ML19319B782: Difference between revisions
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=Text= | =Text= | ||
{{#Wiki_filter:.-_ ._ .. . . - | {{#Wiki_filter:.-_ ._ .. . . - | ||
.. . . . - . . .~ | .. . . . - . . .~ | ||
, LICENSEE EVENT REPORT CoNinot stoCC LLj i i fj 8 G | , LICENSEE EVENT REPORT CoNinot stoCC LLj i i fj 8 G | ||
* "* L '* *I | * "* L '* *I Lect =st N u w ot . i v e"g I ,",' ,'g' 810IH I D[B ! S 11j l0jj$L j 010i NiPlF1-10l 31 l4 I lj lj l _; ljx l0j i | ||
e . . - as s n h 3ln C. . ec. t ..o.L.....o..,, | |||
Lect =st N u w ot . i v e"g I ,",' ,'g' 810IH I D[B ! S 11j l0jj$L j 010i NiPlF1-10l 31 l4 I lj lj l _; ljx l0j | |||
C. . ec. t ..o.L.....o..,, | |||
: s. .. . C no C - t , ~u.. . Est . ,,... .<,o.,:,,t 1 | : s. .. . C no C - t , ~u.. . Est . ,,... .<,o.,:,,t 1 | ||
con s' Lg_aj Lpej L p Losi i s i 0 : ..i 034 1 i1 6 a | con s' Lg_aj Lpej L p Losi i s i 0 : ..i 034 1 i1 6 a | ||
Line 35: | Line 27: | ||
: 6. 2. is 6, 7 g ., | : 6. 2. is 6, 7 g ., | ||
t yt NT DE SCpiP1'oM | t yt NT DE SCpiP1'oM | ||
@l Auxiliary Feed Pu=p 1-1 was rendered inoperable to enable Station g i as y | @l Auxiliary Feed Pu=p 1-1 was rendered inoperable to enable Station g i as y I | ||
I | |||
@](espersonnel to stroke _" Main Steam Line to Auxiliary Feed Pu=p Turbine 1-1 ; | @](espersonnel to stroke _" Main Steam Line to Auxiliary Feed Pu=p Turbine 1-1 ; | ||
a i 81 r es Isolation Valve" MS106. The valve was strokedsend nor=al lineup re- ] | a i 81 r es Isolation Valve" MS106. The valve was strokedsend nor=al lineup re- ] | ||
Line 43: | Line 33: | ||
AL ___ i Eno' 'e " crNt C riw en ave ** | AL ___ i Eno' 'e " crNt C riw en ave ** | ||
* C o ne Sun | * C o ne Sun | ||
* ta | * ta u a7v'e *="C'i Ea'r a veos a v o o 1 8 LcJ 7 89 so FJ LFJ is LZ ! ZlZ l Z f Zj Zj 12 17 LAJ 43 IZ as IZ tZ !Z4;f (NJ 43 4 | ||
u a7v'e *="C'i Ea'r a veos a v o o 1 8 LcJ 7 89 so FJ LFJ is LZ ! ZlZ l Z f Zj Zj 12 17 LAJ 43 IZ as IZ tZ !Z4;f (NJ 43 4 | |||
Causf otsca.rtion t | Causf otsca.rtion t | ||
@l.s MS106 was repack _ed_ to stop a packing leak. The valve was cycled to l t | @l.s MS106 was repack _ed_ to stop a packing leak. The valve was cycled to l t | ||
E!es verify proper operation. | E!es verify proper operation. | ||
1 F@ | |||
1 | |||
F@ | |||
7 89 - | 7 89 - | ||
i , | i , | ||
a i 1 | a i 1 | ||
s s EkNS % aowe a oveet a S ta tus ueb hv et | s s EkNS % aowe a oveet a S ta tus ueb hv et | ||
* O**Covt a v CL 4C nert soae | * O**Covt a v CL 4C nert soae | ||
Line 64: | Line 47: | ||
[010101 to 12 LJA 13 44 I (AJ [_,,EA _ j | [010101 to 12 LJA 13 44 I (AJ [_,,EA _ j | ||
^ 4t 46 _ to | ^ 4t 46 _ to | ||
*8 eatLtASE'O oe cowe ase.g e t ASE seoums or actsvetv | *8 eatLtASE'O oe cowe ase.g e t ASE seoums or actsvetv 7 . | ||
7 . | |||
LZ_j ,[g 9 .O i NA tt ** | LZ_j ,[g 9 .O i NA tt ** | ||
i l 45 NA LocasecNce.tLtatt i | i l 45 NA LocasecNce.tLtatt i | ||
M Pf nsoNNE L E E POSURE $ | M Pf nsoNNE L E E POSURE $ | ||
%vedut o i v et OF SC e s*T eoM | %vedut o i v et OF SC e s*T eoM | ||
> .l 01 01 01 LIJ .. 2 l NA 3 i i w Pt nSoNNEL 'NJundets Nuvot e ot sC o.e t ion 1 | |||
> .l 01 01 01 LIJ .. 2 l NA 3 i i w Pt nSoNNEL 'NJundets | |||
Nuvot e ot sC o.e t ion 1 | |||
NA l | NA l | ||
\ | \ | ||
Line 81: | Line 59: | ||
.a l ' | .a l ' | ||
f. | f. | ||
oF FSlit con 5tOUf NCt3 | oF FSlit con 5tOUf NCt3 | ||
_ NA i | _ NA i Loss oR oau=GL 10 8 ACILIT v f.Pt OL SC a se t some l | ||
Loss oR oau=GL 10 8 ACILIT v f.Pt OL SC a se t some l | |||
