05000260/LER-1981-035-03, /03L-0:on 810708,while Performing Level Switch Testing,Scram Discharge Instrument Vol Tank Level Switch 2-LS-85-45F Failed to Operate.Caused by Inoperable Robertshaw Level Switch Model SL-305-EI-X.Switch Replaced

/03L-0:on 810708,while Performing Level Switch Testing,Scram Discharge Instrument Vol Tank Level Switch 2-LS-85-45F Failed to Operate.Caused by Inoperable Robertshaw Level Switch Model SL-305-EI-X.Switch Replaced

ML20009H568
Person / Time
Site:	Browns Ferry
Issue date:	07/28/1981
From:	Holder G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009H567	List: 05000260/LER-1981-035-03, /03L-0:on 810708,while Performing Level Switch Testing,Scram Discharge Instrument Vol Tank Level Switch 2-LS-85-45F Failed to Operate.Caused by Inoperable Robertshaw Level Switch Model SL-305-EI-X.Switch Replaced
References
LER-81-035-03L-01, LER-81-35-3L-1, NUDOCS 8108100252
Download: ML20009H568 (2)

LER-1981-035, /03L-0:on 810708,while Performing Level Switch Testing,Scram Discharge Instrument Vol Tank Level Switch 2-LS-85-45F Failed to Operate.Caused by Inoperable Robertshaw Level Switch Model SL-305-EI-X.Switch Replaced

Event date:
Report date:
2601981035R03 - NRC Website

text

.

NRC FoH[k"J66,'

U. S. NUCLEAR REGULATG%Y COMMISSION LICENSEE EVENT REPORT P

coNr iOL otoCx: l

]

l l

l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6

@ l ^l Ll Ill Rl Fl 2l@l 0 l 0 l -l 0 l 0 l 0 ] 0 l 0 l - l 0 l 0 l@l4 l1 l1 l1 l1 l@l l

lg i

H

'l LiCLNSEE CODE 14 lb LICENSE NUMBER 25 26 LICENSE TYPE JO 67 CAT 58 coNr

'.'l,(([$ l L @l 0l 5 l 0 l 0 l 0 l 2 l 6 l 0 @l 0 ] 7 l 0 l 8 l 8 l 1 l@l 0 17 12 l 8 l 8 l1 l@

o i 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 1

il LVENI DESCHIPilON AND PHOBABLE CONSEQUENCES h g o j ;.j,l During a maintenance outage, while performing level switch testing SI 4.1. A-8, prior l g g g to startup, the scram discharge instrument volume tank level switch 2-LS-85-45F (SDV l g.g l 'l gallon alarm switch) failed to operate (NRC IE Bulletin 80-14.) The 25-gallon rod l i n l g, I block and all 50-gallon scram switches were available and operable. There was no l

10 f u i [ danger *o the health or safety of the public. Previous similar events: BFRO-50-260/ l l o I i l l 80052, 8L 158.

J l

iolHIl_._

80 DE CODE S BC E COMPONENT CODE SUSCOD'E SU E

lol61 l Il Bl@ W@ W@ lI lN lS lT lR lU [@ l Sl@ ]@

s at 9

to i1 11 13 18 19 20 SE QUEN TI Al.

OCCUR RENCF REPORT REVISION

_.i VE N1 Yi Art HEPORT No.

CODE TYPE No.

@ ll1i H HO IaliI l-l l 01 1 si LcJ l of 31 I LI L-.]

LOJ

,';"',r,

_/8

//

JJ 74 26 27 28 29 30 31 32 K f A ;I ON PL T

T HOURS S8 li FO V8.

SUPPLI MAN FAC DER W Q]Cl@

W@

[Z_J@

l0l0l0l0l W@ -lY l@

y@

l R l 2 l9 l0 l@

.t J J4 J'a 36 37 40 43 42 43 44 47 CAUSE DESCnlPTION AND CORRECTIVE ACTIONS ltloll The Robertshaw level switch model SL-305-EI-X was inoperable. The switch was back l

Lrlushed and f ailed to operate. This is a newiv installed switch. replaced 6/2/81 and I i i I will be repaired or replaced during a future outane.

l i,

i l

i 4

li14 1l I

I a

's 60 1 U

" l'oWI it OIHtR51ATUS DISC V iY DISCOVEHY DESCRIPTION lt l'> l d@ l 0 l 0 l 0 lhl NA l

lBl@l Surveillance testing.

l Ac'nvu v

' S' rLN r i

H5LtAsEO OF HfLE %I AMOUNT OF ACTIVITY LOCATION OF RELEASE l l6l(JJ @ [.L}@l NA l

NA I

nnsnNNa nP,d',u oEstn,.rio~ @

~m.m n rm

' l i l il l ol 0l 01@l Zl@l NA l

..,nsoN d',N A s 80

" ~'

omn.Pno~@

~ou,u n li l l I ol 0l0 l@l NA l

o 00 i tJ:7; f)F Ott DAVAdif IQ F ACill f y l y Pf' DL 54 :FIH8 T ION

,' , [, f j@l NA l

n, 80 Pt JH1 BC1 I Y NRC USE ONLY 1 ;' ut t) 11ESCitiP f TON NA l

lllllllllllllf lId [ !!.}@l s

a

's to 68 69 80 $

(205) 729-6134 o

PHONE.

b 81081002h28$2

(

[DRADOCK 050002so

.O P

F[

Form BF 17 Tennessee Vallev Attthority DF 15.2 Itrowns Fet ry N'uclear Plaint G/04/81 l

LF.R SUPPLEMENTAL INFORMATION j

ii R FitO -50J _2_60_ / 81035, T. clutical Specific.ition involved.NRC 1E_B.ullet.in. 8.0 14 P por 'ed linder Technical St reification NRCB 80-14

• Date due NRC:_Bl6/81..__

1).itr of Orcurrence,7/8/81__

Time of, Occurrence _0245___ Unit L

4 Identifij,atign ang i ese_ription of Occurrence' f

During the performance of SI 4.1.A-8, level switch testing, prior to startup, the scram discharge volume tank level switch 2-LS-85-45F failed to operate.

I i

Conilitions Prior to Occurren._c_e.:

(

Unit 1 in refueling outage.

.[

Unit 2 in maintenar outage.

Unit 3 at 98%.

9 Action specified :. the Technical Specification Surveillance Requirements met.

j

$M' 'o..inonepble 33uipment. ' Desc ribe.

None i

i i

i' Appat nt Cause of Occurrence' Inoperable switch.

0 Analys.is of. (icatrrene.-

There was no danger to the health or-safety of the public, no release or acttvity, no damage to the plant or equipment, and no resulting significant

~

chain ol' events.

~ L:CU $.5l39.bSt.501D Switch will be repaired or replaced during a future outage.

Failure Data:

BFm 3-260/80058, 80052.

Itet entio:p Per' >d I,ifetime; Responsibility - Document Control Supervisor

l e

titevi. ion ;

s e,

n n

~,

e.v