ML20100D379
| ML20100D379 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 03/14/1985 |
| From: | Mangan C NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (55(E)-84-55), (NMP2L-0365), (NMP2L-365), NUDOCS 8504020428 | |
| Download: ML20100D379 (2) | |
Text
!
NUMOHAWK Y NIAGARA NBAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST SYRACUSE, N.Y.13202/ TELEPHONE (315) 4741511 March 14,1985 (NMP2L 0365)
Mr. R. W. Starostecki, Director U. S. Nuclear Regulatory Commission Region I Division of Project and Resident Programs 631 Park Avenue King of Prussia, PA 19406 Re: Nine Mile Point - Unit 2 Docket No. 50-410
Dear Mr. Starostecki:
Enclosed is a final report in accordance with 10CFR50.55(e) for the problem concerning the undersized welds in nultifunction support.
This problem was reported via tel-con to T.
Silko of your staff on December 3, 1984.
An interim report was submitted via our letter dated Decenter 28, 1984 Very truly yours, b
C. V. Vangan Vice President Nuclear Engineering and Licensing CVM/GG:cla
( 0819H) xc: Director of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, DC 20555 R. A. Gram, NRC Resident Inspector Project File (2) 8504020428 850314 PDR ADOCK 05000410 S
PDR b
/6 A[
]
~7 A J.
NIAGARA M0 HAWK POWER CORPORATION NINE MILE P0 INT UNIT 2
~
DOCKET NO. 50-410 Final Report for a Problem Concerning Undersized Welds in-Control Rod Drive Multifunction Support (55(e)-84-55)~
Description of the Problem The' problem concerns welds in the control rod drive multifunction support furnished by Reactor Controls, Incorporated. An inspection of the multifunction support identified five shop welds and five field welds that are smaller than shown on the_ drawings..This condition is documented in Reactor Controls, Incorporated Nonconformance Reports NMP-186 and 187.
Analysis of Safety Implications An evaluation of the subject welds performed by Reactor Controls, Incorporated, indicates that the welds provided are more than adequate to meet the minimum tiesign requirements. Therefore, if this condition were to have remained uncorrected, it could not have adversely affected the safety of
. operations of the plant.
It should be noted that Reactor Controls, Incorporated has reworked the_five field welds by adding additional weld material.
To provide additional' assurance, Reactor Controls, Incorporated will investigate other areas of multifunction support for similar conditions by June 1,1985. The Nuclear Regulatory Commission will be notified of any reportable deficiencies found during this investigation.