05000298/LER-1979-038-03, /03L-0:on 791130,during Normal Operation, Suppression Chamber Level Instrument PC-LI-12 Failed Downscale.Caused by Failure of Power Supply.Power Supply Replaced & Proper Indication Verified

/03L-0:on 791130,during Normal Operation, Suppression Chamber Level Instrument PC-LI-12 Failed Downscale.Caused by Failure of Power Supply.Power Supply Replaced & Proper Indication Verified

ML19257C589
Person / Time
Site:	Cooper
Issue date:	12/28/1979
From:	Phillips D NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19257C585	List: 05000298/LER-1979-038, Forwards LER 79-038/03L-0 05000298/LER-1979-038-03, /03L-0:on 791130,during Normal Operation, Suppression Chamber Level Instrument PC-LI-12 Failed Downscale.Caused by Failure of Power Supply.Power Supply Replaced & Proper Indication Verified
References
LER-79-038-03L, LER-79-38-3L, NUDOCS 8001290450
Download: ML19257C589 (1)

LER-1979-038, /03L-0:on 791130,during Normal Operation, Suppression Chamber Level Instrument PC-LI-12 Failed Downscale.Caused by Failure of Power Supply.Power Supply Replaced & Proper Indication Verified

Event date:
Report date:
2981979038R03 - NRC Website

text

,

NRC. FORM 366 U. S. NUCLEAR REGULATORY COMMISSION 17 77)

LICENSEE EVENT REPORT CONTROL BLOCK: l l

l l

l l

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATiON)

Io Iil I Nl El Cl Pl Rl 1l@l Ol 0l - l 0 l 0 l 0l 0l -l 0l 0l 0l@l 4 l 1 l 1 l 1_1l@l l

l@

7 d 3 LICENSEE CODE 14 S

LICENSE NuvtlEH 15 26 LICENSE TvrE J0 57 v A T $8 CON'T 91@

Ll@l 0 5l0l0l0l2 9 l 8 l@l 1 11 31 01 71 ol@Lt121 21 8 7

o i

5 d

60 61 DOCAET NUVBER 68 69 EVENT DATE 74 75 REPORT D ATE N

EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h lDuring normal operation, suppression chamber level instrument PC-LI-12 failed down-J o

2

[ scale.

T.S. Table 3.2.F requires all level instruments operable. All other level I o

3 lindicators were indicating properiv. There were no sinnificant occurrences as a I

o a

o s [ result of this event and there were no adverse affects to public health and safetv. I 3

6 frhis event is not recetitive.

I o

l I

als !

I 80 ri

)

SYSTEY

CAUSE

CAeSE COYP VALVE CCCE CODE LL t4CW COYPONENT CODE SL8CCOE SLBCCCE S l Tl Rl Uj@ J@ y @

Qd I lF l@ W@ l E l@ lI N

4 e

It) 6 i IJ v3 in 19

'O LE QL EN TI AL s

a d i

• .t l HEF0HT 4EVISiON

_ENENT'EAA HEPORT NO CCCE TYPE NO

@,%,j, 7l9l l-l l0 l3 8]

l/

l0 31 l Ll l-l d i

'l 24

. t>

2 2 53 29 30 Ji 32 A C D G',

r u T t. a E EE8ECT M fDOAN A TT AC HY E N T NPAD 4 PA:YEcovo COYPONENT u

SLBYtTTED FORM w8 SLPPLIE A VANUFACTUREA Ta*EN SCT:CN ONPlaNT

'/ E TH OD

~OuAS C l@l Z I@

l ZI@

21@

10101010 W@

l INl@

lSI3l313l@

JJ 4

h sh J

4J 4I 42 4j 44 47 CAUSE DESC AiPTION AND CORRECTiv E ACTIONS frhe level indicator failed due to a failure of the oower sucolv The cower semel v isl 1

o 1

1 la model CPS-15 24/28 manufactured bv Standard powe-Tr c n r,n r, r e a. m w.7-c,,7 7

i i

yas replaced and proper indication was verified. The failure of the power supp1v wasl i

i lapparently due to an internal short, which caused the cover sucolv tr msfomer to l

W loverheat and fail.

I

$J e

80

'*DT oTHEn status @

""s'c"OSS H v' ST

.. Powe A OisCovEnv OEsCaiPTioN (E l@ l 0l 9l 3l@l NA l

l A l@l Failure of Indication l

i s

8 cCZTENT AC T, v, Tv AuOuNT 05 ACTmTv @ l itEAsE@

aEtt Aseo Or aELE AsE toc ATioN or lZ l @ (Z_j@l NA l

NA 6

1

")

10 11 44 45 80 PE AirNNE L F m POSLA ES l0 l0 l@l Z l@l A

l i

7 so

' nnscNN[tE ;u'pS s b}ln}y-}II ()

E N

oESCniPTioNh

} f_D n

f'f bH[7 -f!bbi/ll 0 l

w meH l0 l 0 l QJ@l NA i

n i yo ili > >lt O JALE O F ACill T Y 4

'vpE f]E ',Gif tPilGN lZ l@l NA l

i i

1

",'n i d6

.55 /

^

_..P,.,~O,,

-,,ol Nsc uso om NA l

ll lllll l1IIl}

W L3_j @ l

/

a

's 10 08 69 80 3 NAVE OF PAEPARER David PhIll499 PHONE.

402-825-1811

{

O u ' cg qSO