ML20058K595

Ler:On 770627,discovered Air Ejector Radiation Monitors Inoperable Following Startup After Outage

ML20058K595
Person / Time
Site:	Monticello
Issue date:	07/11/1977
From:	Jacobson R, Mayer L NORTHERN STATES POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-LER-770711, NUDOCS 9102120572
Download: ML20058K595 (2)

Text

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LICENSEE EVENT REPORT CONTROL GLOCK:l l

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[PLEASE PRINT ALL RE90tRED INFORMATION) 1 6

AME LCENSE NUMBEA T

I Ml Nl Ml Nl Pl 1l l 0 l 0 l-l 0l 0l 0l 0l 0 l-l 0 l 0J [4l1 l1l1l1l l0l1l O

7 89 14 15 25 26 30 31 32 CATEGOAY T

DOCaET NUMBEA EVENT DATE AEPOAT CATE 0 9 CONT I I

I LTJ LlJ 1015101-1012 le is i 1016 l 21717171 1 017 11 11 171 T l 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION i

Eg l DURING PLAVT STAR 7UP, TE AIR EJECTOR SAMPLE MONITORING SYSIB1 EXPERIENCED kIR I

7 89 80

@ l IN-LEAKAGE CAUSED BY A. VALVE BEING OPEN hBICH IS NORMALLY CLOSED.

BIIS CAUSED IUTH l

7 89 80

@ l ATR ETF(TOR MOVTTORR TO TNnTPATP Tf%'UR THAN NORMAI VAiVC h'AS CTND A'3 SVCTEM i

7 89 80 BE I RFIURNED TO NORSRL. NOT A REPETITIVE OCCURRENCE. St-RO-77-14) l 7 39 80 8I I

7 89 m

80

'cYoE CocE COMPONENT COLE

$JPPLER MA R

VOLA?ON 8 IM Ic I LD_]

1 VI Al Ll 11 11 X l i Nl l GIO 18 10 I

[YJ 7 89 10 11 12 17 43 44 47 48_

CAUSE DESCRIPTION

@ DPROPERLY TAGGEDVALVE APPARENT [Y CAUSEDOPERATOR DtTRINGSTARTUPPR0r l

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@ l WRONG VALVE. VALVE TAGGING ON ALL OFF-GAS SAMPLE SYSTEM VALVES TO BE R l

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80 1

7 89 iCHECKED.

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% POWER CTHER STATUS D SCO ERY OfSCLVEPY OESCAIDTON l

LcJ 1014101 I NA I

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C0sTa0t Room OPERATOR I

7 8 9

10 12 13 44 45 46 60 ACTMT Y CONTENT AELIEAS DI l CF RELEASELij l n l

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AMOUNT OF ACTiv!Tv LOCATON OF AELEASE 55 7 3 9

10 11 44 45 PEMONNEL EXPOSUAES 80 h uMBE A TYDE DESCAIPTON 8 Lo10101 LZ_J l NA r

_J 7 89 11 12 13 80 PERSONNEL INJUAtES NUVBER DESCAFTION DE 1010101 I NA l

7 89 11 12 80 OFFSITE CCNSEQUENCES 52 1 NA 8*

I eO gSS OR {Agg TO FACILITY 811J l NA l

7 89 10 PUBLICITY

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60 9102120572 770711 nOOmONAL FACTORS CF ADOCK 05000263 DG l NA CF 7 89 ~

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NAME: R. D. JACOE M 80

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NSD NORTHERN STATES POWER COMPANY w:NNEAPOUD M I N N E S OTA 58401

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9 July 11, 1977 migutatcql W-Odi1 5 J

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Nr Mr J G Keppler, Director, Region III E

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Dear Mr Keppler:

MONTICELLO NUCLEAR GENERATING PIANT Docket No. 50-263 License No. DPR-22 Air Ejector Radiation Monitors Found Inoperable Following a Startup After an Outage The Licensee Event Report for this occurrence is reproduced on the back of this letter.

Enclosed are three copies.

Yours very truly, L -

1. -i L 0 Mayer, PE Manager of Nuclear Support Services c

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LOM/MHV/deh M

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cc: Director, IE, USNRC (30)

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_].}S Director, MIPC, USNRC (3) g

..Q G Charnoff pg MPCA co r_7 Attn:

J W Terman in ru r.

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