05000298/LER-1980-003-03, /03L-0:on 800111,during Valve Realignment Per Special Procedure 80-1,PC-230MV Was Not Closing Completely. Caused by Improper Assembly of Gear Limit Switch in Limitorque Model SMB00 Operator

From kanterella
(Redirected from ML19294B447)
Jump to navigation Jump to search
/03L-0:on 800111,during Valve Realignment Per Special Procedure 80-1,PC-230MV Was Not Closing Completely. Caused by Improper Assembly of Gear Limit Switch in Limitorque Model SMB00 Operator
ML19294B447
Person / Time
Site: Cooper Entergy icon.png
Issue date: 02/06/1980
From: Scheer J
NEBRASKA PUBLIC POWER DISTRICT
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19294B438 List:
References
LER-80-003-03L, LER-80-3-3L, NUDOCS 8002280400
Download: ML19294B447 (1)


LER-1980-003, /03L-0:on 800111,during Valve Realignment Per Special Procedure 80-1,PC-230MV Was Not Closing Completely. Caused by Improper Assembly of Gear Limit Switch in Limitorque Model SMB00 Operator
Event date:
Report date:
2981980003R03 - NRC Website

text

=

NRC FORM 366 U. S NUCLE AR REGUL ATORY CoMMIS56cN 17 771 LICENSEE EVENT REPORT cc. TROL stoCs l l

l (PLEASE PRINT OR TYPE ALL REoVIRED INFORMATioNI lo li l NI El C' Pl Rl l! @ l 01 0 - ! O l o l O l Ol -l ol OI 0l@l t.1 1 il II il@ - w -

l a.

vw.uEE we a4 s

mNa -

ut8 n

. asa rat n CON'T "C"E l L@ 015101010121 o i A CI O !1 11 li l o l n Ql nl,10 i 61810 l@

o

/

4 z E. N ju E a e

neNr cATE 24 aeaca r ca rt EVENT DESCRIPTION ANo PnCSABLE CG".SECUENCES h

. IDuring valve realign =ent per Special Procedure 80-1, PC-230MV was found to not be 1

oi3 l closing completely.

Section 3.7.D.1 of the Technical Specifications requires that j Ithis valve be operable during operation. The downatream valve PC-245AV, was oper- [

i 4

,!,i lable and was shut during the period of time the valve was not closinc properly.

I

'T_here were no significant occurrences _as a result o f tMs event. and there was no I '"

t

'I' Indve rse affects to publ4-heal th md safer" l

I a la i l l

60 g 3 sv5TEU

CAUSE

CAUSE COYP VALSE COLE CODE SLBCOCE COVPONENT CODE SL8 CODE SUBCODE i S l D I@ l Al@ l C @ lVIAlLlVi 0l Pl @ l A @ W@

4 10 it t/

IJ u<

t) i SE QUE NTI AL UGLH 4 NCE HEFOHT H L V 'SMN

.EVENTrEAR HEPCHTNo CCDE TvPE NO O cy, g a agI 81 ol

- l I of 01 31 Ld 10 1 31 IL I L--J lo l

."'ya; l'

22 21 24

.6

l4

?)

Ju 31 a

AC TI ON suTLAE EFFECT SH v i[M N ATT ACHME NT NPRO 4 PRJ.'F COvP COYPCNENT T AK E fe AC TION ON PL ANT VETMOD woVRS SUBVITTED FOHudVB SL PP LI E R YANUFACTUAEA lAJ@btJ@

lzl@

Izl@

O I oi 01 of LN_J@

l@

l Nl@

l L l 2 l 0 l 0 l@

.*s 34 J5 sh 3 '.

40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lPC-230MV has a Limitorque Model SMB00 operator. During previous maintenance on the i

o I'Iii valve. the geared limit switch assembly came apart and was improperly assembico oy 1

[, ;,1 l the electrician performing the maintenance. The geared limit switch assembly was l

l ' I il l replaced and the valve was operated several times to verify proper operation. The l

l A

electricians were civen additional trainine on the repair of limit switches.

J 90 t

, POWER OTHER ST ATUS ISC VERY DISCOVERY DESCRIPTION LE_J@ l 0 l 9 l 8 l@l NA l

l B l@l Resetting valves for a special proc. l i

5 ACTsw ry C

YENT RELE ASED OF HE LE ASE AMOUNT CF ACTIVITY LOC ATION OF RE LE ASE [3.] @ [J_j@l NA l

l NA l

i 6

8 1 to 11 44 45 gg PE HsONNE L E N POSUR ES NUYHfR TvPE DE SCHIP TION s

l o f o l ol@lz l@l NA l

i i

3 3 11

'2 13 60

  • E RSONNE L 'NJuniES Nt rwf u OESCWPTION 01olol@l NA l

M 11 11 80 l 'tn e if r iqq O AM AGE TO 5 ACILI TY

'4PE

!)E SLil'P TION 11 1 ",l Z l@l NA l

,o 80 LJLN[,8,d!uo,noN@

S0022809'00 N "C "'" * "

NA IIIIllIllI ! ! l ;2

, i L:_1.:

4

~)

Il>

fS 69 HO. i NAVE OF PREPARER Jerrv L.

Scheer 402-825-3811

{

psong.