3, . I rZJ L NA l w | 3, . I rZJ L NA l w | ||
ruotsCITV | ruotsCITV | ||
; | ; | ||
@l | @l NA | ||
NA | |||
- ] | - ] | ||
) acomoN4L e *Ctcas l dia* | ) acomoN4L e *Ctcas l dia* | ||
NA l | NA l | ||
) .o l %, . l. - | ) .o l %, . l. - | ||
,,,,, Rich.Cheske , | ,,,,, Rich.Cheske , | ||
(419) 259-5000, Ext. 267 | (419) 259-5000, Ext. 267 DVR 110-1 8001270 2 00 l | ||
DVR 110-1 | |||
8001270 2 00 | |||
l | |||
._ _. - .. m | ._ _. - .. m O' TOLEDO EDISON COMPANY DAVIS-BESSE UNIT ONE NUCLEAR POWF.R STATION SUPPLEMENTAL INFORMATION FOR LER NP-33 .'7-71 DATE OF EVENT: August 19, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF CCCURRENCE: Auxiliary Feed Pu=p 1-1 steam supply isolated for maintenance Conditions Prior to Occurrence: The plant was in Mode,2, with Power (MWT) = 0 and Load 1.MWE) = 0. | ||
O' TOLEDO EDISON COMPANY DAVIS-BESSE UNIT ONE NUCLEAR POWF.R STATION SUPPLEMENTAL INFORMATION FOR LER NP-33 .'7-71 DATE OF EVENT: August 19, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF CCCURRENCE: Auxiliary Feed Pu=p 1-1 steam supply isolated for maintenance Conditions Prior to Occurrence: The plant was in Mode,2, with Power (MWT) = 0 and Load 1.MWE) = 0. | |||
Description of Occurrence: At 1530 hours on August 19, 1977 Auxiliary Feed Pu=p Turbine (AFPT) 1-1 trip throttle valve was closed for =aintenance personnel to test stroke " Main Steam Line to Auxiliary Feed Pu=p Turbine 1-1 Isolation Valve" MS106 per Maintenance Work Order MWO 77-1585 after repacking it. Although the repacking need not have been done at this particular ti=e, it was thought that deferring the problem until no Action Statements would be entered wculd be a peer | Description of Occurrence: At 1530 hours on August 19, 1977 Auxiliary Feed Pu=p Turbine (AFPT) 1-1 trip throttle valve was closed for =aintenance personnel to test stroke " Main Steam Line to Auxiliary Feed Pu=p Turbine 1-1 Isolation Valve" MS106 per Maintenance Work Order MWO 77-1585 after repacking it. Although the repacking need not have been done at this particular ti=e, it was thought that deferring the problem until no Action Statements would be entered wculd be a peer | ||
=aintenance and safety practice. This placed the Station in the Action State ent | =aintenance and safety practice. This placed the Station in the Action State ent | ||
Line 125: | Line 81: | ||
Corrective Action: The valve stroking was completed and MS106 and AFPT l-1 trip throttle valve were returned to normal status at 1600 hours on August 19, 1977. | Corrective Action: The valve stroking was completed and MS106 and AFPT l-1 trip throttle valve were returned to normal status at 1600 hours on August 19, 1977. | ||
l i | l i | ||
Failure Data: There have been no prior occurrences of removal of an AFPT frem service to perform a valve stroking. 1 s l Y | |||
Failure Data: There have been no prior occurrences of removal of an AFPT frem service to perform a valve stroking. 1 s l | s- / , | ||
l 1}} | l 1}} |
Revision as of 06:32, 1 February 2020
ML19319B782 | |
Person / Time | |
---|---|
Site: | Davis Besse ![]() |
Issue date: | 09/16/1977 |
From: | Chesko R TOLEDO EDISON CO. |
To: | |
Shared Package | |
ML19319B712 | List: |
References | |
NUDOCS 8001270250 | |
Download: ML19319B782 (2) | |
Text
.-_ ._ .. . . -
.. . . . - . . .~
, LICENSEE EVENT REPORT CoNinot stoCC LLj i i fj 8 G
- "* L '* *I Lect =st N u w ot . i v e"g I ,",' ,'g' 810IH I D[B ! S 11j l0jj$L j 010i NiPlF1-10l 31 l4 I lj lj l _; ljx l0j i
