ML19242C502: Difference between revisions
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{{#Wiki_filter:_ _ | {{#Wiki_filter:_ _ | ||
S Mr. ..yi. H. Gr ie r , Directu ' | S Mr. ..yi. H. Gr ie r , Directu ' | ||
'-79-34/3L Mr. .4 o pe t t i ...n b Enforse ,;nt, s eq i r ., | '-79-34/3L Mr. .4 o pe t t i ...n b Enforse ,;nt, s eq i r ., | ||
| Line 23: | Line 22: | ||
; | ; | ||
931 Nrk , e we nm | 931 Nrk , e we nm | ||
* Pru.34a, P I ). d l | * Pru.34a, P I ). d l Oc .c "r. Oricr: | ||
Oc .c "r. Oricr: | |||
This L.E.R. refers to MD 2-14-26A Core Spray Ten Loop Isolation valve failing in mid-position. Applicable Tech. S pe c s . | This L.E.R. refers to MD 2-14-26A Core Spray Ten Loop Isolation valve failing in mid-position. Applicable Tech. S pe c s . | ||
are 3. 5.F.1 and 3.5. A.2. | are 3. 5.F.1 and 3.5. A.2. | ||
U S NUCLE AR REGUt A Trav FY 'S.M LICENSEE EVENT REPORT at:c l l ' ! ! | |||
U S NUCLE AR REGUt A Trav FY 'S.M LICENSEE EVENT REPORT | |||
at:c l l ' ! ! | |||
:h i Pt.E aSE P A' N T C 9 f v 'E A L L A E OL' a E O M ^ n"19 ]N | :h i Pt.E aSE P A' N T C 9 f v 'E A L L A E OL' a E O M ^ n"19 ]N | ||
'a d | 'a d p-i c. -a le l l2 ,L, C ~ 'C i' '',' | ||
p-i c. -a | |||
le l l2 ,L, C ~ 'C i' '',' | |||
!' ' ' !' 'I I'! ' | !' ' ' !' 'I I'! ' | ||
'!T' I f,Jj CO . | '!T' I f,Jj CO . | ||
| Line 45: | Line 34: | ||
[.1 s | [.1 s | ||
i e r . -s <:u,e. c i i _Following a successful surveillance flow test, the core spray loop A twsC m | i e r . -s <:u,e. c i i _Following a successful surveillance flow test, the core spray loop A twsC m | ||
L_ , . i test valve SO2-14-26A failed to fully close. At same tiwe E-4 die sel seas r- -' out of service for governor modification. Core spray loop A was declared ri, La _ inoperable and an orderly shutdown initiated in accord with tech. spec. | L_ , . i test valve SO2-14-26A failed to fully close. At same tiwe E-4 die sel seas r- -' out of service for governor modification. Core spray loop A was declared ri, La _ inoperable and an orderly shutdown initiated in accord with tech. spec. | ||
I~t. j ; 3.5.F.2. Diesel was made operable in about 2 hrs. and plant was returned _ . _ _ | I~t. j ; 3.5.F.2. Diesel was made operable in about 2 hrs. and plant was returned _ . _ _ | ||
c -- . to full power as permitted by tech spec. 3.3. A.2. Unit was shutdown for | c -- . to full power as permitted by tech spec. 3.3. A.2. Unit was shutdown for L _c u. t _ i.. valve repair on 7-6-79 z n > a C | ||
L _c u. t _ i.. valve repair on 7-6-79 | |||
z n > a C | |||
O] S!F!O (__E' h (_B__j h ! V ! Al V V! EI XiO W[ 1 | O] S!F!O (__E' h (_B__j h ! V ! Al V V! EI XiO W[ 1 | ||
,_ 4 | ,_ 4 | ||
/ | / | ||
; - | ; - | ||
!7i 9l l-; | !7i 9l l-; | ||
- f0 !3 l4 | - f0 !3 l4 l- -I l013' - | ||
l- -I l013' - | |||
LLi l- O' 6 *' | LLi l- O' 6 *' | ||
% , t | % , t 1 M .AJ[ J[ ! 01 O! 6l 41 f[ g g[ wI 0'3'O | ||
1 M .AJ[ J[ ! 01 O! 6l 41 | |||
f[ g g[ wI 0'3'O | |||
~ - | ~ - | ||
r. | r. | ||
~ " - | ~ " - | ||
Valve seat ring was found backed '5ut and distorted. Excessive vibration | Valve seat ring was found backed '5ut and distorted. Excessive vibration t .t suspected due to broken pipe hanger. Pipe hanger repaired. Valve repair j-- delayed pending parts availability and unit outage. Blank flange was L_._,t ' __ installed upstream of SO2-14-26A to restore loop operability. Loop L _.1_ : | ||
t .t suspected due to broken pipe hanger. Pipe hanger repaired. Valve repair | |||
j-- delayed pending parts availability and unit outage. Blank flange was L_._,t ' __ installed upstream of SO2-14-26A to restore loop operability. Loop | |||
