ML19329B874: Difference between revisions
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{{#Wiki_filter:. . _ _ . . . .-- - | {{#Wiki_filter:. . _ _ . . . .-- - | ||
O- . | O- . | ||
1.lCENSEE 'iVENT REPORT d , . | 1.lCENSEE 'iVENT REPORT d , . | ||
CoNfnot stoCs [1] 1 1 lj i c | |||
*ML LsCCNSE NtJust a s',I,"( I I,",I ,"g' 1 | *ML LsCCNSE NtJust a s',I,"( I I,",I ,"g' 1 | ||
[s0 jOj J 0l01 Nt PtF1-10 13l -l 4 1J1l1l1 1ao 11 8.10 lH I Dl31 S 11) . . - i a x W0J | [s0 jOj J 0l01 Nt PtF1-10 13l -l 4 1J1l1l1 1ao 11 8.10 lH I Dl31 S 11) . . - i a x W0J C A. co. ."I'?" ' ".',*,2U ooc t , ~uo. . | ||
e w ~. n... . c .c . , . . . | e w ~. n... . c .c . , . . . | ||
oi CoNtf 1 I LTJ Li (0iSt O p ._ ; 0 3 ,4 i 6 1 , O! 711141717 F .1 08 1 0 i 3,7 1 7; r'JlI 'W [W si .a so 1. is so E VINT Of SCaiP f eoM , | oi CoNtf 1 I LTJ Li (0iSt O p ._ ; 0 3 ,4 i 6 1 , O! 711141717 F .1 08 1 0 i 3,7 1 7; r'JlI 'W [W si .a so 1. is so E VINT Of SCaiP f eoM , | ||
g ; Possible degradation of Component Cooling Water System. Parks of valve , | g ; Possible degradation of Component Cooling Water System. Parks of valve , | ||
7 es so g g liners were found in a strainer on suction of Component Cooling Water ; | 7 es so g g liners were found in a strainer on suction of Component Cooling Water ; | ||
r es w gl Pump 1-1. This is not a repetitive occurrence. (NP-32-77-10) l es w 61 a ss | r es w gl Pump 1-1. This is not a repetitive occurrence. (NP-32-77-10) l es w 61 a ss I | ||
m a L i EAE" 'c^nTE' Co-co~e ~i Coor 'fu kh"' old'uT2'C" ' "o'r . v,o, . . .o o r t C I S .! (Zj IVI AlLIV iEl X[ | |||
a L i | |||
ia y IZI Z ZlZ g @ | ia y IZI Z ZlZ g @ | ||
1 a s io si in 42 .. .i .a | 1 a s io si in 42 .. .i .a | ||
Line 53: | Line 39: | ||
. @ at [ Zj , | . @ at [ Zj , | ||
[Zj l NA I l UA l 2 4 s to It a. .5 60 Ptn50NNEL EXPOSURES | [Zj l NA I l UA l 2 4 s to It a. .5 60 Ptn50NNEL EXPOSURES | ||
=vwsea ' tv.g o# 1C s ee'som l 01 Of Of Lg l NA J io si i2 ia 6a | =vwsea ' tv.g o# 1C s ee'som l 01 Of Of Lg l NA J io si i2 ia 6a PERSONNEL INJU'Itts huueC4 DE SC aset tom - | ||
i.1010101 I NA l 3, s 'n is ia ea Of f Sitt con 5f Ouf NCES I | |||
PERSONNEL INJU'Itts huueC4 DE SC aset tom - | |||
i.1010101 I NA l 3, s 'n is ia ea | |||
Of f Sitt con 5f Ouf NCES I | |||
N | N | ||
* LOSS 08i Danaat;t to 8 ACittiv * | * LOSS 08i Danaat;t to 8 ACittiv * | ||
, t ypC oggC a.e,.o= | , t ypC oggC a.e,.o= | ||
VI | VI I | ||
L"^ . J - | |||
Putt Cif v | Putt Cif v | ||
@i][ NA -- l es . | @i][ NA -- l es . | ||
AOOsteoNAt p Actons | AOOsteoNAt p Actons | ||
@ es l NA l | @ es l NA l | ||
, m | , m s 31.- | ||
s 31.- | |||
I | I | ||
,,,, Jacque Lingenfelter/ Richard Brown (419 F 259-5000, Ext. 251 8002060hk . - - - - . . . . .- | ,,,, Jacque Lingenfelter/ Richard Brown (419 F 259-5000, Ext. 251 8002060hk . - - - - . . . . .- | ||
Line 83: | Line 57: | ||
~ - .- | ~ - .- | ||
. - . ..w... ~. .. | . - . ..w... ~. .. | ||
\O)s U . TOLEDO EDISCN COMPANY DAVIS-BESSE UNIT ONE NUCLEAR POWER STATION SUPPLEMENTAL INFORMATION FOR LER NP-32-77-10 DATE OF EVENT: July 14, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Possible degrading of Component Cooling Water . | |||
\O)s U . TOLEDO EDISCN COMPANY DAVIS-BESSE UNIT ONE NUCLEAR POWER STATION SUPPLEMENTAL INFORMATION FOR LER NP-32-77-10 | |||
DATE OF EVENT: July 14, 1977 | |||
FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Possible degrading of Component Cooling Water . | |||
