ML20207J264
| ML20207J264 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 11/21/1986 |
| From: | Mangan C NIAGARA MOHAWK POWER CORP. |
| To: | Kane W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (55(E)-86-22), (NMP2L-0941), (NMP2L-941), NUDOCS 8701080365 | |
| Download: ML20207J264 (3) | |
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Y NIAGARA NUMOHAWK NIAGARA MOMAWM POWEA CORPORATl0N/300 ERIE BOULEVARD WEST, SYRACUSE. N.Y.13202/ TELEPHONE (315) 474-1511 November 21, 1986 (NMP2L 0941)
Mr. W. Kane, Director U.S. Nuclear Regulatory Comission Region I Division of Reactor Projects 631 Park Avenue King of Prussia, PA 19406 Re:
Nine Mile Point - Unit 2 Docket No. 50-410
Dear fV. Kane:
Enclosed is an interim report, in accordance with 10CFR50.55(e), for the problen concerning insufficient flow rate for the hydrogen recorbiners.
This problem was reported via tel-con to G. Meyer of your staff on October 15, 1986.
Very truly yours, C. V 11angan Senior Vice President CVM/AZP/cla (1902H) xc:
J. H. Taylor Director of Inspection and Enforcement U.S. Nuclear Regulatory Connission Washington, DC 20555 W. Cook, NRC Resident Inspector ProjectFile(2) l
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w NIAGARA it0FAWK POWER CORPORATION NINE ilILE POINT - UNIT 2 DOCKET NO. 50-410 Interin Report for a Problen Concerning Insufficient Flow Rate for the Hydrogen Recorbiners (55(e)-86-22)
Description of the Problem During preoperational testing of the Nine Mile Point 2 Hydrogen Recortiners, 2HCS*RBNRIA/B, the design flow rate of 150 SCFil could not be attained.
Testing has indicated that the maxinun flowrate attainable is approxinately 60 SCFM, with water injection, and 90 SCFM without water injection.
An investigation of the causes for this insufficient flow has indicated that the design of the suction and discharge piping for the recorbiner units is inadequate in that the piping systen design, utilizes globe valves as contain-ment isolation valves, which causes a high restriction in these suction and discharge lines.
Niagara Mohawk is perforning extensive trouble shooting of the hydrogen recorbiner systen during the preoperational testing progran.
It is expected that this testing will be conplete by December 5,1986 and the final report will be submitted at that time.
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