05000346/LER-1980-063-03, /03L-1:on 800823,safety Features Actuation Sys Indication Panel for Damper HV5442 Was Inoperable.Caused by Blown Fuse in Control Circuit.Fuse Replaced & Sys Returned to Svc

/03L-1:on 800823,safety Features Actuation Sys Indication Panel for Damper HV5442 Was Inoperable.Caused by Blown Fuse in Control Circuit.Fuse Replaced & Sys Returned to Svc

ML19338F507
Person / Time
Site:	Davis Besse
Issue date:	09/18/1980
From:	Thompson T TOLEDO EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19338F504	List: 05000346/LER-1980-063, Forwards LER 80-063/03L-1 05000346/LER-1980-063-03, /03L-1:on 800823,safety Features Actuation Sys Indication Panel for Damper HV5442 Was Inoperable.Caused by Blown Fuse in Control Circuit.Fuse Replaced & Sys Returned to Svc
References
LER-80-063-03L, LER-80-63-3L, NUDOCS 8010200439
Download: ML19338F507 (2)

LER-1980-063, /03L-1:on 800823,safety Features Actuation Sys Indication Panel for Damper HV5442 Was Inoperable.Caused by Blown Fuse in Control Circuit.Fuse Replaced & Sys Returned to Svc

Event date:
Report date:
3461980063R03 - NRC Website

text

.

~

' O S. NUCLEAR CEIULAT!RY COMMISSION FORM '366

,%)'

. LICENSEE EVENT REPORT 2

N p.

CONTROLBLOCKi]

- l' l' ~ l l'

l~ ~lh.

(PtEASE PHINT OR TYFE ALi REQUIRED INFOXMATIONI

~3.

6 l20l Hl Dj B! Sl51l@l10l 0l 0l 0l 0l Ql 0l 0] 0l 0l'0l@ 4 l 1l 1l ll 1l@l l-~l@-

o i Y,

8 : tit.

. LICENSEE CODE,

t1 15 c

. LICENSE NUMBEtt -

26 2ts LIChNS E. TYPE J0 57 CAT 88 4

,,,"c[lL gl0 l 5 l0. l-l0 l3 -l4 16. l@l0 I j8' 12 l3 ;l8 l 0 l@l 0 l 9 l'll 81 8 l 0 l@

CON'T O t

'I l 8-60 :

61 DOCK ET NUUSER Gd-69 EVENT CATE 74 75 -

hEPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h thej FoTil l '(NP-33-80-75)' On 8/23/80. at. 0230' hours, the control room operator' discovered that i

o l' indicating-lights on'the' Safety Features Actuation System indication panel for damper l t

o 3

]: HV5442 were out.

The' disconnect switch and supply breaker were checked and attempts -]

J o 4

r3 l 3 p l. to stroke the valve were unsuccessful. HV5442 was. declared inoperable. Being in

'l There was nc l J o ja ; -l Sode 5, the/ station did not enter the action statement of T.S. 3.6.5.1.

- l ' danger to the public orl station personnel. This event is being reported to document I

~

O y n

~l

..IoIsI l a component'fallure.

80 DE *.

CODE- ? S SC E COMPONENT CODE '

EUBC dE S

E lI lB l@. lE l@. W@ l C l K l T l B l R l K l@ y@ J @

o 9 7

8 9

10 It-12 13 18 19 20 SEQUENTIAL OCCURRENCE ~

REPORT REVISION EVENT YEAR HEPOftT NO.

CODE TYPE No..

.@ agg/Ro l.8 I O l '

. 1 101613l ~

M lo 13 I IL I l-l Llj LEn a;

21 22-23 24 26 27 28 29 30 31 32 s

HOURS 22 B IT FOf b S.

SU PL1 MA UFACTURER-TKN -

Tl N

. ON PL l010l0l-l

[ T j g l N g l43z lg l z-l 9 l 9 l 9 lg LXj@LC Jg i.z lg. lz ig' 31 33'.

34 3S

- 36 41.

42 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h -

40-J1g ] The cause was the random' failure of a fuse in the control circuit for HV5442. - Af ter l

dec:aring HV5442' inoperable,- the ' supply breaker was ' opened failing-HV5442 in - the l

~3TT'n I I

y,,,y l. closed position..Under Maintenance Work Order 80-3053, the blown fuse was discovered l g -l and replaced.' ' Af ter closing the supply breaker, indication of damper -position returnell.

1 l, gg ] Damper HV5442 was declared. operable at 1300. hours on 8/25/80.

~

l 80 8

9.

ST S-oTHER STAM is O RY DISCOVERY DESCRIPTION

@ [,,,Hj @...% POWER.l6.l0l0l@l'_NA:

l; l A-l@l Control Room Observation-

- l.

