ML20134N386

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Requests That Plant Be Shut Down Asap Pending Complete Review of New Seismic Risk
ML20134N386
Person / Time
Site: San Onofre  Southern California Edison icon.png
Issue date: 09/22/1996
From: Dwyer S
AFFILIATION NOT ASSIGNED
To: Jackson
NRC OFFICE OF PUBLIC AFFAIRS (OPA)
Shared Package
ML20134N300 List:
References
NUDOCS 9611260310
Download: ML20134N386 (1)


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From: stephen dwyer <smd9wdc. net > l To: WNDI.WNP9(opa) I

Date
9/22/96 6:29pm l

Subject:

San Onofre Nuclear Power Plant Risk l

l l

Dear Dr. Jackson,

l I am a geologist in Southern California, and I am deeply concerned by the l current situation at San Onofre NPP. The design criteria for this old plant was 0.75 G's acceleration.

With the new information gathered at the Landers and Northridge Quakes, this l criteria is fatally flawed. The accelerations recorded at Northridge exceeded 1

1.8 3's !!! and it was only a Richter 7+ quake. Horizontal offsets of up to 20 feet in the Landers quake were also way beyond geologists and seismologists estimates. Tho whole science

! in is disarray. Also the Northridge fault was a " Blind Thrust" and not mapped or assessed. If we have a larger quake here on the San Andreas, or a smaller one closer to the plant, well I hate to imagine...

What's even worse is the fact that scientists are not able to give us the info we need tu evaluate the situation.

Many engineers were outraged that I would even bring up this miscalculation.

l There is a conspiracy of silence that is deafning. Please shut down the plant l asap pending a complete review of this new seismic risk. This old plant isn't I worth saving anyway. We now consider it the greatest such risk in the world today. A Chernobyl at the beach, while the rest of S. CA crawls out from the rubble will be more than this civilazation could survive. Please do something! l Thank you, Stephen Dwyer Southwest Research Foundation smd@wdc. net (714) 731-1335 l

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