ML19261F263

LER 78-003/03L-0:on 780112,emergency Diesel Generator 1B Failed to Start on Simulated Test Signal During Procedure SP1305-5.2.Caused by Drifting Oil Pressure Limit Switch. Setting Adjusted,New Limit Switch Ordered

ML19261F263
Person / Time
Site:	Three Mile Island
Issue date:	02/03/1978
From:	Herbein J METROPOLITAN EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19261F262	List: ML19261F261 ML19261F263
References
LER-78-003-03L, LER-78-3-3L, NUDOCS 7910250702
Download: ML19261F263 (2)

Text

NRC 8,ORM 066 _

U ^ NUCLEAR REGULATORY COMMISSION

. .CENSEE EVENT REPORT CO,NTACL BLOCK: l l l l l l l (PLEASE PRINT OR TYPE ALL REQUIREO INFORMATIONI i s 7

o li i v1 :I -l yl 8 9 LICENSEE COOE l il@lo lo l 10 LICENSE 14 15 lo lo lo lo I 10 lo l@l hl il il il il@l57 OAI T $4l@

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.c start en a si=ulated auto IS test signal dur-o 2; l Energency Diesel Generater I3 faile g 3 ,

ing the first test of Actuation 3 Test Group i HFI/L?! Lcgic per SF1305-5 2 Sis event is reportable per Technical Specification 6.9 2.3(2). Since redundant scurces

, 3 of offsite power vere available and IG-?la was operable, no threat to the health and safety of the public resulted. Se diesel was successe uily started en a repeat of a 7 g the IS test signal, and en all subsequent tests. Cther events of this nature: Th-13 o a l I 60 7 8 3 SYSTEM CAUSE CALSE COMP. VA LV E CODE CCCE SL8COCE COMPCNENT CODE SUSCOCE SU8C00E 7

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12 I I h h bl h 13 I i 18 lhh 19 20 S E CL E N TI AL OCOURRENCE REPCRT REV'S CN lea no EVENT YEA R RE' ORT NO. COCE TYPE Ns.

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-1 27 In l, I 28 23 Ld 30 1-1 31 Ld 32 ACTION sVTumE EPPECT SHUTOCWN ATTACHMENT N P R O-4 PRIVE COMP. COMPCNENT TAKEN ACTION ON PLANT METHOO HOURS SL8MITTED PORMb68. SUPPL;ER MANUPACTURER l33E lgl34D lg ]35Z [g gg 36 3l1 0lol0 ol 40

[jrJ 41 g hlg 42 W g l , lc lg b lg 43 44 47 CAUSE OESCRIPTION AND CCARECTIVE ACTICNS h i o l The oil pressure linit switch foPLSI cressr-- s.& M*+.a e, ~ nn a +. -- o ,7 i

, , which cause:i the diesel to trin. Se settir e <.,3 ,~,.,..a to 3 esieto trovo+ e.-.... l occu.rrences of this type until a replacement CFLS is received. Sressure rance: 1 ei 25 psi; Pressure Diff.: 2 to lo psi; Senser type: 3elleys, gaterta- ?hesther 3ren:-J

, ,  ; Elect. Svitch: 15A 1125 VAC 60 h:: and 0.5A 2125 VOC; Cat. :Ic. 21A13LO253-3. I 7 3 3 80 P ACILITV ME*HCDCP ST UVS  % PCWER OTHER STATUS OtSCOVERY CISCOVERY OESCRIPTICN 1 0 7

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ACTIVITY CONTENT RELEASED OPRELEASE AMOUNT QP ACTivlTV LOCATION CP RELEASE 1 6 l we l l  ?IA l 7 8 9 to 11 44 45 30 PER$0NNEL EXPCSLRES NUM8ER TYPE O E SC RIPTION i 7 1010101@l l@l n . .m. 07G I (I J B0 7 8 9 11 PlascNNE L .N;LRi ts 12 13

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NUV9ER OESCRIPTICN 1 3 I Cl Cl Cth M i 7 8 9 11 12 30 LOSS CP CR O AM AGE TO PACILITY TV'E O E SC *l**1C N I

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NAME OF PREPARER

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