ML19332A254: Difference between revisions
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{{#Wiki_filter:- | {{#Wiki_filter:- | ||
) c:etzu m U. S. NLCtt.A,'1 AEOUt.ATORY C wMI5310't | ) c:etzu m U. S. NLCtt.A,'1 AEOUt.ATORY C wMI5310't | ||
"'"' ucENSEE EVENT REPCRT EXHIBIT A c I i ! _I I l@ utrus msr ea rver st n:wns ismusncm cesinetstecci. . | "'"' ucENSEE EVENT REPCRT EXHIBIT A c I i ! _I I l@ utrus msr ea rver st n:wns ismusncm cesinetstecci. . | ||
to i oj@i'i l1l 1 i i 1 i@I,_I , _:,_J. e g m , i r ioum | to i oj@i'i l1l 1 i i 1 i@I,_I , _:,_J. e g m , i r ioum ti ct, 3:= | ||
ti ct, 3:= | |||
M .,tL B. @ uLo imuoi-m I..... o i oi o i_ oio I .. .. ..u m .. , | M .,tL B. @ uLo imuoi-m I..... o i oi o i_ oio I .. .. ..u m .. , | ||
c:vT Q ,'",$ [LJgj w | |||
10 5!O I - t 0 l 3l0 l 2 eGL1 ei ca:.a? v..sta u I 012 l 3MJ 9@l0 i<ts :4rs ra ?s l 8at.:.r:.re | |||
c:vT Q ,'",$ [LJgj | |||
' 219! 8I 0l@ a. | ' 219! 8I 0l@ a. | ||
N gl avssT At 0600 ets:wncs followingAso routine >=ca samAsus ging oc:."B" st:vENets Core Flood@ Tank. f it was reporte_d _ _j that "B" CFT Sample' Isolation Valve CFV-12 would not close. This created an f | N gl avssT At 0600 ets:wncs followingAso routine >=ca samAsus ging oc:."B" st:vENets Core Flood@ Tank. f it was reporte_d _ _j that "B" CFT Sample' Isolation Valve CFV-12 would not close. This created an f | ||
,g, | ,g, No effect upon the plant ] | ||
No effect upon the plant ] | |||
g p . event. contrary to Technical Specification 3.6.3.1.b. | g p . event. contrary to Technical Specification 3.6.3.1.b. | ||
CFT Isolation' Valve CFV-42 was failed in the closed position] - | CFT Isolation' Valve CFV-42 was failed in the closed position] - | ||
| Line 43: | Line 32: | ||
to isolate the penetration. This is the second occurrence o'f th'is type reportedj gg for CFV-12. Reference LER 77-109. J | to isolate the penetration. This is the second occurrence o'f th'is type reportedj gg for CFV-12. Reference LER 77-109. J | ||
. =. | . =. | ||
QS$ l Cab 18 | QS$ l Cab 18 | ||
. C*ue va gy g re s?,st cab 1E CY' %E4? 308 tb,;;;( $b :::t C::t C::t Skt ::8 LSLRJO lxJ@ LzJ@ IJI vi Al ti vie IX l@ [Fj@ [Dj @ .3 F,.sE. - , to el 82 C00;taE%CI IS 19 s t M47 ' EV81334 s t =*a t wriat. " :. | . C*ue va gy g re s?,st cab 1E CY' %E4? 308 tb,;;;( $b :::t C::t C::t Skt ::8 LSLRJO lxJ@ LzJ@ IJI vi Al ti vie IX l@ [Fj@ [Dj @ .3 F,.sE. - , to el 82 C00;taE%CI IS 19 s t M47 ' EV81334 s t =*a t wriat. " :. | ||
"l*C8 7 %C. :E T'" t | "l*C8 7 %C. :E T'" t | ||
@ ;gge qgao_2t,z_Laj EVl%? ' Eaa t-j 11!ol2l y 10 13 l a a lt 1 x | @ ;gge qgao_2t,z_Laj EVl%? ' Eaa t-j 11!ol2l y 10 13 l a a lt 1 x | ||
| Line 59: | Line 46: | ||
nothing relative to CFV-12's failure. The valve _was declared operable at 092_0_ ,j gg ~ | nothing relative to CFV-12's failure. The valve _was declared operable at 092_0_ ,j gg ~ | ||
on December 4, 1979, after successful. completion of Surveillance Testing. To j rd. ] L further verify operability, CFV-12 was repetitively cycled on August 5, 1980 _ | on December 4, 1979, after successful. completion of Surveillance Testing. To j rd. ] L further verify operability, CFV-12 was repetitively cycled on August 5, 1980 _ | ||
No further corrective J E, H] L,acYion | No further corrective J E, H] L,acYion | ||
_w.ith | _w.ith is d-e.no e me failure - | ||
is d-e.no e me failure - | |||
T necessary.-. and has functioned properly to date. ** | T necessary.-. and has functioned properly to date. ** | ||
a,y's s o. . . : .i . ,.r., @ | a,y's s o. . . : .i . ,.r., @ | ||
t P. Min :x:,t..:n:.e:- @ | t P. Min :x:,t..:n:.e:- @ | ||
NA Operator observation l g [EJ@ l,,'I | NA Operator observation l g [EJ@ l,,'I a m tfy C: Nit %f I | ||
a m tfy C: Nit %f I | |||
l@L,_._ - | l@L,_._ - | ||
l [B_J@l | l [B_J@l | ||
. < a LCCa?' % :' 'fk3 833 at; st es a f st A31 a v7.'W F a:"tViiv I | . < a LCCa?' % :' 'fk3 833 at; st es a f st A31 a v7.'W F a:"tViiv I | ||
