ML20249A044

PNO-78-016:on 780125,as Result of Filling Plant Cooling Water Reservior to within 15 Ft of Normal High Water Level, Micro Seismic Activity Was Recorded at 2.5 on Richter Scale of Seismic Monitors Operated by Licensee of State of Sc

ML20249A044
Person / Time
Site:	Summer
Issue date:	01/26/1978
From:	Henderson J, Reinmuth G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
References
PNO-78-016, PNO-78-16, NUDOCS 9806150363
Download: ML20249A044 (1)

Text

--- - -

s.

I PRELIMINARY NOTIFICATION h/

7 s- January 26, 1978 6

PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-78-16 This preliminary notification constitutes EARLY notice of an event of POSSIBLE safety or public interest significance. The information l presented is as initially received without verification or evaluation and is basically all that is known by IE staff as of this date.

)

FACILITY: South Carolina Electric and Gas Company l

.. Sumer, Unit No.1 l Docket No. 50-395 Fairfield County, South Carolina

SUBJECT:

MICR0 SEISMIC ACTIVITY As a result of filling the plant cooling water reservoir to within 15 -

l feet of the normal high water level, micro seismic activity has been experienced. At about 2:30 a.n. on January 25, activity was recorded at l , 2.5 on the Richter scale by seismic monitors operated by the licensee ,

! and the State of South Carolina. Monitoring of seismic activ.ity has .

been continuous during the reservoir filling. E!E l l m The licensee was interviewed by news media and the interview was  !

,[_.

l . broadcast on the 7:00 p.m. and 11:00 p.m. news by a Columbia, Q

South Carolina television station on January 25. A news release is /

not planned by the NRC. /

l This Preliminary Notification is issued for information only and no further action by IE is anticipated.

g 1

A;j Region II (Atlanta) received notification of this occurrence by Oi l telephone # rom the licensee at 8:30 a.m. on January 26. This information Ql 1s current as of 2:30 p.m. on January 26.

Contact:

JBHenderson, IE x27551 GWReinmuth, IE x27551 l Distribution: TransmittedHStk/O.7 l l Chairman Hendrie Commissioner Bradford Commissioner Kennedy S. J. Chilk, SECY C. C. Kammerer, CA Commissioner Gilinsky (For Distribution)

Transmitted: MNBB 67 P Bldg d 0 IE L. V. Gossick, EDO E. G . Cas e , NRR E. p enau'(

Region ll. W P S. H. Hanauer, EDO .s J. J. Touchard, PA SS Bldg $ / O (MAIL)

R. Hartfield, MIPC -C. V. Smith, NMSS T. J. McTiernan, 01A R. G. Ryan, OSP R. Minogue, SD

, H. K. Shapar, ELD .

1 l PRELIMINARY NOTIFICATION r.G 9906130363 780126 i

PDR IIsE l PNO-78-16 PDR L---------------------__