ML17251A922
| ML17251A922 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 12/30/1986 |
| From: | Diianni D Office of Nuclear Reactor Regulation |
| To: | Kober R ROCHESTER GAS & ELECTRIC CORP. |
| References | |
| TAC-55300, NUDOCS 8701050556 | |
| Download: ML17251A922 (4) | |
Text
Docket No. 50-244 Mr.
Roger W. Kober, Vice President Electric and Steam Production Rochester Gas 8 Electric Corp.
89 East Avenue Rochester, New York 14649 gag g 0 3986
Dear Mr. Kober:
SUBJECT:
CONTAINMENT TENDON VISUAL INSPECTION RE(UIREMENT By letter dated December 1, 1983, Rochester Gas and Electric Corporation, the licensee of R.
E. Ginna Nuclear Power Plant requested a one time exemption from the technical specification section 4.4.4. 1(d).
Section 4.4.4. 1(d) requires that all tendons are to be inspected if more than 20 wires (in 14 tendons) are found defective since the last surveillance inspection.
The exemption request resulted from an incident that revealed 24 of 90, 1/4 inch diameter steel wires in tendon No.
75 were found broken.
Since then the remaining wires in tendon No.
75 were retensioned up to the maximum allowable stress level (i.e.
70X of the guaranteed ultimate tensional strength) and the section of the containment covering five tendons including tendon No.
75 was reanalyzed.
The reanalysis performed in 1983 showed that the contributing tendon load to the containment exceeded the minimum load requirement on a per foot basis by 5X.
On this basis the licensee has determined and we agree that the exemption request is no longer necessary nor required.
In regard to future, inspections, the broken wires in tendon No.
75 need not be considered in the evaluation of the tendon stress surveillance specified in section 4.4.4 of the technical specification since these wires are no longer needed to perform their intended function.
We consider our review of this matter complete and TAC No.
55300 will be closed as of the date of this letter.
Sincerely, cc's:
See Next Page l~f Dominic C. DiIanni, Project Manager Project Directorate 81 Division of PWR Licensing-A Office:
PM/PAO81$8~
PO/PAOiP1 $ g $
Surname:
DDiIanni/tg GLear Date:
12/A/86 12/g 2/86 g70 gQQOS~
pgp0pQ44 g Bb1230 PDR ADOCl'DR
1 t
M 4
llr. Roger W. Kober 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 631 Park Avenue King of Prussia, Pennsylvania 19406 Supervisor of the Town of Ontario 1850 Ridge Road
- Ontario, New York 14519 Jay Dunkleberger Division of Policy Analysis 5 Planning New York State Energy Office Agency Building 2 Empire State Plaza
- Albany, New York 12223
Distribution Copies:
gDocket:Fi l~es NRC PDR Local PDR PAD81 r/f PAD81 p/f TNovak, Actg.
DD NThompson, DHFT OGC-Bethesda EJordan BGrimes JPartlow GLear PShuttleworth DDiIanni ACRS (10)
LFMB