ML20197G383
| ML20197G383 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 04/25/1984 |
| From: | Schierling H Office of Nuclear Reactor Regulation |
| To: | Case E, Harold Denton, Edison G NRC |
| Shared Package | |
| ML20197G068 | List:
|
| References | |
| FOIA-86-744 NUDOCS 8405150444 | |
| Download: ML20197G383 (1) | |
Text
,
Docket Nos.: 50-275 APR 2 5 N Docket File 50-275/323 l
and 50-323 PRC System
(
LB#3 Reading l
JLee HSchierling MEMORANDUM FOR:
H. R. Denton LChandler, OELD E. G. Case GWKnighton G. Edison D. Eisenhut R. Purple H. Thompson R. Vollmer R. Mattson T. Spets l
J. Taylor G. Holohan I
T. Novak G. Lainas F. Miraglia l
THRU:
George W. Knighton, Chief Licensing Branch No. 3 Division of Licensing FROM:
Hans Schierling, Project Manager Licensing Branch No. 3 Division of Licensing
SUBJECT:
DAILY HIGHLIGHT DIABLO CANYON An earthquake of magnitude 6 on the Richter scale occurred on Tuesday, April 24, 1984 at 1:15 pm PST on the Calaveres Fault in central California with the epicenter approximately 12 miles east of San Jose. At the Diablo Canyon site (approximately 150 miles south) the event did not trip the Kinemetric seismic instrument which has a trip level of 0.01 g.
The event was registered on a second, very sensitive instrumentation system. The system has 22 sensors throughout the plant. Prior to having the tape output analyzed offsite the plant staff evaluated 4 output tapes, the highest acceleration of which was 0.00056g.
444 0425 AnnCK 05000275 i
g
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