05000327/LER-1983-055-03, /03L-0:on 830415,bank D Movable Control Assembly Declared Inoperable Due to Failure to Move Rods After Receiving Rod Control Sys Urgent Alarm.Caused by Blown Phase C Ref Voltage Fuse FU-10.Fuse Replaced

From kanterella
(Redirected from ML20023D535)
Jump to navigation Jump to search
/03L-0:on 830415,bank D Movable Control Assembly Declared Inoperable Due to Failure to Move Rods After Receiving Rod Control Sys Urgent Alarm.Caused by Blown Phase C Ref Voltage Fuse FU-10.Fuse Replaced
ML20023D535
Person / Time
Site: Sequoyah 
Issue date: 05/12/1983
From: Harding M, Rogers H
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20023D531 List:
References
LER-83-055-03L, LER-83-55-3L, NUDOCS 8305200581
Download: ML20023D535 (1)


LER-1983-055, /03L-0:on 830415,bank D Movable Control Assembly Declared Inoperable Due to Failure to Move Rods After Receiving Rod Control Sys Urgent Alarm.Caused by Blown Phase C Ref Voltage Fuse FU-10.Fuse Replaced
Event date:
Report date:
3271983055R03 - NRC Website

text

l I

Jl LICENSEE EVENT REPORT i

r.6 -

l l

l l

l

,,, COkTROL BLOCK: l

.h (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI

~

e v.

foTil IT l N l s l N lP l 1 l@l 0 l0 l-l 0 l 0l 0 l 0 l 0 l - l 0 l 0 l@l 4 h l1 l1 l1 l@

l l@

7 8 9 LICENSEE CODE 14 33 LICENSE NUM0ER 25 26 LICENSE TYPE JO 57 car g CON'T lol:l

,Z,' l L l@l 0 l 5 l 0 l 0 l0 13 l2 l *7 l@l0 l4 l 1 l 5 l 8 [ 3 l@l0 l5 l1-l2 l8 l3 l@

l

,I,*

8 6G G4 OOCK.ET NUMDEM 08 69

, EVENT DATE 34 73 REPORT DATE EO

- EVENT DESCRfPT!ON ANO PRODADLE CONSEQUENCES h Ioi2l l With unit 1 in mode 1 (100% Rx power) at 0950 CST on 04/15/83, bank D movable gl control assembly was declared inoperable due to failure to move the rods after l o 14 l l receiving a rod' control system urgent alarm. The unit complied w'ith action state-lo isi [

. ment (b) of LCO 3.1.3.1.

There was no effect upon public health and safety.

I IeI' D ievi i$" occurrences - none.

-** i-l

.?'

10101 1

?-

7..

ss s,

SYsTEu

CAUSE,

CAUSE

COMP.

VALVE CCCE COOF SUSCOCE COu*0NE NT CODE SU8 CODE S

l0$9l b ! B Ih (E_lh l E [h lI lN lS (T lR lU l h ] @ U8CCDE@

7 8

9 to 33 12 33 is 19 20 SEOVENTIAL oCCUnRENCE*

REPORT R Evt310N LER EVENT YE AR R EPOnT NO.

.CCDE TYPE No.

@,agg/Ro I al,1 l-j loIsIsl l

- l IOl3i Lt_J l --I

'l 0l

~

28*

22 23 24 26 27 23 29 30

, 31 J2 T KEf3 ACT f C PLANT 1ET J

HOURS 5 8 17 o FOR t BUS.

$UPPLIE

  • MAN ACTURER l A l@l Z l@

l Zl@

lZl@

l 0 l0 l0 l0 l (N_,j @

lNl@

l L l@

lW 'l1 l2 l0 I, i

JJ J4 35 36 37 40 44 42 43 44 43 CAUSE OESCRIPTION ANO CORRECTIVE ACTIONS h

^

li1o l l rnvestigation indicated the problent to be in the 1BD power supply-cabinet and was 9

l y[

associated with a phase failure in the lift circuit. The 'C' phase reference p.~

l voltage fuse (FU-10) was found to be blown. The fuse was replaced and the movable gl control assembly system was verified operable'at 1140 CST on 04/15/83. No.further.

'$i,.g[

' action is planned.

s. ss 80

's^rTNE osnEn status @

Eis5vS v' h

srowER oisCov Env oEsCniPTinN I t I 5 I l E l@ l 1 l 0 l 0 l@l NA l

l B [gl Operator observation j;

40rivs Tv' Co$rEur 80 AucuNT or ACTivirv h l toCATroN or nEtEAsE h aE b [LEAsto or nELc AsEZ ] h l Z l@l MA l

NA l'

7 8 9 10 11 44 45 OO pen 50fiNEL EXPOSURES NUM8ER -

TYPE Ot1CRIPTION 33 ITTil l 01010 l@Lz_J@l NA

'A * *,EkscwE L.mu'n,Es oE sCni,Tio~@

auu.E.

E 10l010l@l NA I

7 ea

,2

.a LOSS oF CR OAMAGE TO FACILITY

@ l TYPE _z_J@l

DESCRIPTION

NA l

T 8305200581 830512 05000327 NRC USE ONL v E PDR ADOCK S

PDR l

lllllllllllll~

8

= -

so se es

.,........%.y

.Name of Preparer:

H. R. Rogers

/M.'R.' Harding Phone: (615) 870-6422

-;-v.8Chp.;