HL-2247, Special Rept:On 920506,discovered That Annual 8 H Battery Discharge Test on Lighting Unit 2R242-E104 Had Not Been Performed in 1991.Caused by Personnel error.Battery-powered Emergency Lighting Demonstrated Operable

Special Rept:On 920506,discovered That Annual 8 H Battery Discharge Test on Lighting Unit 2R242-E104 Had Not Been Performed in 1991.Caused by Personnel error.Battery-powered Emergency Lighting Demonstrated Operable

ML20097D227
Person / Time
Site:	Hatch
Issue date:	06/05/1992
From:	Beckham J GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HL-2247, NUDOCS 9206100015
Download: ML20097D227 (5)

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H W hf't W HL-2247 003531 June 5, 1992 U.S. Nucisar Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 PLANT HATCH - UNIT 2 NRC DOCKET 50-366 OPERATING LICENSE NPF-5 SPECIAL REPORT 2-92-003 MISSED SURVEILLANCE AND IN0PERABILITY OF BATTERY POWERED EMERGENCY LIGHTING VNITS RESULT IN A SPECIAL REPORT AS RE0VIRED BY THE FIRE HA7ARD ANALYSIS Gentlemen:

In accordance with the Unit 2 Technical Specifications and the Fire Hazards Analysis (FHA), Georgia Power Company is submitting the enclosed Special Report concerning a missed surveillance and inoperability of battery powered emergency lighting units. These events occurred at Plant Hatch - Unit 2.

Sincerely, (0:: [ / .. /d% n

[J.T.Beckham,Jr.

JKB/cr

Enclosure:

Special Report 2-92-003 cc: (See next page.)

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Georgialbwer mk U.S. Nuclear Regulatory Commission June 5, 1992 Page Two cc: Georuia Power Comoany Mr. H. ! . Sumner, General Manager - Nuclear Plant NORMS U.S. Nuclear Regulatory Commission. Washinataa. D.C.

Mr. K. Jabbour, Licensing Project Manager - Hatch U.S. Nuclear Reaulatory Coqmission. Reaion 11 Mr. S. D. Ebneter, Regional Administrator Mr. L. D. Wert, Senior Resident inspector - Hatch 003531 700171.

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ENCLOSURE PLANT HATCH - UNIT 2 NRC DOCKET 50-366 OPERATING LICENSE NPF-5 SPECIAL REPORT 2-92-003 HISSED SURVEILLANCE AND INOPERABillTY OF BATTERY P0C RED EMERGEN; IGHTING UNITS RESULT IN A SPECIAL REPORT AS RE0VIRED BY THE FIRE HA7ARD ANALYSIS A. RE0VIREMENT FOR REPORT This report is required by the Unit 2 Technical Specifications Section 6.9.2 whica states that Special Reports for fire prctection equipment operating and surveillance requirements shall be submitted as required by the Fire Hazards Analysis (FHA) and its Appendix B requirements.

FHA Appendix B, Section 1.9.1, states, "All self-contained, battery-powered emergency lighting units required to support unit shutdown in the event of a fire and coincident loss of offsite power shall be OPERABLE." The ACTION statement requires that in the event a battery-powered emergency lighting unit is inoperable for greater than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, a special report must be submitted to the Commission within 30 days. Section 2.9.1.b requires that these lighting units be tested once per 12 months by performing an 8-hour battery discharge test. In the events described herein, it was discovered that the surveillance had not been performed on one of the lighting units as required, and one other light remained inoperable for greater than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, therefore, a Special Report is required.

B. UNIT STATUS AT TIME OF EVENT On 5/6/92 and 5/21/92, Unit 2 was in the Run mode at a power level of 2435 CMWT (100 percent rated thermal power).

C. DESCRIPTION OF EVENT On 5/6/92, non-licensed engineering personnel were conducting a review of procedure 42SV-FPX-003-05, " Emergency Lighting Surveillance." The procedure provides guidelines for the inspection and functional testing of the Remote Shutdown Path Emergency Lighting Units which implement the requirements of fire protection operating and surveillance requirement: of Appendix B Section 2.9.1.a and 2.9.1.b of the FHA. This is accomplished by performing a monthly inspection of the physical condition of indicating lamps, electrolyte level etc., as well as conducting an 8-hour battery discharge test on about one-twelf th of the lighting units approximately every 31 days, such that all the lights are tested at least once per year.

HL-2247 003531 E-1

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. ENCLOSURE (Continued)

SPECIAL REPORT 2-92-003 MISSED SURVEILLANCE AND IN0PERABILITY OF BATTERY POWERED EMERGENCY LIGetNG UNITS RESULT IN A SPECIAL REPORT AS RE00,nED BY THE FIRE HAZARD ANALYSIS During the review, the personnel discovered that the annual 8-hour battery discharge test on lighting unit 2R42-E104 had not been performed in 1991 as required. The test should have been performed on the light i, January, 1991. Deficiency Card (DC) 2-92-1465 was written to document the deficiency as required by plant procedures. No additional deficiencies in the surveillances of other emergency lighting units were identified by a review of the procedure. A review of more recent documentation showed that light ~2R42-E104 had been verified operable by performing an 8-hour battery discharge test per procedure 42SV-FPX-003-0S during its scheduled surveillance on 1/6/92.

