ML20058K621
| ML20058K621 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 02/09/1977 |
| From: | Mayer L, Nevinski D NORTHERN STATES POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 017033, 17033, LER-LER-770209, NUDOCS 9102120679 | |
| Download: ML20058K621 (2) | |
Text
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t bcENSEE EVENT REPORT 1
CourRot stocet Al i ! 71013Gl c,tuu,.=T,,u
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LCENSEE NawE LCENSE NUMBER N
E lo ! w i Mi si Pl il lo I o !-l of of ol 0101-1 ol 01 I cl il il 11 il E
T PE lolil 7 89 14 15 25 26 30 31 32 i
Thf S hE CATEGORv DOCaET NuuBEA EbENT CATE REPORT CATE c i coni l I I L1] Lt._J 101 s i 01-1 o f 21 613 I 1011121 7: 71 vi 1o 121o 19 I 7l 7I 7 6 7
SS 59 60 61 68 69 74 75 60 TwEAT DESCRIPTON h
DimTNG P POWER OPERATION Cr b- -
- T, W. NO. 3 TIP BALL VALVE FAILED TO l
7 8 fl h I r-' ner m'r+= r em-+m ner b0 l
er, ur - Tt* eye-rw rre mi._-
cur #r nevr errr m r mAve 1
7 89 h l VALVE INVESTIGATION REVEALED NOTHING:
60 I
VALVE WAS TAPPED AND IT CLCSED. VALVE WAS l
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7-8S h } REPLACED WITH LATEST MODEL WHICH HAS AN IMPROVED OPERATOR.
ba 7 89 T r n N. Tin __ C-CC.R-j h
gg i mees.
e : - :u -
m 60 7 89 I
CC$f couPONENT CoCE le lo I LIJ lviiltIVIvivi L:d IG 10 le lo I Lx) c R
vaamN I
7 89 10 11 12 17 43 44 47 ce CAUSE DESCRIPTON t
bl CAUSE U'! DETERMINED.
t VALVE WAS DISASSEMBLED INSPECTED AND ForND IN GO 7 89 hl VALVE MANUFACTURED FOR GE COMPANY BY CENERAL PNEUMATICS (C bJ i
4 6054*0J06),
j 7 89 I
80 J
saca.frv Meta 00 OF STATUS
% POWER CTME A ST AT1.;S D$0CvE Rv D.
' O.'ER' CESCA*f.GN 1 0l0l I NA l h l NA I
7 8 9
10 12 13 44 45 46 ACTV!TY CONTENT 60 FELEasto OF EELEASE AuouNT OF ACTurry l_Ej
[E.,j l NA I
I NA LOCAfoN of EtLEASE I
7 8 9
10 11 I
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44 45 PERSCNNEL EXPOSURES 60 f
NUMBER TYPE DESCR#TCN l
l' d ol el Lgj l MA 1
l 7 89 11 12 13 i
PERSONNEL INJURIES bO I
NUMBER CE5CAPTCN l
E Lo l ol oi i NA i
l 7 89 11 12 l
OFFSITE CONSEQUENCES 60 i
hl I
N s.
GB l
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7 LCSS CR CAMAGE TO FACIUTY 60 TYP DESCAFTON l
h [E l NA l
7 ea 10 l
PUBUCUY eo hl NA 7 89 l
eo ADD! TONAL FACTORS DG l Na-I i
7 89 60
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83 usuE -
D. E. N-vinskt maNt: 6H m s-5151 A
410P120679 770209 E' '. M *. L...
CF ADDCK 05000263
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t HS9 NORTHERN STATES POWER COMPANY u N N E A PO Lt S. MIN N E S OTA 88401 I
February 9, 1977
/
Mr J G Keppler, Director, Region III Office of Inspection & Enforcement j
U S Nuclear Regulatory Cor:xnission 799 Roosevelt Road clen Ellyn, IL 60137
Dear Mr Keppler:
i a
MONTICELLO NUCLEAR GENEPATING PIANT Docket No. 50-263 License No. DPR-22 No. 3 Tip Ball valve Faiiure To Close The Lice..see Event Report for this ocrurrence is reproduced on the back of this letter.
Enclosed ar 3 copies.
Yours very truly, 0
L 0 Mayer, PE Manager of Nuclear Support Services LOM/MHV/deh ec: Director, IE, USNRC (40)
Director, MIPC, USNRC (3)
(
G Charnoff MPCA At to: J W Ferman
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