A IVI ty I CO TENT' RELE ASED OP RELEASE

, AMOUNT OF ACTIVITY LOCATION OF RELEASE

_[zj g g glLNA-

.l

'l NA l..

3: s 80 c.7

,B-9 10.

It.

~

44 45 PERSONNEL EXPOSURES TYPE DESCmPTION

-> L1 01, l :NUM ER 0j@l:zl@l

?

NA

.l^

i nRSOid'ima,ES' r NUMRER

~ DESCRIPTION l

le 10 l0 lgl: -._NA-

, a 80

'?

8 9 :-

.., 12 -..

LOSS OF OR DAM AGE T O FACtllTY

TYPE

- DESCHIPTtON.

)

{@l. : NA

~

l.

t 9 f 7 _-

879

',.:.10 g @DESC IIPTION-l ))l-lllj.ll:].]plj o thIS lr-NA Q PARE % E Tim Thompson Srj ;

.G8 69

? ?.s

- Q'S

'. ' to 02 419-259--5000,1 Er.t. ; 252. o DVR 80-138.

PHONE:

m

. ~.

<p..]

y,'

~

D 9*D

• D T

~

'Wc

.W J

i TOLEDO [ EDISON COMPANY'-

< ~ DAVIS-BESSE-NUCLEAR' POWER STATION UNIT ONE.

'd

'. O '

SUPPLEMENTAL"INFORMATION~FOR LER NP-33-80-75

~

, u.

l3l r

e

':i ' <., DATE OF'EVENTi :Augustl 23,;1980o FACILITY:1 Davis-Besse ' Unit 1:

1l.'

IIDEN11FICATION OF-OCCURRENCE: Damper HV5442 Inoperable The; unit;was!in:Modej5withPowerj(MRT).=i0andQu,(_,..

3x

~

iConditions Prior to Oscurrencei" 5

f

,s:

jQgf7 LLoad (Gross:MWe) % 0.

Q( * -,se p '

^ ;9

.g ;,>^ j 7.w Q,

' ylQ:a :36,M L.- :, :2]

-'A j

L

.. 'Kn..

. ~.:ht'<. K 8 x

.. At:0230 hours;ot0Aupst 23f.1980;[thd control:raou ope.ra c

- f Description of Occurrence:

^ tor discovernd.that theitndicatin fif6hE W.igthm safety Neatures Act6atiss uyarem,"

[jdf (SFAS) indicdimif p'ashl :.for dampephf >6 Cyd dcift.f HV54423rovides part of -tdiso?!)O [lf

- lation fori hh 'non1Q.ve'ntilation pipisg. pasing,, through"ECCS Robe--No.::ll5.

Th M ilio-/;j, "

t lat' ion would ;bd'. F :quiredlin'tliesvat of c.t br%akt n"thaE [pi ying:khich57 oui l.RhErlij s7 2 i

^

t

pre. vent; the emergenby vent'ilation 'sydem from siistaining an

adequate.negggpres-Qf sure in the roomP 'A"checklof: the dit.corni>c[rvitch ?hnd ~ supply ; break'er reveale? ncitH i '

JmalLeonditions.ahd attempts toL stioke the va'lve locally'.and f remotely were unsuccess'-

~

, l:

'ful; soEdamper HV5442 was declared inoperable'. :Being inl Mode-5',"the station'did not

'1 enter the action statement @f Technical Specification 3.6.5.1..

The technical-speci-'

.ficaL10s requires two operable emsrgency ventilation systems in Modes 1,~ 2, 3,.and 4.

L

. This event.is' being(reported : to document. a component f ailure'. ;

~

Designation-of Apparent Cause of-' Occurrence: The apparent cause of the occurrence was

,.(

the random fallure of: a' fuse in' the control circuit for HV5442.

1 Analysis of' Occurrence

. There was no danger to the health and safety of-the public or to: station personnel. TheJemergency ventilation system does not'have to be operable in Mode.~5.

e

. After ' declaring H' V5442 inoperable, the supply breaker was opene d

i

..Corrective' Action:

failing HV5442 in. the closed position, whichtis :the required position Lin the event t 1

- an SFASl signal.. Troubleshooting commenced-under Maintenance Work Order 80-3053 on

August 25,11980. :A blownffuse was discovered 11n the control. circuit and was replaced.

~

~

The maintenance vasLeompleted at 104T hours en August 25, 1980. After closing the, i

. supply breaker;Lindication of damper position returned and the damper was cycled

, l:

1sev,eralftimes to" demonstrate operability.' 1 Damper HV5442 was. officially declared 11 :

m Loperableat'-1300 hours on August;25, 1980.:

.' Failure Data: iThere:has been-no other ~ incident where a similar component was declared 4 inoperable;due?to:a. blown (fuses

.,x.

s,

t

• L

" LER980-063

/

~"

A fg-N M-

4. #

bb 4 '

A,'

' 3 ~

3