ML20084A348

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AO 3-2-15:during 731030 Insp,Leaks Observed at Socket Weld Branch Connections for Vents S-47 & S-51.Cause & Corrective Actions Will Be Provided Upon Completion of Exam
ML20084A348
Person / Time
Site: Indian Point Entergy icon.png
Issue date: 10/31/1973
From: Cobean W
CONSOLIDATED EDISON CO. OF NEW YORK, INC.
To: James O'Reilly
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20084A337 List:
References
AO-3-2-15, NUDOCS 8304050167
Download: ML20084A348 (1)


Text

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October 31, 1973 1

Re:

Indian Point Unit No. 2 l

Facility Operating License DPR-26 A.O. 3-2-15 Mr. James P. O'Reilly, Director Regulatory Operations, Region I U. S. Atomic Energy Commission 631 Park Avenue

' King of Prussia, Pennsylvania 19406

Dear Mr. O'Reilly,

In accordance with the requirements of Technical Specification 6.12.2.of Facility Operating License DPR-26, the following re-port is provided:

During the course of routine plant stattis inspections on October 30, 1973, leaks were observed at the 3/4 inch pipe to socket weld branch connections for vent valves S-47 and S-51 associated with the Resid-ual Heat Removal (RHR) System.

At the time of these observations, the reactor was depressuri::ed and in the cold shutdown condition, These venting provisions are not required for operation.

leaks of a similar nature have occurred before on both of these co Since nections, we plan to eliminate the pipe and valvo assemblics at these particular points to eliminate any vibration induced cyclic stress which might have contributed to the failures.

The vent as-lings welded to the RHR System.semblies will be replaced with socket the RHR System has been made and no other leaks were observed.A su 3

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An investigation, including, to the extent feasible, metallurgical examinationu, is underway.

The results of this investigation and a

i final corrective action will be provided in a follow-up report i

Mr. Anthony Fasano of your office was apprised of the circumstances of thin occurrence.by Mr. John M. Makepeace, by telephone on October 30, and October 31, 1973.

Very truly yours, QMdo tu

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Warren R. Cobean, Jrh

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