ML17251A261

Forwards Request for Addl Info Re Proposed Steam Generator Tube Periphery Sleeving Development Program.Response Requested within 30 Days from Receipt of Ltr

ML17251A261
Person / Time
Site:	Ginna
Issue date:	09/07/1988
From:	Stahle C Office of Nuclear Reactor Regulation
To:	Mecredy R ROCHESTER GAS & ELECTRIC CORP.
References
NUDOCS 8809140188
Download: ML17251A261 (4)

Text

September 7, 1988 Docket No. 50-244 Dr. Robert C. Mecredy General

Manager, Nuclear Production Rochester Gas and Electric Corporation 89 East Avenue Rochester, N. Y. 14649-0001

SUBJECT:

PROPOSED STEAM GENERATOR TUBE PERIPHERY SLEEVING In our July 19, 1988 meeting the staff demonstrated its strong interest in the GINNA sleeve development program.

Although the effort is built on pt oven technology, we believe that there have been significant improvements in the technology to warrant our review of the program prior to your proceeding with the proposed sleeving.

>le ask that you provide the NRC with further information on the development program by responding to Enclosure 1, Request for 'Additional Information.

Your response is requested within 30 days from the receipt of this letter.

Oriiioaf aidoed$ C..

CarT Stah1e, Pdoject Manager Project Directorate I-3 Division of Reactor Projects I/II

Enclosure:

As stated cc:

See next page DISTRIBUTION:

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Robert C. Mecredy, General

Manager, Nuclear Production.

Rochester Gas and Electric Corporation R.

E. Ginna Nuclear Power Plant CC:

Harry H. Voigt, Esquire

LeBoeuf, Lamb, Leiby and MacRae 1333 New Hampshire

Avenue, N.W.

Suite 1100 Washington, D.C.

20036 Ezra Bialik Assistant Attorney General Environmental Protection Bureau New York State Department of Law 2 World Trade Center New York, New York 10047 Resident Inspector R.E.

Ginna Plant c/o U.S.

NRC 1503 Lake Road

Ontario, New York 14519 Stanley B. Klimberg, Esquire General Counsel New York State Energy Office Agency Building 2 Empire State Plaza

Albany, New York 12223 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Supervisor of the Town of Ontario 1850 Ridge Road

Ontario, New York 14519 Mr. Bruce A. Snow, Superientendent Nuclear Production Rochester Gas

& Electric Corporation 89 East Avenue Rochester, N.Y. 14649-0001 Charlie Donaldson, Esq.

Assistant Attorney General New York Department of Law 120 Broadway New York, New York 10271 Ms.

Donna Ross Division of Policy Analysis 5 Planning New York State Energy Office Agency Building 2 Empire State Plaza

Albany, New York 12223

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ENCLOSURE 1

Re uest For Information On Ginna Peri her Sleevin Pro ram 1.

Which experimental techniques will be used to determine the magnitude of residual stresses introduced by the bending/straightning operation?

Will enough specimens be tested to ensure that, the "worst case" condition is tested?

2.

What modifications to the previously reviewed and approved welding tools and ultrasonic testing devices are being made?

How will the new tools be qualified?

What are the "stress relief and thermal treatment" specifications for the Inconel 690 sleeve material?

3.

Have the effects of the multiple heat treatments (stress relief, and weld heat effect, and thermal treatment) been fully examined with respect to mechanical properties and corrosion resistance?

4.

In view of the extensive corrosion testing to qualify the original sleeve configuration, extensive corrosion testing should be performed on the new concept.

Of particular interest is the effect of the additional deformation and the added stress relief heat treatment on the corrosion resistance.

For example, accelerated corrosion condition test should be conducted.

The effects of faulted chemistry conditions should also be examined.

5.

Confirm that the eddy current testing system has performed to the sensitivity and accuracy as stated in the original licensing basis for the welded sleeve.