIBERGLASS INSULATION FLUORIDE LEVELS
' INTRODUCTION
- This report is submitted pursuant to 10CFR50.55(e).
It describes the problem of unacceptable high fluoride levels in " Micro-Lok" insulation supplied by Johns-Manville.
To'the best of our knowledge,~this has been reported pursuant to 10CFR21, by
. Johns-Manville.
DESCRIPTION OF THE PROBLEM' Johns-Manville, supplier of " Micro-Lok" fiberglass insulation, informed AIS Joint Venture,'our insulation subcontractor, that several lots of piping insulation were supplied to Waterford #3 which contains fluoride levels slightly higher than those allowed by NRC Regulatory Guide 1.36.
Regulatory Guide 1.36 addresses non-metallic thermal insulation for austenitic stainless steel structures, systems and components important to safety.
Its purpose is to preclude stress corrosion cracking, caused by leaching of halide (i.es Fluoride and Chloride) ions from the insulation. The Ebasco position, as stated in the FSAR, is to comply in full with the requirements of this Regulatory Guide.
SAFETY EVALUATION Significant Construction Deficiency No.115 is not reportable under 10CFR50.55(e) because all insulated safety related austenitic stainless steel systems and components were determined not to have been insulated with
" Micro-Lok". Therefore, there are no adverse afftets to the safety of the plant.
CORRECTIVE ACTION Utilizing information supplied by AIS Ebasco Service Site Engineering (ESSE) determined that the affected lots of Micro Lok insulation were not used to insulate safety related'austenitic stainless steel systems and components at Watefford #3.
Since the present situation has been determined to be satisfactory, no corrective action is required.
This report is. submitted as the Final Report.
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