L _.1_ : | |||
operability verified by observing zero flow with inject. ton valve closed. | operability verified by observing zero flow with inject. ton valve closed. | ||
L______ | L______ | ||
^ | ^ | ||
- .w e | - .w e | ||
(__T_u L._E ' ' i 11 0l O'~i NA j ,w 3'^, Surveillance Testing I ' ' | |||
(__T_u L._E ' ' i 11 0l O'~i | |||
NA j ,w 3'^, Surveillance Testing I ' ' | |||
^ | ^ | ||
l !. ..'. 1, d_. g Z_j LZ, NA - I , - | l !. ..'. 1, d_. g Z_j LZ, NA - I , - | ||
i | i NA 1 | ||
NA 1 | |||
A i | A i | ||
L _E LO L0iOj _ [ Zj [ { NA ~ | L _E LO L0iOj _ [ Zj [ { NA ~ | ||
| Line 109: | Line 68: | ||
- *(hA$ e{jl g A , ,, | - *(hA$ e{jl g A , ,, | ||
i , | i , | ||
ly t ( L . NA., n ,, 9% i 1 | |||
: t. ' | : t. ' | ||
y p pi Pt( J. Cooney/ {215) B J+1 - WN | y p pi Pt( J. Cooney/ {215) B J+1 - WN | ||
. n ,,. @ , | . n ,,. @ , | ||
. j(9 b) | . j(9 b) | ||
.J | .J | ||
/ ~ ^ | / ~ ^ | ||
| Line 123: | Line 78: | ||
' C ! f, | ' C ! f, | ||
,L4 7 9 0810 049A | ,L4 7 9 0810 049A | ||
/ | / | ||
* . ' L2 b M}} | * . ' L2 b M}} | ||
Revision as of 02:38, 2 February 2020
| ML19242C502 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 08/02/1979 |
| From: | Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| LER-79-034-03L, LER-79-34-3L, NUDOCS 7908100492 | |
| Download: ML19242C502 (1) | |
Text
_ _
S Mr. ..yi. H. Gr ie r , Directu '
'-79-34/3L Mr. .4 o pe t t i ...n b Enforse ,;nt, s eq i r .,
U,_ m !c ar de p latory wm i _ . i on
931 Nrk , e we nm
- Pru.34a, P I ). d l Oc .c "r. Oricr:
This L.E.R. refers to MD 2-14-26A Core Spray Ten Loop Isolation valve failing in mid-position. Applicable Tech. S pe c s .
are 3. 5.F.1 and 3.5. A.2.
U S NUCLE AR REGUt A Trav FY 'S.M LICENSEE EVENT REPORT at:c l l ' ! !
- h i Pt.E aSE P A' N T C 9 f v 'E A L L A E OL' a E O M ^ n"19 ]N
'a d p-i c. -a le l l2 ,L, C ~ 'C i' ,'
!' ' ' !' 'I I'! '
'!T' I f,Jj CO .
! :, !J - !: 12 17
. o .z . '..[O l 7 1 0!J.l 7 1 9(Wr lo't '7 1[ e
[.1 s
i e r . -s <:u,e. c i i _Following a successful surveillance flow test, the core spray loop A twsC m
L_ , . i test valve SO2-14-26A failed to fully close. At same tiwe E-4 die sel seas r- -' out of service for governor modification. Core spray loop A was declared ri, La _ inoperable and an orderly shutdown initiated in accord with tech. spec.
I~t. j ; 3.5.F.2. Diesel was made operable in about 2 hrs. and plant was returned _ . _ _
c -- . to full power as permitted by tech spec. 3.3. A.2. Unit was shutdown for L _c u. t _ i.. valve repair on 7-6-79 z n > a C
O] S!F!O (__E' h (_B__j h ! V ! Al V V! EI XiO W[ 1
,_ 4
/
- -
!7i 9l l-;
- f0 !3 l4 l- -I l013' -
LLi l- O' 6 *'
% , t 1 M .AJ[ J[ ! 01 O! 6l 41 f[ g g[ wI 0'3'O
~ -
r.
~ " -
Valve seat ring was found backed '5ut and distorted. Excessive vibration t .t suspected due to broken pipe hanger. Pipe hanger repaired. Valve repair j-- delayed pending parts availability and unit outage. Blank flange was L_._,t ' __ installed upstream of SO2-14-26A to restore loop operability. Loop L _.1_ :
operability verified by observing zero flow with inject. ton valve closed.
L______
^
- .w e
(__T_u L._E ' ' i 11 0l O'~i NA j ,w 3'^, Surveillance Testing I ' '
^
l !. ..'. 1, d_. g Z_j LZ, NA - I , -
i NA 1
A i
L _E LO L0iOj _ [ Zj [ { NA ~
, D_
d_] Lo LO Loj 'I NA
- i' g
( {' $ _I . _
NA r?I -
^ " '
'7 ~
- *(hA$ e{jl g A , ,,
i ,
ly t ( L . NA., n ,, 9% i 1
- t. '
y p pi Pt( J. Cooney/ {215) B J+1 - WN
. n ,,. @ ,
. j(9 b)
.J
/ ~ ^
6
' C ! f,
,L4 7 9 0810 049A
/
- . ' L2 b M