ML20076G315
| ML20076G315 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 08/15/1983 |
| From: | Rhode G NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, 7194, NUDOCS 8308310108 | |
| Download: ML20076G315 (2) | |
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Y NIAGARA MOHAWK POWER CORPORATION i
NIAGARA MOHAWK 300 ERIE soutEVARD WEST sysaACUSE.N v 93202 GERALD K. RHOOE SENIOR VICE PRESIDENT August 15, 1983 (7194)
Mr. R. W. Starostecki, Director U.S. Nuclear Regulatory Commission Region I Division of Project and Resident Program 631 Park Avenue King of Prussia, PA 19406 Re: Nine Mile Point Unit 2 Docket No. 50-410
Dear Mr. Starostecti:
Enclosed is a 30 day final report in accordance with 10CFR50.55(e) for the problem concerning battery charges supplied by Power Conversion Products, Inc. This condition was reported via telecon to Mr. S. Collins of your staff on July 12, 1983.
f/ Ist K
Senior Vice President GKR/TRL:djm Enclosure xc: Director of Inspection and Enforcement U. 5. Nuclear Regulatory Comission Washington, D.C. 20555 Mr. R. Gram, Resident Inspector i
l 8308310108 330815 PDR ADOCK O$000 g
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NIAGARA M0 HAWK POWER CORPORATION NINE MILE POINT UNIT 2 DOCKET NO. 50-410 30-DAY FINAL REPORT FOR A PROBLEM CONCERNING BATTERY CHARGERS SUPPLIED BY POWER CONVERSION PRODUCTS, INC.
Description of the Problem The problem concerns the battery chargers (Model No. 3S-130-300CE) furnished by Power Conversion Products, Inc. During initial testing of the battery chargers, it was discovered that the charger units would not generate a DC output voltage when energized. This problem resulted from vendor wiring errors.
In addition, the high voltage trip printed circuit board did not operate in certain units.
The DC ammeter and AC breaker were also found to be defective.
Analysis of Safety Implications These problems could have resulted in the loss of the battery charger units, Therefore, which are a vital component of the standby DC distribution system.
if the problem were to have remained uncorrected, it could have adversely affected the safe operation of the plant.
Corrective Actions 1
1.
The vendor wiring errors will be corrected.
2.
Defective components will be replaced by the vendor.
These corrective actions will be completed by September 30, 1983.
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