On 5/18/92, non-licensed maintenance personnel were performing the annual 8-hour battery discharge test on lighting init 2R42-E039 per procedure 42SV-FPX-003-05. Caring performance of thi test, the light failed to illuminate bright and clear for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> as r(quired by the procedure. DC 2-92-1575 was written to document the failure of the subject light and initiate corrective hetions. Limiting Condition for Operations (LCO) 2-92-335 was initiated on 5/18/92 at 1200 CDT, by licensed Operations personnel to track corrective actions, and to ensure compliance with the FHA. However, for reasons given later in this report, the light could not be restored to operable status within the 77-hour period allowed by the FHA, Appendix B, Section 1.9.1. DC 2-92-1597 was written to document the fact that light 2R42-E039 remained inoperable for greater than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

Following completion of repairs on the failed light and the satisfactory completion of testing per the procedure, the light was restored to operable status on 5/22/92, and LC0 2-92-335 was terminated.-

D. CAUSE OF EVENT The cause for the missed surveill.oce on lighting unit 2R42-E104 is personnel error. The specific lighting units to be tested at designated times are shown on a computer-generated surveillance task printout which, along with a copy of the surveillance procedure, is given to Maintenance personnel for task performance. In this event, Surveillance Task Sheet 1-3000-5 dated 12/26/90, correctly identified light 2R42-E104 as one to be tested; however, the test was incorrectly marked "N/A" (not applicable) by the individual performing the procedure. As a result -the surveillance was net performed as required. Since more than one individual was involved in performance of the tests on the 73 lighting units to be tested during that surveillance period, the individual who marked the test "N/A" for the light could not be identified.

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, ENCLOSURE (Continued)

SPECIAL REPORT 2-92-003 MISSED SURVEILLANCE AND INOPERABILITY OF BATTERY POWERED EMERGENCY LIGHTING UNITS RESULT IN A SPECIAL REPORT bS.RI.00 RED.BY THE FIRE HAZARD ANALU15 In the second event, Maintenance personnel troubleshooting the failure of lighting unit 2RG-E039 determined that a defective battery caused the light to fail. After replacing the battery, the new battery was charged for approximately 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and then the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> discharge test was conducted.

After the test, the light failed to illuminate. Further investigation determined that a defective charging module was preventing the battery from holding its charge, thus, resulting in failure of the light to illuminate.

The defective charging module was replaced and the battery was charged again for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The 8-hour battery discharge test was then conducted satisfactorily. The time needed to determine the existing battery and tnttery charging module were defective, in conjunction with the time necessary to repeat the discharge tests and rechrge the battery, was such that the lighting unit could not be returned to an operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

E. ANALYSIS OF EVENT The battery-powered emergency lighting units are designed to provide illumination for certain areas and/or pieces of equipment in the event of a fire concurrent with a loss of Offsite Power (LOSP). During a LOSP, the automatic load shedding function of the emergency diesel generators will disconnect )ower to various areas of normal plant lighting, thereby triggering tie emergency lights. Lighting units 2R24-E104 and 2R42-E039 are used to illuminate Motor Control Center 2R24-5022 and the Diesel Building access areas, respectively.

In the event that the normal building lights for the affected areas are extinguished and the emergency lighting units fail to operate, plant operators can use flashlights fo- any required emergency operations.

Procedure 3400-0PS-030-2S, "INSIDE OAILY ROUNDS," required plant operators to carry flashlights with them during their daily rounds. Also, flashlights are available continually in the Maintenance Tool Storage Area for use during emergencies.

Based on the above analysis, it is concluded that this event had no adverse impact on nuclear safety.

F. -CORRECTIVE AC U ONS

1. The battery-powered emergency lighting unit 2R42-E039 was demonstrated operable by performing an 8-hour battery discharge test.in accordance with FHA-Appendix B, Section 2.9.1.b. Lighting unit 2R42-E104 had been demonstrated operable during its scheduled surveillance on 1/6/92.

HL-2247 003531- E-3

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ENCLOSURE (Continued)

SPECIAL REPOR1 2-92-003 HISSED SURVEILLANCE AND INOPERABILITY OF BATTERY POWERED EMERGENCY LIGHTING UNITS RESULT IN A SPECIAL REPORT AS REQM1 RED BY THE FIRE HA;ARD ANALYSIS

2. Since the missed annual surveillance on 2R42-E104, surveillance procedure 42SV-FPX-003-0S has been revised. The current revision includes the specific battery-powered emergency lighting units to be tested during each month. This action should prevent future errors in matching the procedure requirements with the Surveillance Data Base as both now reference the specific lights to be tested each month.

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