ML20111C257
| ML20111C257 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 02/22/1985 |
| From: | Counsil W NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| F0674A, F674A, SD-70, NUDOCS 8503150323 | |
| Download: ML20111C257 (2) | |
Text
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February 22,1985 Docket No. 50-423 F0674A Dr. Thomas E. Murley Regional Administrator Region I U.S. Nuclear Regulatory Commission 531 Park Avenue King of Prussia, PA 19406
Dear Dr. Murley:
Millstone Nuclear Power Station, Unit No. 3 Reporting of Potatial Significant Deficiencies in Design and Construction:
Non-Motor Operated Curtain Type Fire Dampers (SD-70)
In a January 16, 1985 telephone conversation between your Mr. T. Rebelowski and our Mr. 3. Putnam, Northeast Nuclear Energy Company (NNECO) reported a potential significant deficiency in the construction of Millstone Unit No. 3 as required by 10CFR50.55(e).
The potential significant deficiency involves non-motor operated curtain type fire dampers which may not close under flow (.onditions. These fire dampers are used in the HVAC systems at Millstone Unit No. 3 and are manufactured by Air Balance Company or Ruskin Manufacturing. We have determined that this is a significant deficiency for Millstone Unit No. 3.
All of the subject QA Category I fire dampers requiring closure under system flow will be tested in place for closure under design flow conditions.
Any dampers which fall this test will be evaluated on a case-by-case basis to determine the best course of corrective action and modified accordingly.
We consider this to be our final report for SD-70.
As discussed with Mr. T. Rebelowski, this report is being provided by February 22 rather than February 15,1985. We trust that the above information satisfactorily responds to your concerns.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY 1.
A']2M W.C.Counsil
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Seni r Vice President 8503150323 850222 PDR ADOCK 05000423 S
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Mr. 3. M. Taylor, Director Division of Inspection and Enforcement U.S. Nuclear Regulatory Commission Phillips Building 7920 Norfolk Avenue Bethesda, MD 20814