ML20031E720
| ML20031E720 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 10/09/1981 |
| From: | Nichols T SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8110160349 | |
| Download: ML20031E720 (1) | |
Text
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%[J T. C. NICH OLS, J R.
October 9,1981 b
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OCT15 198>
NUCLean Ontpations C u.s.mcua ucougam Mr. Harold R. Denton, Director U
Office of Nuclear Reactor Regulation
'h ff U. S. Nuclear Regulatory Commission Washington, D. C. 20555
Subject:
Virgil C. Summer Nuclear Station Docket No. 50/395 Additional Seismic Information
Dear Mr. Denton:
This confirms information provided to your Staff in a meeting earlier today.
In informal discussions with USGS personnel earlier in the week regarding another matter, one of our consulstants learned that an unprocessed film record from the Jenkinsville strong motion accelerometer (SMA) for October 17, 1979, might yield peak accelerations equal to or possibly greater than those associated 27, 1978 M = 2.8 event. No information regarding with the well-documented August L
peak accelerations for any of the several events recorded by the SMA or by other instrumentation for that date had previously suggested such values. Apparently, the USGS has not until very recently attached any particular urgency to processing the SMA records for 1979 and later, and it is for this reason that neither we, nor anyone else to our knowledge (outside USGS) learned of it until this week.
We are attempting to obtain further, relevant information concerning this matter and will keep your Staff advised.
Since this matter relates to the seismic issue under litigation at the ASLB hearings, copies of this letter are being distributed to the service list in that proceeding.
Very truly yours,
/
T. C. Nichols, Jr.
RBW:TCN:rh 3-cc:
V. C. Summer B. A. Bursey g
]5 G. H. Fischer J. L. Skolds T. C. Nichols, Jr.
J. Ruoff f,.o '
H. N. Cyrus Herbert Grossman D. A. Nauman Frank F. Hooper 4
W. A. Williams, Jr.
Gustave A. Linenberger g
aim R. B. Clary Richard P. Wilson 0
- 0. S. Bradham Chairman, ASLAB g,
A. R. Koon J. B. Knotts, Jr.
,g,4i M. N. Browne NPCF File