ML20107G307
| ML20107G307 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 09/27/1984 |
| From: | Mangan C NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (55(E)-84-34), (NMP2L-0172), (NMP2L-172), NUDOCS 8411070311 | |
| Download: ML20107G307 (2) | |
Text
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NIAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST SYRACUSE, N.Y.12?O2/ TELEPHONE (31") 474-1511 September 27, 1984 (NMP2L 0172)
.Mr. R. W. Starostecki, Director U. S. Nuclear Regulatory Comission Region I Division of Project and Resident Programs 631 Park Avenuo King of Prussia, PA 19406 Re: Nine Mile Point - Unit 2 Docket No. 50-410
Dear Mr. Starostecki:
Enclosed is an incerim report, in accordance with 10CFR50.55(e), for the problem concerning Rosemount master trip units.
This condition was reported via tel-con to S. Collins of your staff on August 28, 1984.
Very truly yours, C. V. Manga Vice President Nuclear Engineering and Licensing CW1/GG/pbd xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission
!iashington, DC 20555 R. A. Gram, MtC Resident Inspector Project File (P.)
8411070311 840927 PDR ADOCK 05000410 S
PDR 16 $_,
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NIAGARA M0 HAWK POWER CORPORATION NINE MILE POINT - UNIT 2 000(ET NO. 50-410 Interim Report.for a Problem Concerning Rosemount Master Trip Units (55(e)-84-34)
Description of the Problem During the field acceptance test on the Rosemount master trip units, it was
. noticed that some of the units exhibited a spurious and random operation of the setpoints.
These units are used in Nucl ear Steam Supply System safety-related systems.
Corrective Action The corrective action is still being investigated by General Electric Company and a final report will be submitted by Decenber 12, 1984 l
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