System. | System. | ||
3 Conditions Prior to Occurrence: The plant was in Mode 4, with Power (MWI) = 0 and Load (MWE) = 0. | 3 Conditions Prior to Occurrence: The plant was in Mode 4, with Power (MWI) = 0 and Load (MWE) = 0. | ||
Description of occurrence: On July 14, 1977, at 1200 hours, during the removal of startup strainer on suction of Component Cooling Water (CCW) Pump 1-1, chunks of valve liners were found in the strainer. Since valves CC171, an 18 inch Fisher Butterfly and CC1467,an 18 inch Hammel-Da 1 Butterfly (Decay Heat Re-moval Cooler 1-1 Outlet Isolation Valves) were reported leaking past the seat the previous day, it was concluded that the larger sirat pieces of liners were from valves CC171 and CCl467. A small 3" liner which w.a also found in the | Description of occurrence: On July 14, 1977, at 1200 hours, during the removal of startup strainer on suction of Component Cooling Water (CCW) Pump 1-1, chunks of valve liners were found in the strainer. Since valves CC171, an 18 inch Fisher Butterfly and CC1467,an 18 inch Hammel-Da 1 Butterfly (Decay Heat Re-moval Cooler 1-1 Outlet Isolation Valves) were reported leaking past the seat the previous day, it was concluded that the larger sirat pieces of liners were from valves CC171 and CCl467. A small 3" liner which w.a also found in the | ||
Line 107: | Line 73: | ||
,-----.n v - - m--.m-w-.-- - - - - - . ----,,----.1-.m - -~ < | ,-----.n v - - m--.m-w-.-- - - - - - . ----,,----.1-.m - -~ < | ||
l l | l l | ||
a e, | a e, | ||
, , TOLEDO EDISON *C MO PANY DAVIS-BESSE UNIT CNE NUCLEAR POWER STATION SUPPLEMENTAL INFORMATION FOR LER NP-32-77-10 PACE 2 Corrective Action: , Component Cooling Water Loop 1-1 has been placed in service with strainers to intercept any loose particles in the system, At 1600 hcurs on July 28, 1977, new liners were installed on valves CC171 and CC1467 and the valves were reinstalled into the syste=. Valves CC1454 and CC1457 are presently being repaired by Maintenance personnel. These steps were taken to prevent recurrence, l | |||
, , TOLEDO EDISON *C MO PANY DAVIS-BESSE UNIT CNE NUCLEAR POWER STATION SUPPLEMENTAL INFORMATION FOR LER NP-32-77-10 PACE 2 | |||
Corrective Action: , Component Cooling Water Loop 1-1 has been placed in service with strainers to intercept any loose particles in the system, At 1600 hcurs on July 28, 1977, new liners were installed on valves CC171 and CC1467 and the valves were reinstalled into the syste=. Valves CC1454 and CC1457 are presently being repaired by Maintenance personnel. These steps were taken to prevent recurrence, l | |||
Failure Data: There have been.no previous similar occurrences. | Failure Data: There have been.no previous similar occurrences. | ||
1 L) k e | |||
1 L) | |||
k e | |||
M | M | ||
* al a e . ee ' esaug , , , | * al a e . ee ' esaug , , , |
Latest revision as of 22:16, 31 January 2020
ML19329B874 | |
Person / Time | |
---|---|
Site: | Davis Besse ![]() |
Issue date: | 08/03/1977 |
From: | Brown R, Lingenfelter J TOLEDO EDISON CO. |
To: | |
Shared Package | |
ML19329B827 | List: |
References | |
NUDOCS 8002060879 | |
Download: ML19329B874 (3) | |
Text
. . _ _ . . . .-- -
O- .
1.lCENSEE 'iVENT REPORT d , .
CoNfnot stoCs [1] 1 1 lj i c
- ML LsCCNSE NtJust a s',I,"( I I,",I ,"g' 1
[s0 jOj J 0l01 Nt PtF1-10 13l -l 4 1J1l1l1 1ao 11 8.10 lH I Dl31 S 11) . . - i a x W0J C A. co. ."I'?" ' ".',*,2U ooc t , ~uo. .
e w ~. n... . c .c . , . . .
