05000324/LER-1982-106, Forwards LER 82-106/03L-0.Detailed Event Analysis Encl

Forwards LER 82-106/03L-0.Detailed Event Analysis Encl

ML20069H816
Person / Time
Site:	Brunswick
Issue date:	10/08/1982
From:	Dietz C CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20069H819	List: 05000324/LER-1982-106, Forwards LER 82-106/03L-0.Detailed Event Analysis Encl 05000324/LER-1982-106-03, /03L-0:on 820917,while Reviewing Surveillance Procedures,Determined That Emergency Bus Degraded Voltage Channel Function Test Not Sufficient to Verify Operability of Emergency Bus Degraded Voltage Relays.Test Revised
References
BSEP-82-2195, NUDOCS 8210190754
Download: ML20069H816 (2)

LER-1982-106, Forwards LER 82-106/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3241982106R00 - NRC Website

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-. Carolina Power & Light Company Brunswick Steam Electric Plant cra

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October 8, 1982 Tm 0

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SERIAL: BSEP/82-2195

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Mr.-James P. O'Reilly, Director E'

U. S. Nuclear Regulatory Commission Region II, Suite 3100

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101 Marietta Street N.W.

Atlanta, GA 30303

- BRUNSWICK STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-324 LICENSE NO. DPR-62 LICENSEE EVENT REPORT 2-82-106

Dear Mr. O'Pe111y:

In accordance with Section 6.9.1.9c of the Technical Specifications for Brunswick Steam Electric Plant, Unit No. 2, the enclosed Licensee Event Report is submitted. This report fulfills the requirement for a written report within thirty (30) days of a reportable occurrence and is in accordance with the format set forth in NUREG-0161, July 1977.

Very truly yours, IQ C. R. Dietz, General Manager Brunswick Steam Electric Plant RMP/mcg Enclosure cc:

Mr. R. C. DeYoung pc0FN.

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8210190754 821008 O

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o df LER ATTACHMENT - RO #2-82-106 Facility: BSEP Unit No. 2 Event Date: September 17, 1982 ECCS Emergency Bus Degraded Voltage Channel Functional Test, PT-12.7.3P, was determined inadequate in that it did not sufficiently verify the operability of the emergency bus degraded voltage relays. The PT relied on visual confirmation that a subject relay's target flag had tripped as verification of the relays' operability. The degraded voltage relays and their target flag counterpart relays are contained in separate transistor circuits, both fed from a common operating amplifier output; therefore, an applied test signal at the output, which trips the target flag, cannot be relied upon as verification of the operability of the corresponding relay and its associated circuitry.

As a result of this determination, the PT was revised on September 21, 1982, to verify the relay and its associated circuitry by measuring the trip output of the relay to an applied test signal.

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