PNO-III-86-009B, on 860206,small Earthquake Occurred.No After Shock Felt & No Instrumentation Registered Tremor. Earthquake on 860131 Resulted in No Structural Damage to Plant

PNO-III-86-009B:on 860206,small Earthquake Occurred.No After Shock Felt & No Instrumentation Registered Tremor. Earthquake on 860131 Resulted in No Structural Damage to Plant

ML20151U480
Person / Time
Site:	Perry
Issue date:	02/06/1986
From:	Knop R, Norelius C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-86-009B, PNO-III-86-9B, NUDOCS 8602110027
Download: ML20151U480 (1)

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A?710

-PRELIMINARY NOTIFICATION OF EVENT ~0R UNUSUAL OCCURRENCE--PNO-III-86-09B Date February 6,1986 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety cr public interest significance. The information is as initially received without varification or evaluation, and is basically all that is known by the Region III staff on this date.

Facility: Cleveland Elec. Illuminating Licensee Emergency Classification:

Perry Nuclear Power Plant Notification.of an Unusual Event Perry, OH 44081 Alert XX Site Area Emergency Docket Nos: 50-440; 50-441 General Emergency Not Applicable

. Subj:ct: -EARTHQUAKE (SECOND UPDATE)

Saismic instrumentation at John Carroll University in the Cleveland area registered a slight earthquake tremor at 1:36 p.m. (EST), February 6,1986. A spokesman for the university told R;gion III (Chicago) that he could not give a magnitude, but if he could it would be very small. .He added that the epicenter was located south of the Perry Nuclear Plant.

Th2 resident inspectors at Perry said they did not feel the aftershock. Plant seismic instrumentation also did not register the tremor. However, the after shock was felt by some area residents who called local public agencies for verification.

On January 31, 1986, the Cleveland area was struck by an earthquake registering 5.0 on the Richter scale. An NRC Augmented Investigation Team was dispatched to the site and d termined that there was no apparent structural damage to the Perry plant as a result of th: quake. A team is still on site.

In PNO-III-86-09 it was stated that the Palisades plant had no registered ground movement as a result of the quake in Michigan on January 31, 1986. It was later found that one instrument did register the quake. It is presently being analyzed.

The States of Ohio and Michigan will be notified.

Th3 resident inspectors notified Region III of the aftershock at 1:45 p.m. (EST),

February 6,' 1986. This information is current as of 4 p.m., (EST), February 6,1986.

CONTACT: R. Knop

'+'[ C. 'us FTS 388-5547 FTS 388-5717 DISTRIBUTION:

H. St. ED0 NRR E/W Willste Mail: ADM:DMB Chairman Palladino PA IE NMSS DOT:Trans only Comm. Zech ELD OIA RES Comm. Bernthal AEOD Comm. Roberts Comm. Asselstine SP @tto Regional Offices ACRS j SECY INP0 //.:4 NSA'; S. 2.t 0 I CA RIII Resideht Office '

PDR Licensee: . ,% i **1 (Corp. Office - Reactor Lic. Only)

B602110027 860206 fB h'b

$$-INIbe6-Oo9 pna Region III Rev. November'1985 l

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