e . . - as s n h 3ln C. . ec. t ..o.L.....o..,,
- s. .. . C no C - t , ~u.. . Est . ,,... .<,o.,:,,t 1
con s' Lg_aj Lpej L p Losi i s i 0 : ..i 034 1 i1 6 a
tgis11,9;7 7; g 0; 9; li
- 6. 2. is 6, 7 g .,
t yt NT DE SCpiP1'oM
@l Auxiliary Feed Pu=p 1-1 was rendered inoperable to enable Station g i as y I
@](espersonnel to stroke _" Main Steam Line to Auxiliary Feed Pu=p Turbine 1-1 ;
a i 81 r es Isolation Valve" MS106. The valve was strokedsend nor=al lineup re- ]
o E L _.gs;ablished. (NF-33-77-71) t 7 89 m
AL ___ i Eno' 'e " crNt C riw en ave **
- C o ne Sun
- ta u a7v'e *="C'i Ea'r a veos a v o o 1 8 LcJ 7 89 so FJ LFJ is LZ ! ZlZ l Z f Zj Zj 12 17 LAJ 43 IZ as IZ tZ !Z4;f (NJ 43 4
Causf otsca.rtion t
@l.s MS106 was repack _ed_ to stop a packing leak. The valve was cycled to l t
E!es verify proper operation.
1 F@
7 89 -
i ,
a i 1
s s EkNS % aowe a oveet a S ta tus ueb hv et
- O**Covt a v CL 4C nert soae
)
FSD iG laJ 9
[010101 to 12 LJA 13 44 I (AJ [_,,EA _ j
^ 4t 46 _ to
- 8 eatLtASE'O oe cowe ase.g e t ASE seoums or actsvetv 7 .
LZ_j ,[g 9 .O i NA tt **
i l 45 NA LocasecNce.tLtatt i
M Pf nsoNNE L E E POSURE $
%vedut o i v et OF SC e s*T eoM
> .l 01 01 01 LIJ .. 2 l NA 3 i i w Pt nSoNNEL 'NJundets Nuvot e ot sC o.e t ion 1
NA l
\
8\O Ot0 t
> ,, i,a
.a l '
f.
oF FSlit con 5tOUf NCt3
_ NA i Loss oR oau=GL 10 8 ACILIT v f.Pt OL SC a se t some l
3, . I rZJ L NA l w
ruotsCITV
@l NA
- ]
) acomoN4L e *Ctcas l dia*
NA l
) .o l %, . l. -
,,,,, Rich.Cheske ,
(419) 259-5000, Ext. 267 DVR 110-1 8001270 2 00 l
._ _. - .. m O' TOLEDO EDISON COMPANY DAVIS-BESSE UNIT ONE NUCLEAR POWF.R STATION SUPPLEMENTAL INFORMATION FOR LER NP-33 .'7-71 DATE OF EVENT: August 19, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF CCCURRENCE: Auxiliary Feed Pu=p 1-1 steam supply isolated for maintenance Conditions Prior to Occurrence: The plant was in Mode,2, with Power (MWT) = 0 and Load 1.MWE) = 0.
Description of Occurrence: At 1530 hours0.0177 days <br />0.425 hours <br />0.00253 weeks <br />5.82165e-4 months <br /> on August 19, 1977 Auxiliary Feed Pu=p Turbine (AFPT) 1-1 trip throttle valve was closed for =aintenance personnel to test stroke " Main Steam Line to Auxiliary Feed Pu=p Turbine 1-1 Isolation Valve" MS106 per Maintenance Work Order MWO 77-1585 after repacking it. Although the repacking need not have been done at this particular ti=e, it was thought that deferring the problem until no Action Statements would be entered wculd be a peer
=aintenance and safety practice. This placed the Station in the Action State ent
(
V of Technical Specification 3.7.1.2.
Designation of Aoparent Cause of Occurrence: The trip throttle valve was closed to allow =aintenance to stroke MS106 wnien had just been repacked. The repacking was done with the valve backseated for which MS106 recained open and was therefere not reportable.
Analvsis of Occurrence: There was no threat to the health and safety of the public or to Station personnel. The valve being strcke tested and the trip throttle valve could have been opened if needed which would have returned AFPT 1-1 to operability. AFFT l-2 was operable to autocacically supply Auxiliary Feedwater if needed.
Corrective Action: The valve stroking was completed and MS106 and AFPT l-1 trip throttle valve were returned to normal status at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on August 19, 1977.
l i
Failure Data: There have been no prior occurrences of removal of an AFPT frem service to perform a valve stroking. 1 s l Y
s- / ,
l 1