ML20069K312
| ML20069K312 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 04/19/1983 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, NCR-BL-2-P, NRC-BL-2-P, NUDOCS 8304260297 | |
| Download: ML20069K312 (2) | |
Text
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TENNESSEE VALLEY AUTHORITY e
CH ATTANOOG A. TENNESSEE 37401 400 Chestnut Street Tower II Q
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April 19, 1983 BLRD-50-438/83-05 g
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U.S. Nuclear Regulatory Commission
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Region II W
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Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNIT 1 - UNCONTROLLED PARTS FOR BATTERY CHARGERS FROM POWER CONVERSION PRODUCTS, INC. - BLRD-50-438/83 FINAL REPORT The subject deficiency was initially reported to NRC-0IE Inspector L. Watson on December 17, 1982 in accordance with 10 CFR 50.55(e) as NCR BL-2-P.
This was followed by our first interim report dated January 17, 1983 Enclosed is our final report. We consider 10 CFR Part 21 applicable to this deficiency.
If you have any questions concerning this matter, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY DSW L. M. Mills, Manager Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 OFFICI. AI isRSt8Wa88%g n x7 S
An Equal Oppcn tunity Employer
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- m ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIT 1 Ut* CONTROLLED PARTS FOR BATTERY CHARGERS FROM POWER CONVERSION PRODUCTS, INC.
NCR BL-2-P BLRD-50-438/83-05 10 CFR 50.55(e)
FINAL REPORT Descriotion of Deficiency Amplifier boards (replacement parts) purchased for the Class IE 125V de battery chargers were ordered by vendor part number from Power Conversion Products, Inc. (PCP), Charlotte, North Carolina. The same part number is also common to the non-Class IE 24V do, 48V de, and 125V de battery chargers; however, the amplifier boards are actually modified by the vendor for use in each respective type of charger.
The failure of the vendor to identify the differences between the amplifier boards caused the wrong amplifier board to be placed in the
. hen the board was inserted into the W
Class IE 125V de battery charger.
charger a fluctuation in current level was noted. This fluctuation was Since the chargers were only loaded to 5 amperes this from 0 to 5 amperes.
fluctuation was only a small percentage of the 200 amperes of rated current of the chargers.
Safety Implications This The wrong amplifier card resulted in erratic operation of the charger.
could result in an improperly or inadeouately charged battery which in turn could lead to a failure of safety-relates stems as this battery is the vital do power source for safety-related equipment in case of a loss of offsite power.
Corrective Action The corrective action consists of returning the incorrect board and replacing it with the proper one. PCP has supplied a new part number which The new is unique to boards for the 125V de class 1E battery chargers.
board has been received and functions correctly. Revised drawings showing the correct amplifier board number as 91-3269 have been distributed. To prevent recurrence, vendor manual parts lists have been revised to distinguish between parts to be used on the different battery chargers.
Also, TVA has instructed PCP to be more thorough in their drawing checking procedures. All corrective action has been completed.
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