ML18017B182

Quarterly Data Rept,Shearon Harris Nuclear Power Plant Monitoring Program,Apr-June 1980.

ML18017B182
Person / Time
Site:	Harris
Issue date:	07/21/1980
From:	CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML18017B181	List: ML18017B180 ML18017B182
References
NUDOCS 8007280513
Download: ML18017B182 (2)

Text

QUARTERLY DATA REPORT SHNPP SEISMIC MONITORING PROGRAM APRIL 1 .,'1980 JUNE 30 1980 Carolina Power 6 Light Company has completed another quarter, of operation of its seismic monitoring program at the Shearon Harris Nuclear Power Plant site near New Hill, North Carolina. During this period a total of 156 cultural events were recorded with an S-P of less than 5 seconds.

No local earthquakes were detected.

Of these 156 events, 142 were confirmed as being explosions by the responsible companies or agencies. The remaining 14 events displayed the signature and arrival pattern of previously identified cultural events.

and all of them occurred during daylight hours. Only one of these events was recorded on a weekend 'or holiday:

GMT S-P Date at Sta. 4 at Sta. 4 Probable Source 4-26-80 Saturday 16:52:49.1 4.4 Garner Quarry The signature and arrival pattern of this event are identical to 4 other events recorded during this quarter that were confirmed as being explosions from the Garner Quarry.

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