05000298/LER-1980-030-03, /03L-0:on 800813,during Normal Surveillance Testing of RHR Motor Operated Valves,Rhr Loop B Suppression Pool Cooling Inboard Throttle Valve Would Not Operate.Caused by Failure of Key Between Motor Pinion Gear & Motor Shaft

/03L-0:on 800813,during Normal Surveillance Testing of RHR Motor Operated Valves,Rhr Loop B Suppression Pool Cooling Inboard Throttle Valve Would Not Operate.Caused by Failure of Key Between Motor Pinion Gear & Motor Shaft

ML19338C792
Person / Time
Site:	Cooper
Issue date:	08/21/1980
From:	Doan P NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19338C788	List: 05000298/LER-1980-030, Forwards LER 80-030/03L-0 05000298/LER-1980-030-03, /03L-0:on 800813,during Normal Surveillance Testing of RHR Motor Operated Valves,Rhr Loop B Suppression Pool Cooling Inboard Throttle Valve Would Not Operate.Caused by Failure of Key Between Motor Pinion Gear & Motor Shaft
References
LER-80-030-03L, LER-80-30-3L, NUDOCS 8009050289
Download: ML19338C792 (1)

LER-1980-030, /03L-0:on 800813,during Normal Surveillance Testing of RHR Motor Operated Valves,Rhr Loop B Suppression Pool Cooling Inboard Throttle Valve Would Not Operate.Caused by Failure of Key Between Motor Pinion Gear & Motor Shaft

Event date:
Report date:
2981980030R03 - NRC Website

text

- - _ - _,

.( U)

' NR FdRM 366 U.S. NUCLEAR REGULATORY COM*' CION (7 771 LICENSEE EVENT REPORT CONTROL BLOCK: l l

l l

1 l

l

{PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI i

10 Iil I N l E l C l P l RI 1l@l 01 Ol-10 l0 l 0 l 0 l - 10 l Q0_j@l4 1111l1l11@l.

l@

l 7

d 9 LICENSEE CODE 14 16 LICENSE NUMBEH 26 26 LICENSE TvrE J0 57 G A r 58 CON'T 10111 3$RC l L l@l015 101010121918 l@l 0 l 8 l 1131 8101@l0 l a l 2 I I l A l n l@

7 8

60 61 DOCK ET NUM8ER 68 69 EVENT DATE 14 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h f'oTil During normal surveillance testing of RHR motor onerated valves. RMR-MO-34B. tha RMRl l o 131 l'B" Loop suppression cool cooline inboard threrele un1va unn1A nne nnavnea-Thf= 4e i nno,2klo nel 10141 h repetitive occurrence (ref. T FR 76-14 nna 77-11). The "A" Run Tnnn une "u"

T_eg7 I 10151 kell as both diesel genornenr=_ Tha unarraim univa use nnernblo en

• hoe

• bo iaisi pould be used for LPCI injection and for containment isolation purposes.

RHR-M0-34B1 10l71 failed in the normally closed position. There were no adverse affects to the public l l o is I health and safety.

(RTS 3.5.B) l 7

8 9 do SYSTEM

CAUSE

CAUSE COMP VALVE CODE CODE SUSCODE COMPONENT CODE SU8 CODE SUSCODE I O 1 il I cI rI@. [E_j@ [x_j@ lv I A I L I V l 0 l P l@ [.jkjh l_Z,j h 7

8 9

10 ti It 13 1M 19 10 SE QUE N TI A L OCCU R R F. NCE REPORT H E V8SION LE EVENTvfAR REPORT NO.

CODE TvPE NO.

O,aj=R RO18101

[ _j i 01 31 01 [gj 1013I

[,LJ

[-j 10 1

._21 J2 2J 24 26 27 28 29 30 31 JJ AKEN A T U.

O PL NT ET HOURS S8 6T FOR 8.

$UPPLI MANU,AC URER IAl@ W @

W@

W@

l01010l0I

[_N_j @

l l@

lL l@

lLI2l0IOl@

JJ 34 3b JS 31 40 41 42 43 44 47 CAUSE OESCRIPTION AND CORRECTIVE ACTIONS h 1 i l o ] The operator for the subiect valve is a Limitoroue SMB-4. The failure was caused be-l 1iiil bause the key between the motor einion near and the motor ahnfe fn41aa Th. mnen.

I iil j pnd key were replaced. The key has been returned to Limitorque for analysis. This isI m kn interim report, an updated report will be issued when this analysis is complete, I LL,L4,,,,) I I

r s

'I 80 ST S

'. POWE R OTHER STA TUS ISCO R DISCOVERY DESCRIPTION i > 1 s i Lt.J@ l n i o I ^ 181 m

I Laj@l nna v e n,-

nh a v, 4 n.,

I COLNT ACTiv,Tv W [,,,,_j @ [Zj @l AMOUNT O, ACTivifv @ l LOCAT,0~o,REuASE@

REuAsEo 0,REuAsE Z

NA l

NA I

i et 10 t1 44 45 60 PERSONNEL EXPOSURES NU*/0 E R TYPE

DESCRIPTION

f I'il 10 10 l0 l@l Zlhl NA I

PERSONsu'imV4ES DESCR,f,0N@

Nuc,,E R U.,.L.J l 01 01 Ol@l NA l

r M

11 Il 80

( U: S Of 014 UAVAGE TO F ACILITY TYPE DE scitlP flON t

D to go t LitsP f 4ON re,s jet t@l ir (N

W l

llllllllll [llj et

'J Iu

~~_ _ _,

68 69 80 7.

1 N AVE OF ppt. WD-.,,,,% _,. Paul F. Doan PHONE:

8009050/%