ML19347C689
| ML19347C689 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Calvert Cliffs, Oconee, Palisades, Point Beach, Arkansas Nuclear, Turkey Point, Crystal River, Ginna, Farley, Robinson, Rancho Seco, Zion, Fort Calhoun, Trojan  |
| Issue date: | 11/25/1980 |
| From: | Eisenhut D Office of Nuclear Reactor Regulation |
| To: | ROCHESTER GAS & ELECTRIC CORP. |
| References | |
| GL-80-101, NUDOCS 8101050124 | |
| Download: ML19347C689 (3) | |
Text
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k UNITED STATES yye g
NUCLEAR REGULATORY COMMISSION g
aE WASHINGTON. D. C. 20555
'N.... /
November 25, 1980 TO OPERATING REACTORS WITH PRESTRESSED CONCRETE CONTAINMENT STRUCTURES Gentlemen:
SUBJECT:
Inservice Inspection Programs for Prestressed Concrete Containment Structures The Office of Standards Development is in the process of awarding a contract to Oak Ridge National Laboratories to compile and review the containment inservice inspection (ISI) records of all operating nuclear power plants with greased prestressing tendons. The purpose of this contract is to assess the data accumulated to date on the ISI of greased tendons in containments, and to determine the effectiveness of these programs.
The contractor will review Regulatory Guides 1.35 and 1.35.1 and the relevant draft of the ASME Section XI Working Group on ISI of Concrete Pressure Components.
In addition, the contractor is being asked to visit a few sites to observe the ISI of greased prestressing tendons. The contractor will then be asked to make recomendations to improve the existing programs.
With this letter, we are recuesting voluntary submissions of existing data, sumaries and records of the ISI tests of containments with areased pre-stressing tendons, which should contain the following information:
a.
Sample size and method of samole selection, b.
Procedure for lift-off testing, c.
Procedure for testing of corrosion inhibiter (i.e., grease),
d.
Procedure for tendon material testing, Acceptance and rejection criteria used for the test programs, and e.
f.
Repair, replacement and corrective actions.
i cluded. We also welcome Information already reported to the NRC need not be n
any coments, observations or suggestions you may consider relevant to this effort.
In your response please indicate any ISI tests planned between December 1980 and June 1981 that our contractor could observe.
Vlot oS*/W
s
. November 25, 1980 The above infomation should be sent to, Chief, Structures and Components Standards Branch, Office of Standards Development, U.S. Nuclear Regulatory Commission, L 3hington, D.C. 20555 by December 31, 1980.
For further information cscerning this project, contact H'ns Ashar at (301) 443-5997.
Sincerely, L
tl r
Eisenhut, Director Division of Licensing Office of Nuclear Reactor Regulation
Enclosure:
List of. plants with Prestressed Concrete Containment Structures 9
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\\
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a NUCLEAR POWER PLANTS WITH PRESTRESSED CONCRETE CONTAINMENT STRUCTURES 1.
Arkansas Nuclear 1 Arkansas Power & Light Co.
2.
Calvert Cliffs 1 & 2 Baltimore Gas & Electric 3.
Fort Calhoun 1 Omaha Public Power District 4.
Ginna N.P.S.
Rochester Gas & Electric 5.
Millstone N.P. 2 Connecticut Light & Power Co.
6.
Oconee N.S. 1, 2 & 3 Duke Power Company 7.
Palisades Consumers Power Company 8.
Point Beach 1 & 2 Wisconsin Electric & Power Wisconsin & Michigan Power 9.
Rancho Seco 1 Sacramento Municipal Utility
- 10. Robinson, H.B. 2 Carolina Power & Light
- 11. Trcjan Nuclear Plant Portland General Electric
- 12. Turkey Point 3 & 4 Florida Power & Light
- 13. Zio, Station 1 & 2 Commonwealth Edison Company
- 14. Crystal River 3 Florida Power Company 15.
J. M. 'Farley N.P.1 & 2 Alabama Power Company
-