- - E, rg,, | - - E, rg,, | ||
t, z t NA ] [- _ | t, z t NA ] [- _ | ||
NA | NA | ||
.,:,s,.a~.o Js ,,- - | .,:,s,.a~.o Js ,,- - | ||
on. m, = u:-.m, | on. m, = u:-.m, | ||
[iE Io 1 o I oj@l_zj@t .NA _ _ _ _ , _ = . _ | [iE Io 1 o I oj@l_zj@t .NA _ _ _ _ , _ = . _ | ||
' ' n.,:,sA' m'iu '' - | ' ' n.,:,sA' m'iu '' - | ||
,. :n:-e%@ ' | ,. :n:-e%@ ' | ||
| Line 92: | Line 66: | ||
E,rg,,-Io i o-1P.,J,8L.:_ | E,rg,,-Io i o-1P.,J,8L.:_ | ||
m- ,c. e. :,u..m :. . n , . . | m- ,c. e. :,u..m :. . n , . . | ||
y | y | ||
{, g[gJgl . NA _ | {, g[gJgl . NA _ | ||
.: .. u :~.. | .: .. u :~.. | ||
'* ,o..;L . | '* ,o..;L . | ||
.e NA J 'lIiLlfIIII l_ i ,I gj g [n Nj@:ti:.'r?'C%. | .e NA J 'lIiLlfIIII l_ i ,I gj g [n Nj@:ti:.'r?'C%. | ||
ga t- | ga t- | ||
_.j. | |||
__Saas of preparer: dg , g. (90/4 795-6!.86 80091503V1 m ms seem momm u s | __Saas of preparer: dg , g. (90/4 795-6!.86 80091503V1 m ms seem momm u s | ||
I Supplementary Information Report No.: 50-302/79-102/03L-1 Facility: Crystal River Unit #3 Report Date: 29 August 1980 Occurrence Date: 23 October 1979 Identification of Occurrence: "B" Core Flood Tank sample isolation valve, CFV-12, inoperabic contrary to Technical Specification 3.6.3.1.b. | I Supplementary Information Report No.: 50-302/79-102/03L-1 Facility: Crystal River Unit #3 Report Date: 29 August 1980 Occurrence Date: 23 October 1979 Identification of Occurrence: "B" Core Flood Tank sample isolation valve, CFV-12, inoperabic contrary to Technical Specification 3.6.3.1.b. | ||
Conditions Prior to Occurrence: Mode 1, Power Operation (100%) | Conditions Prior to Occurrence: Mode 1, Power Operation (100%) | ||
| Line 118: | Line 81: | ||
Analysis of Occurrence: No effect upon the plant or general public. | Analysis of Occurrence: No effect upon the plant or general public. | ||
Corrective Action: Further investigation and troubleshooting has revealed nothing relative to CFV-12's failure to close. The j valve was declared operable on 4 December 1979 after l successful completion of SP-135, Engineered Safep4ards l | Corrective Action: Further investigation and troubleshooting has revealed nothing relative to CFV-12's failure to close. The j valve was declared operable on 4 December 1979 after l successful completion of SP-135, Engineered Safep4ards l | ||
Actuation System Response Time Test. To further verify operability, CFV-12 was repetitively cycled on 5 August 1980 with no failure and has functioned properly to date. As a result of this investigation no further corrective action is deemed necessary. | Actuation System Response Time Test. To further verify operability, CFV-12 was repetitively cycled on 5 August 1980 with no failure and has functioned properly to date. As a result of this investigation no further corrective action is deemed necessary. | ||
Failure Date: This is the second occurrence reported for CFV-12. | Failure Date: This is the second occurrence reported for CFV-12. | ||
(Reference LER 77-109) | (Reference LER 77-109) | ||
. . - - - - - -}} | . . - - - - - -}} | ||
Latest revision as of 16:43, 31 January 2020
| ML19332A254 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 08/29/1980 |
| From: | Neuschaefer E FLORIDA POWER CORP. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19332A250 | List: |
| References | |
| LER-79-102-03L, LER-79-102-3L, NUDOCS 8009110342 | |
| Download: ML19332A254 (2) | |
Text
-
) c:etzu m U. S. NLCtt.A,'1 AEOUt.ATORY C wMI5310't
"'"' ucENSEE EVENT REPCRT EXHIBIT A c I i ! _I I l@ utrus msr ea rver st n:wns ismusncm cesinetstecci. .
to i oj@i'i l1l 1 i i 1 i@I,_I , _:,_J. e g m , i r ioum ti ct, 3:=
M .,tL B. @ uLo imuoi-m I..... o i oi o i_ oio I .. .. ..u m .. ,
c:vT Q ,'",$ [LJgj w
10 5!O I - t 0 l 3l0 l 2 eGL1 ei ca:.a? v..sta u I 012 l 3MJ 9@l0 i<ts :4rs ra ?s l 8at.:.r:.re
' 219! 8I 0l@ a.