oi CoNtf 1 I LTJ Li (0iSt O p ._ ; 0 3 ,4 i 6 1 , O! 711141717 F .1 08 1 0 i 3,7 1 7; r'JlI 'W [W si .a so 1. is so E VINT Of SCaiP f eoM ,
g ; Possible degradation of Component Cooling Water System. Parks of valve ,
7 es so g g liners were found in a strainer on suction of Component Cooling Water ;
r es w gl Pump 1-1. This is not a repetitive occurrence. (NP-32-77-10) l es w 61 a ss I
m a L i EAE" 'c^nTE' Co-co~e ~i Coor 'fu kh"' old'uT2'C" ' "o'r . v,o, . . .o o r t C I S .! (Zj IVI AlLIV iEl X[
ia y IZI Z ZlZ g @
1 a s io si in 42 .. .i .a
- ~
- CAU5r Ot3CA4PTION Q j The exact cause of the failure is unknown. ,
G' .,I -l 3 as ,
! ! l s i es o S n a'YuS teetaStatus o.S o av oeSCovt av DESCnerf TON
{' ($ lN I I I'b I (j j
) 3 9 to 12 is .. .t e4 80 o ceN s'. E annoumi or actevetv LOCatoom er et LL ASC
. @ at [ Zj ,
[Zj l NA I l UA l 2 4 s to It a. .5 60 Ptn50NNEL EXPOSURES
=vwsea ' tv.g o# 1C s ee'som l 01 Of Of Lg l NA J io si i2 ia 6a PERSONNEL INJU'Itts huueC4 DE SC aset tom -
i.1010101 I NA l 3, s 'n is ia ea Of f Sitt con 5f Ouf NCES I
N
- LOSS 08i Danaat;t to 8 ACittiv *
, t ypC oggC a.e,.o=
VI I
L"^ . J -
Putt Cif v
@i][ NA -- l es .
AOOsteoNAt p Actons
@ es l NA l
, m s 31.-
I
,,,, Jacque Lingenfelter/ Richard Brown (419 F 259-5000, Ext. 251 8002060hk . - - - - . . . . .-
, , -- _ . . , . . . , , . . . . .-...o,...-,9.y 7.,7-. ,--q _.---y
~ - .-
. - . ..w... ~. ..
\O)s U . TOLEDO EDISCN COMPANY DAVIS-BESSE UNIT ONE NUCLEAR POWER STATION SUPPLEMENTAL INFORMATION FOR LER NP-32-77-10 DATE OF EVENT: July 14, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Possible degrading of Component Cooling Water .
System.
3 Conditions Prior to Occurrence: The plant was in Mode 4, with Power (MWI) = 0 and Load (MWE) = 0.
Description of occurrence: On July 14, 1977, at 1200 hours0.0139 days <br />0.333 hours <br />0.00198 weeks <br />4.566e-4 months <br />, during the removal of startup strainer on suction of Component Cooling Water (CCW) Pump 1-1, chunks of valve liners were found in the strainer. Since valves CC171, an 18 inch Fisher Butterfly and CC1467,an 18 inch Hammel-Da 1 Butterfly (Decay Heat Re-moval Cooler 1-1 Outlet Isolation Valves) were reported leaking past the seat the previous day, it was concluded that the larger sirat pieces of liners were from valves CC171 and CCl467. A small 3" liner which w.a also found in the
.( strainer was concluded as being from either CC1454 or CC1457, Spent Fuel Pool Heat Exchanger Temperature Control Valves.
This occurrence is being reported in compliance with Administrative Control Technical Specification 6.9.1.S(i) . The station was not in violation of any Technical Specification and did not enter into any action statements.
The strainer was reinstalled in CCW Pump 1-1, and the pump was returned to service to pick up any additional ubber liner which may be in the system. The valves CC171,'CC1467, CC1454 and CC1457 were scheduled to be removed from ser-vice to inspect liners and to make necessary repairs.
Designation of Aoparent Cause of occurrence: The exact cause of failure is unknown. Upon disassembly and inspection of valves CC1467 and CC171, the liner had no indication of being bonded to the body with an epoxy which was specified by the valve manufacturer. Improper alignment by construction personnel is a second suspected possible cause. --
1 Analysis of occurrence: There was no danger to the health and safety of the public or station-personnel as a result of this occurrence. The other compon-ent cooling water loop was operable during the cause of this occurrence. No aberrations have been encountered in that loop.
s 9.- ' ** t en w ,
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.OA4 I NS eW # 6 $+4 sO aMY* 86 ** Mw g g , g , , g pg , ,
t - e .w-- -
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l l
a e,
, , TOLEDO EDISON *C MO PANY DAVIS-BESSE UNIT CNE NUCLEAR POWER STATION SUPPLEMENTAL INFORMATION FOR LER NP-32-77-10 PACE 2 Corrective Action: , Component Cooling Water Loop 1-1 has been placed in service with strainers to intercept any loose particles in the system, At 1600 hcurs on July 28, 1977, new liners were installed on valves CC171 and CC1467 and the valves were reinstalled into the syste=. Valves CC1454 and CC1457 are presently being repaired by Maintenance personnel. These steps were taken to prevent recurrence, l
Failure Data: There have been.no previous similar occurrences.
1 L) k e
M
- al a e . ee ' esaug , , ,
e U
- h"" 9. m = ), #* g p- gg , me g -
- H 4,e .ge - g w g, w 96.
- m,