HL-1891, Special Rept 2-91-003:on 911003,during Performance of Battery Discharge Test,Two Emergency Lighting Units Failed to Illuminate for 8 H & Could Not Be Restored within 72 H. Lighting Units Repaired & Discharge Test Performed

Special Rept 2-91-003:on 911003,during Performance of Battery Discharge Test,Two Emergency Lighting Units Failed to Illuminate for 8 H & Could Not Be Restored within 72 H. Lighting Units Repaired & Discharge Test Performed

ML20079K902
Person / Time
Site:	Hatch
Issue date:	10/31/1991
From:	Beckham J GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
2-91-003, 2-91-3, HL-1891, NUDOCS 9111050230
Download: ML20079K902 (4)

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HL-1891 002398 October 31, 1991 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 PLAhT HATCH - UNIT 2 NkC DOCKET 50-366 OPERATING LICENSE NPF-5 SPECIAL REPORT 2-91-003 BATTERY POWERED EMERGENCY LIGHTING UNITS IN0PERAB1LFL4 PERIOD GREATER THAN 72 HOURS Gentlemen:

In accordance with Plant }latui Unit 2 Technical Specifications section 6.9.? and Appendix B of the Fire Hazards Analysis, Georgia Power Company is submitting the enclosed Special Report concerning battery powered emergency lighting units whi-h were inoperable for a period greater than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

Sincerely, h h'Y j

j?.T.Beckham,JrJ J

DCVlcr i

Enclosure:

Specit,1 Report 2-91-003 r

L ce; Gutgj's Power Corrnany Mr H im Sumncr, General Manager - Nuclear Plant Mr. J, D. Heidt, Manager Engineering and Licensing - Hatch N0'Oi!

IJ.S. Nuclear Reaulatory Commission. Washinaton. D.C.

Mr. K. Jabbour, Licensing Project Manager - Hatch U.S. Nucl_ea.r Reaulatory Commission. Reaion 11 Mr. S. D. Ebneter, Regional Administrator Mr. L. D. Wert, Senior Resident Inspector - Hatch 9111050230 9:2031 PDR ~

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• r ENCLOSURE PLANT HATCH - UNIT 2 NRC DOCKET 50-366 OPERATING LICENSE NPF-5 SPECIAL REPORT 2-91-003 BATTERY POWLRED EMERGENCY LIGHTING UNilS I IN0PERABLE FOR A PERIOD GREATER THAN 72 HOURS 1

A. REQUIREMENT FOR REPORT This report is required by Unit 2 Technical Specifications section 6.9.2.

This section of the Technical Specifications states that Special Reports for fire protection equipment operating and surveillance requirements shall be

- submitted as required-by the Fire Hazards Analysis (FHA) and its Appendix D requirements.

Appendix B, section 1.9.1 of the FHA states that emergency lighting  !

equipment must be operable at all times. The Action Statement states that ,

in the event a battery powcred 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 prepared and submitted to  ;

the Commission within 30 days. In the event described in this report, two battery powered emergency lighting units were inoperable for greater than 72 1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.- '

B. UNIT STATUS AT TIME OF EVENT On 10/06/91, Unit 2 was in the Run mode at a power level of 2436 CMWT (100 percent rated thermal power).

C. OLSCRIPTION OF EVENT On 10/03/91, non-licensed maintenance personnel were performing surveillance procedure 42SV-FPX-003-0S, " Emergency Lighting Surveillance." This involved '

an inspection of the physical condition of indicating lamps, electrolyte level, etc., as well as an 8-hour. battery discharge test which is performed on one-third of the lighting units every 120 days, such that all the lights are tested at'least once per year. The inspection is required by the Fire Hazards Analysis, Apoendix B, sectica 2.9.1.a. The 8-hour battery discharge test.is required by the Fire Hazards Analysis, Appendix B, section 2.9.1.b.

During performance of the battery discharge test, two of the emergency lighting units, 2R42-E015 and -E057, failed to illuminate for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> as required. Deficiency Cards (DCs) 2-91-4046 and -4047 were written to document tha failure of the subject lights and initiate corrective' actions.

Limiting Condition for Operation (LCO) 2-91-643 was initiated on 10/03/91, at 1530 CDT, by licensed Operations personnel to track corrective actions and to ensure compliance with the FHA. However, for reasons given later in L

002398 HL-1891 E-1

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l ENCLOSURE (Continued)

SPECIAL REPORT 2-91-003  !

BATTERY POWERED EMERGENCY LIGHTING UNITS itl0PERABLE FOR A PERIOD GREATER THAN 72 HOURS  !

I this report, the affected lighting units could not be restored to their i operable status within the 72-hour period allowed by the FHA, Appendix B, I section 1.9.1. DC 2-91-4082 was written to document the fact that the two '

emergency lighting units 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 />. l Nonconformances and corrective actions are tabulated below: j 1

1

[TCHT AREA DATE DATE DEFTCTENT CORRECTIVE i NUMBER SERVED FAILED RESTORED CONDITION ACIION  ;

i 2R42-E015 Turbine Bldg., 10/3/91 10/7/91 Failed 8-hour Replaced battery 164' elevation, battery dschg. per MWO 2-91-4035 Northeast hallway test 2R42-E057 Reactor Bldg., 10/3/91 10/7/91 Failed 8-hour Tightened loose 130' elevation, battery dschg. connections on  ;

West stairway arca test battery terminals per MWO 2-91-4034 Following completion of repairs on the failed lighting units and the satisfactory completion of testing per procedure 42SV-FPA-003-OS, they were restored to operable sta.us by 10/07/91, ai 1230 COT, and LC0 2-91-643-was terminated at that tin < .

D. CAUSE OF EVENT in this event, efforts were made to repair and restore 'he affected lights to an operable status within the required 72-hour period. The documentation necessary to correct these deficiencies- was walked-through by personnel involved in order to expedite the work. However, due to the time involved in effecting repairs (i.e., 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for e rging of batt.e.y units, 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> for ccnducting a battery discharge test :4 hours for recharging and some amount of time required for parts checkot. and repair), the subject lights could not be restored within the required 72-hour period.

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ENCLOSURE (Continued)

SPECIAL REPORT 2-91-003 BATTERY POWERED EMERGENCY LIGHTING UNITS IN0PERABLEl 0R A PERIOD GREATER THAN 72 HOURS

f. ANALYSIS OF EVENT The battery powered emergency lighting units are designed to provide illumination for certain pieces of equipment in the event of a fire concurrent with a loss Of Offsite Power (LOSP). During an LOSP, the automatic load shedding function of the emergency diesel generators will disconnect power to various areas of normal plant lighting, thereby triggering the emergency lights. The t %1ation above shows the affected areas that the battery powered emergency lighting units were intended to illuminate.

In the event .that the normal building lights for the affected 4.reas are extinguished- and the emergency lightino units fail to operate, plaat

. operators can use flashlights for. any required emergency operations.

Proc iure 34GO-0PS-030-25, "INSIDE DAILY ROUNDS," requires plant operators to carry flashlights with them during their daily rounds. Also, flashlights are available contfaually 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 ACTIONS The affected battery powered emergency lighting units were repaired under MW0s 2-91-4034 and -4035. These lights were verified operable by performing sn 8-hour 'ary discharge test in accordance with the requirements of the FHA Appendix section 2.9.1.b.

l-002398 HL-189: E-3

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