ML18139B386

LER 81-012/03L-0:on 810506,seismic Instrumentation Found Not Calibr According to Tech Specs.Caused by Defective Procedures.Periodic Test Had Been Mislabeled as Calibr Procedure.Instrumentation Calibr Using Approved Procedure

ML18139B386
Person / Time
Site:	Surry
Issue date:	06/05/1981
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139B384	List: ML18139B383 ML18139B385 ML18139B386 ML18139B387 ML18139B388 ML18139B389
References
LER-81-012-03L, LER-81-12-3L, NUDOCS 8106090536
Download: ML18139B386 (2)

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ATTACHMENT SURRY POWER STATION, UNIT l DOCKET NO: 50-280 REPORT NO: 81-0l2/03L-O EVENT DATE: 05-06-81 TITLE OF EVENT: SEISMIC INSTRUMENT *NOT CAL I BRATED

l. DESCRIPTION OF EVENT:

With Unit No. l defueled and Unit No. 2 at power, it was determined that the station seismic instrumentation was not calibrated as required by Tech. Spec's.

This is contrary to T.S. - 4. l.A and is reportable per T.S. - 6.6.2.b(2).

2. PROBABLE CONSEQUENCES:

The on site seismic instrumentation is designed to accurately indicate and record seismic events. Although the instruments have not been*field calibrated, they have undergone semi-annual functional checks. There have not been any seismic events that would have required an evaluation of safety systems functional capabilities. Therefore, the health and safety of the general public were not affec:ted.

3. CAUSE:

The caase of this event is due to*defect:ive procedures; The periodic test was.

labeled as a calibration procedure, when:in~reality it was a functional test.

4. IMMEDIATE CORRECTIVE ACTION:

The immediate corrective action was to verify that the seismic instrumentation was functional using the existing procedure.

5. SUBSEQUENT CORRECTIVE ACTION:

The seismic instrumentation was calibrated using an approved calibration procedure.

6. ACTION TAKEN TO PREVENT RECURRENCE:

The calibration procedure will be included in the Periodic Test Program.

7. GENERIC IMPLICATIONS:

None.

., ...