05000255/LER-1979-017-03, /03L-0 on 790404:while Taking Battery Voltage Readings,Two Cells in Station Battery 2 Burst Due to Explosion of Hydrogen Inside Cells.Battery Taken Out of Svc. Two Replacement Cells Ordered

/03L-0 on 790404:while Taking Battery Voltage Readings,Two Cells in Station Battery 2 Burst Due to Explosion of Hydrogen Inside Cells.Battery Taken Out of Svc. Two Replacement Cells Ordered

ML18043A652
Person / Time
Site:	Palisades
Issue date:	04/04/1979
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML18043A651	List: 05000255/LER-1979-017, Forwards LER 79-017/03L-0 05000255/LER-1979-017-03, /03L-0 on 790404:while Taking Battery Voltage Readings,Two Cells in Station Battery 2 Burst Due to Explosion of Hydrogen Inside Cells.Battery Taken Out of Svc. Two Replacement Cells Ordered
References
LER-79-017-03L, LER-79-17-3L, NUDOCS 7905080539
Download: ML18043A652 (2)

LER-1979-017, /03L-0 on 790404:while Taking Battery Voltage Readings,Two Cells in Station Battery 2 Burst Due to Explosion of Hydrogen Inside Cells.Battery Taken Out of Svc. Two Replacement Cells Ordered

Event date:
Report date:
2551979017R03 - NRC Website

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lf.:.r James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -

LER 79-017 On the reverse side is LER 79-017 which is reportable under Technical Specification 6.9.2.0.2.

David P Hoffman Assistant Nuclear Licensing Administrator CC Director, Office-of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement

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Palisades NRC FORM366 11-nl U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK: I 10 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) I 6 [IT!] IM I IIP IA I Lil 1010 I 01 -I Cl 010 I 01 01-1010101411 11111 1101 I 10 7 8 9 L.ICENSEE CODE 14 ,5 L.ICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT SS CON'T !IE] 7 8 ~~~~~~ ~10151010I012 p 15 GI 014101417 I 91G)I 01 51014 171910 60 61 DOCKET NUMBER 68 69 EVENT CATE 74 75 REPORT CATE 60 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@ ((I)) I While taking battery voltage readings during an equalizing battery charge,1 ())2J two cells in No. 2 station battery burst as a result of the ex~losion o~ []JI] hydrogen inside the cells. The battery was subsequently taken out of [QI[] service to permit jumpering of the defective cells. Both battery chargers! [§))] for battery bus No. 2 were in operation as reauired by TS 3,7.2.4. This [£J1J I event is reportable per TS 6.9.2.b.2. Battery voltage and capacity with ()))) I two jumpered cells is within specifications. 8 9 (Gould batt. Type FPS 17). I [IITJ 7 8 SYSTEM

CAUSE

CAUSE COMP. CODE CODE SUBCOOE COMPONENT COOE SUBCODE jE I Cl@ L!J@ 12.J@ jB I AIT I TjR l!J@ ~@ 9 10 11 12 13 18 19 SEQUENTIAL. OCCURRENCE REPORT REPORT NO. CODE TYPE VALVE SUBCOOE ~@ 20 ~ LERIRO CVENTYEAR ~ REPORT j7 I 9 I NUMBER 21 22 I l I o I 11 7 I I/ I Io I 3 I I LI l=J 23 24 26 27 2S 29 30 31 ACTION FUTURE EFi'ECT SHUTDOWN ~ ATTACHMENT NPRO-i PRIME COMP. TAKEN ACTION ON PL.ANT METHOD HOURS ~ SUBMITTED FORM ~us, SUPPLIER L.!J@W@ UJ@ UJ I 01 o I 010 I lli.J@ lli.J@> LU@ 33 34 35 36 37 40 41 42 43 CAUSE DESCRIPTION AND COAREC"rlVE ACTIONS @ REVISION NO. ~ 32 COMPONENT MANUFACTURER 80 I G 11 18 15 ' 44 47 [II§] I A test lead being used to take the voltage readings fell and struck a batt4ry DJJJ connector, causing a spark which ignited the hydrogen. To prevent recurreqce, CiID I the location where readings are taken will be changed. Additionally, O:::W I explosion-proof vent caps if available, will be procured and installed on o::IIJ I the station battery cells. Two replacement cells have been ordered. J 7 8 9 FACILITY f3Q\\ STATUS % POWER OTHeR STATUS '.:::::; [ill] I El@ 11 I 0 I 0 ll'---'N /"-A ___ 80 METHOD OF A DISCOVERY DISCOVERY DESCRIPTION L!.J(g)~l~O~p_e_r_a_t_o_r~o_b_s_e_r_v_a_t_i_*o_n~~~~~~~-' 8 9 10 12 13 44 A~~TY =ITT~ ~ REL.EASED OF P.ELEASE I AMOUNT OF ACTIVITY [IE] ~@ W@I N A l 7 8 9 10 11 44 4S 46 80 I N/A LOCATION OF REL.EASE @ 45 80 PERSONNEL EXPOSURES r.;::;.._ oiu'6BER O ~ r2'.E r.;;;., CESCRl'NI~~ ITJ2] I I I k~L.::J~~- 1_ 1_ 8 9 11 12 13 60 PERSONNEL. INJURIES ~ eu~El) CESCW7'KN~ ~ I I I(§)'------------------------------------------------------' 7 8 9 11 12 80 L.OSS O~ OR DAMAGE TO FACIL.ITY l4J'. TYPE

DESCRIPTION

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