ML20058L551
| ML20058L551 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 11/30/1977 |
| From: | Mayer L, Tilly D NORTHERN STATES POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| LER-LER-771130, NUDOCS 9105230322 | |
| Download: ML20058L551 (2) | |
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Mr J G Keppler, Director, Region III d')j-k Office of Inspection & Enforcement U S Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 i
Dear Mr Keppler:
10NTICELLO NUCLEAR GENERATING PLANT Docket No. 263 License No. DPR-22 Loss of 4 KV Safeguards Bus j
Automatic Transfer Capability i
The Licensee Event Report for this occurrence is reproduced on the back of this letter. Enclosed are 3 copies.
l Yours very truly,
.1 L 0 Mayer, PE Manager of Nuclear Support Services IBM /MIV/ak cc: Director, IE, USNRC (30)
Director, MIPC, USNRC (3) i i
G Charnoff MPCA Attn: J W Ferran 1977 Dno~
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9105230322 771130 CF ADOCK 05000263
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' E 57 56 SB SO Ei EVENT DESCAOTCN surveillance test. the auto:Catic transfer j
@ l Durine esercenev diesel genere '
BC Transfer circuitry for Bas #16 l 7 E&
tid not function.
M l circuitrv for emergenev Bas #15 gg Teiled due to blown control fuses caused by l
7 85 b I overable. No previous occurrenres.
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Khert re-eved end fuses renlaced.
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CAUSE DESOQiPTION lDurine instellstion of new LBov loed center, wires were incorrectiv Isnded on 80 018 7 es l
$ l re--inels supolvine esercenev Bus 15 autccatic rransfer circuitry, resulting in sa L' ires relanded on spare ter::inals and fuses
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7 es 8 Ishort eircuit throach the fuses.
BD 7 89 vtTw00 or D500VEDY DE5 Carton sare.nv ET A*.:S
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1D 11 PERSONNEL EXPOSUAES NJvste t v pf ots:metoN 1
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n BD 7 E5 11 iE 13 PEPSONNEL INJURIES l
NJuef s CEstar'os 1 64 \\o 1 ol ol l n
b; 7 69 Si 12 OrFSi E CONSEGUENtES I
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NA so 7 es LOSS DA DAMAGE TO FAOUTY e v et orscarveN I
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7 65 ADDiiCNAL FACTCAS
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l 3 I(Ceuse Description Continuedi replaced.
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612/295-5151 D D Iill?
NONE __
NAVE.
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