ML13330A099
| ML13330A099 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/21/1980 |
| From: | Baskin K Southern California Edison Co |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML13311A240 | List: |
| References | |
| TASK-03-06, TASK-3-6, TASK-RR NUDOCS 8009020082 | |
| Download: ML13330A099 (2) | |
Text
Southern California Edison Company P. 0.
BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD. CALIFORNIA 91770 August 21, 1980 Director of Nuclear Reactor Regulation Attention:
Mr. D. M. Crutchfield, Chief Operating Reactors Branch No. 5 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D. C. 20555 Gentlemen:
Subject:
Docket No. 50-206 Additional Seismic Information San Onofre Nuclear Generating Station, Unit 1 By letter dated April 28, 1980 we submitted information pertaining to the seismic adequacy of San Onofre Unit 1 during the time that the seismic reevaluation of the plant was being performed. In a telephone conversation with members of theNRC Staff on July 11, 1980, certain backup information for that submittal was requested. The purpose of this letter is to provide the requested information. is a report entitled "Reduction in Free Field Ground Motion Due to the Presence of Structures."
This report summarizes available data which relates to the differences in ground motion recorded in structures and ground motion recorded in the free field.
Enclosures 2, 3 and 4 are copies of the following reports which were referenced in the April 28, 1980 submittal:
- 1. Seismic Performance of Piping in Past Earthquakes, Robert L. Cloud, submitted for presentation and publication at the Specialty Conference on Civil Engineering and Nuclear Power, September 15-17, 1980, Knoxville, Tennessee
- 2. On Instrumental Versus Effective Acceleration and Design Coefficients, J. A. Blume, Proceedings of the Second U. S. National Conference on Earthquake Engineering, EERI, August 22-24, 1979, Stanford University, California 8 0O 92Q 902
Mr. D.
August 21, 1980
- 3.
Experimental Investigations -
Correlation with Analysis, R.
Shepherd and P. C. Jennings, Proceedings of NSF Workshop, July 11-15, 1977, University of California, Berkeley If you have any questions on this information please let me know.
Very truly yours, K. P. Baskin Manager, Nuclear Engineering and Licensing Enclosure I/