05000259/LER-1981-035-03, Left Bank Starters Would Not Develop Min Rotational Speed During Testing.Caused by Normal Wear,Dirt & Grit in Air Start Sys.Air Start Motor Replaced

Left Bank Starters Would Not Develop Min Rotational Speed During Testing.Caused by Normal Wear,Dirt & Grit in Air Start Sys.Air Start Motor Replaced

ML20009H651
Person / Time
Site:	Browns Ferry
Issue date:	07/31/1981
From:	Holder G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009H645	List: 05000259/LER-1981-035, Forwards Updated LER 81-035/03X-1 05000259/LER-1981-035-03, Left Bank Starters Would Not Develop Min Rotational Speed During Testing.Caused by Normal Wear,Dirt & Grit in Air Start Sys.Air Start Motor Replaced
References
LER-81-035-03X, LER-81-35-3X, NUDOCS 8108100324
Download: ML20009H651 (2)

LER-1981-035, Left Bank Starters Would Not Develop Min Rotational Speed During Testing.Caused by Normal Wear,Dirt & Grit in Air Start Sys.Air Start Motor Replaced

Event date:
Report date:
2591981035R03 - NRC Website

text

_

i I

u. S. NUCLE AR REGULATORY COMMISSION NRC FORM 366 UPDATE REPORT - PREVIOUS REPORT DATE 7/15/ ;l (7 77)

LICENSEE EVENT REPORT j

O 4

CON T ROL BLOCK: l l

l l

l l

l (PLEASE PRINT OR TYPE ALL REQUIRED INFCRMATIONI l

i i

6 l. Al L! Bl Rl F! 1l@l 0 l 0 l -l 0 l 0 l 0 l 0 l 0 l - l 0 l 0 l@l 4 l 1 l 1 l 1 l 1 l@l l

l@

0 i l

at 9 LH't NSEL C1)DI 84 IS UCENSE NUMBER 26 26 LICENSE TYPE JO SJ CAI SS CON'1

$ $ l Lhl 0l S l 0l 0 l 0 l 21 5 l 9 @l 016 l 2 l 0 l 8 l I l@l 0 l 7 I 3 l 1 l 81 1 l@

0 I I

H tw 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 F VE N T DESCRIPTION AND PnOBA3LE CONSEQUENCES h l With unit 1 in refueling outage and units 2 and 3 in steady state, during diesel l

,, 2 g g l generator redundant start test (EMI-3), left bank starters would not develop l

[nl4l l minimum rotational speed. Diesel generator B was removed from service to r7 pair l

l air start motors. (T.S. 3.9.B.2)

Diesel generator B is common to units 1 and 2.

l l

n,,

FITil i There was no danger to the health or safety of the public. Redundant systems were

(

, jol7l l available and operable. Previous events: BFRO-50-259/74004W, 74012W, 74013W,

[

t ioin I i 74021W, 75008W, 81020; 296/81023.

l 1

M 4 SYSTEM

CAUSE

CAUSE COMP-VALVE i

CODE CODE SUBCODE COMPONENT CODE SUBCODE SU8 CODE lOlni I el Elh [Ejh i F l@ l M l 0 l T l 0 l R l X lh J@ @ h i

n 9

in 13 12 13 1H 19 20 SE OtlEN TI AL OCCUH ftl NCE HEPOH T HEVISION f

tVENT YEeH HEPOH1 NO.

CODE TYPE NO h,'j'f R HO l8l1l

(---j l 0l 3l 5l y

l 0l 3l W

[--.]

[,1J gH,T,

_2n 22 23 24 26 27 28 29 30 31 32 TAKER AC TIOf ON PLANT MET HOURS S8 IT D FO B.

$ PL R MA CTURER i

l C l@W@

W@

lZl@

l 0l 4 4 0l Wg lN [g l3L jg l I l 0 l 7 l 5 lg J3 34 35 36 31 40 41 42 4

44 41 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l i l o ] l Normal wear, dirt, and grit in the air otart system. The Ingersoll-Rand model l

i i l D89Ril46 air start motor, size 150 EMP, pressure class 200 psi, pneumatic activation, f j was replaced. Recurrence control: clean and inspect air start motors and actuation l i,

J [il3ll valves semiannually and rebuild all air start motors (new vanes, worn parts, l

t 1

Ii12I I etc.) anrually.

s0 e

a.

si A 411'

% POWE R OTHER S TATUS ISCOV DISCOVERY DESCRIPTION l8 l'*. ] dh l 0 l O l 0 l@l NA l

lBl@l Routine test.

l A fivlTy CO TENT Hn t u.co oF nELee.r AMOUNT OF ACTIVITY L ATION OF RELEASE NA l

l l

l' l6 I b2 j h Whl E

H 1 30 II 44 45 80 PF il",OP4N F L F V P*)$UH(,$

NIUmfH I4 PF DESCRIPTION 9 l i 1 il 1 01 01 OJ@LzJ@l NA l-Bo P.c.,m"IN,u'!,Es oc scii P fioN@

NoverH l 0l 0 l0 l@l NA l

i i

1 9 i1 12 gg i fy4 fjf f HI OAM AGE TO F ACll f TY l'r rt IJE *.CittP f lON NA l

lel3l ] @l [i

sCHiP Tion O NRC USE ONLY 1

.U NA l

lllllllllllll}

I ' I "I L_NjQi)l

,,a 69 se ;

- 9 m

8108100324 810731 Gene Holder (205) 729-6134 o

PH NE:

PDR ADOCK 05000259*HEH S

PDR

i/'

Tonne:: ee Valley Authority Form 1;F 17

)

Mr ntn:i For ry Nuclea 1%nt RF Ifi.2 6/01/81 3'

i 1.F.1: SJ!PI't.F.NCNTAl. IN1't il:M ATIOr:

i ht ilf 50- 259, / 81035 R1 Te, huicat Specific.iti in Inve!ved 3.9.B.2.-.

j i

liep rted ilnder Technical Sp"cificatirin 6.7.2.b(2)

ADate elue tH:C:

N/A Date of Occurrence,6/20/81 Time of Occurrence _, 103,0 Unit 1 and_2__,,__,

Identification and liescript. ion,,9f Oc,currence i

Diesel generator B.was removed.from service to repair lef t bank air start motors.

Centrlitions Prior to Occurrence:

Unit 1 in refueling outage.

l Unit 2 at 76%.

Unit 3 at 77%.

5 Action t.pe ific.I in :h+ Technical Specification Surs edlaner itequirements mes 3

'o inoperabh; eiptipraent,._ Ihperibe. _, _

'. ae Het surveillance requirements of T.S. 4.9.B.2.

i Apparent Cause of Occut'rence-Normal wear, dirt, and grit in the air start motor.

l Analysis c.i (>ccurrenre There was no danger to the health or safety of one public, no release of i-activity, no damage to the plant or equipment,'and no resulting significant chain of events, i

I k

i Corrr clive Ac.t._io. _n :

Replaced the air start motor. Recurrence control: clean and inspect air start motors-and activation valves semiannually and rebuild all air start motors (new vanes, worn parts, etcetera) annually.

Failure I)ata:

BFRO-50-259/74004W, 74012W, 74013W 75008W, 81020; 296/81023.

id - I,if,5g402N-ibilit

- Di, cum n! Control Supervisor Perp$

i lieton t ion :

3

- Q I.

tgf/;[ _. _

"it"vis. ion :