N gl avssT At 0600 ets:wncs followingAso routine >=ca samAsus ging oc:."B" st:vENets Core Flood@ Tank. f it was reporte_d _ _j that "B" CFT Sample' Isolation Valve CFV-12 would not close. This created an f
,g, No effect upon the plant ]
g p . event. contrary to Technical Specification 3.6.3.1.b.
CFT Isolation' Valve CFV-42 was failed in the closed position] -
g g ,_ or. general public. ,
to isolate the penetration. This is the second occurrence o'f th'is type reportedj gg for CFV-12. Reference LER 77-109. J
. =.
QS$ l Cab 18
. C*ue va gy g re s?,st cab 1E CY' %E4? 308 tb,;;;( $b :::t C::t C::t Skt ::8 LSLRJO lxJ@ LzJ@ IJI vi Al ti vie IX l@ [Fj@ [Dj @ .3 F,.sE. - , to el 82 C00;taE%CI IS 19 s t M47 ' EV81334 s t =*a t wriat. " :.
"l*C8 7 %C. :E T'" t
@ ;gge qgao_2t,z_Laj EVl%? ' Eaa t-j 11!ol2l y 10 13 l a a lt 1 x
[.-.!
2, Ll.J 22 u 2 a >
4 dr 2-
- n=a' -w., @ ^n Mir ,FOia "c.'5it' EnN.'I..
m!: sn LAl@ lRl3I4_IOJ L.ZJ@ l ofoI 01 ofe4 LYJ@.
LZJ@ Ls.J@
- Lx@LxJ@
13 ;* 23 3 3+ 44 4: as 64 47 e caus essemanes Aso c aasenvr acncss @ ,,__j gag l The cause of'this event is unknown. Further investigat, ion _has revealed ,
nothing relative to CFV-12's failure. The valve _was declared operable at 092_0_ ,j gg ~
on December 4, 1979, after successful. completion of Surveillance Testing. To j rd. ] L further verify operability, CFV-12 was repetitively cycled on August 5, 1980 _
No further corrective J E, H] L,acYion
_w.ith is d-e.no e me failure -
T necessary.-. and has functioned properly to date. **
a,y's s o. . . : .i . ,.r., @
t P. Min :x:,t..:n:.e:- @
NA Operator observation l g [EJ@ l,,'I a m tfy C: Nit %f I
l@L,_._ -
l [B_J@l
. < a LCCa?' % :' 'fk3 833 at; st es a f st A31 a v7.'W F a:"tViiv I
- - E, rg,,
t, z t NA ] [- _
NA
.,:,s,.a~.o Js ,,- -
on. m, = u:-.m,
[iE Io 1 o I oj@l_zj@t .NA _ _ _ _ , _ = . _
' ' n.,:,sA' m'iu -
,. :n:-e%@ '
NA ____ - _ ,- -_ _ .
E,rg,,-Io i o-1P.,J,8L.:_
m- ,c. e. :,u..m :. . n , . .
y
{, g[gJgl . NA _
.: .. u :~..
'* ,o..;L .
.e NA J 'lIiLlfIIII l_ i ,I gj g [n Nj@:ti:.'r?'C%.
ga t-
_.j.
__Saas of preparer: dg , g. (90/4 795-6!.86 80091503V1 m ms seem momm u s
I Supplementary Information Report No.: 50-302/79-102/03L-1 Facility: Crystal River Unit #3 Report Date: 29 August 1980 Occurrence Date: 23 October 1979 Identification of Occurrence: "B" Core Flood Tank sample isolation valve, CFV-12, inoperabic contrary to Technical Specification 3.6.3.1.b.
Conditions Prior to Occurrence: Mode 1, Power Operation (100%)
Description of Occurrence: At 0600 following routine sampling of "B" Core Flood l Tank, it was reported that "B" CFT sample isolation valve CFV-12, would not close. CFT sample isolation valve CFV-42 was closed and disabled to immediately isolate the affected penetration. CFV-42 operability was restored when CFV-12 was closed. CFV-12 was maintained in the closed position with the valve operating power supply de-energized and under admin-istrative control until determination of failure was completed.
Designation of Apparent Cause: The cause of this event is unknown.
Analysis of Occurrence: No effect upon the plant or general public.
Corrective Action: Further investigation and troubleshooting has revealed nothing relative to CFV-12's failure to close. The j valve was declared operable on 4 December 1979 after l successful completion of SP-135, Engineered Safep4ards l
Actuation System Response Time Test. To further verify operability, CFV-12 was repetitively cycled on 5 August 1980 with no failure and has functioned properly to date. As a result of this investigation no further corrective action is deemed necessary.
Failure Date: This is the second occurrence reported for CFV-12.
(Reference LER 77-109)
. . - - - - - -