ML19326A568: Difference between revisions
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. t | . t | ||
,m | ,m | ||
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1.lCENSE E E'.'ENT R EPORT s | |||
cominot stocs - Lj i f lj G | |||
1.lCENSE E E'.'ENT R EPORT | |||
* ** t "' I L't"),g" LeCCNSC measuot a 3"," "g' l0;Oj-J 0101 Ni P FI-101 3l -l 4 11l1 l 1! 1; l 0l3 l | * ** t "' I L't"),g" LeCCNSC measuot a 3"," "g' l0;Oj-J 0101 Ni P FI-101 3l -l 4 11l1 l 1! 1; l 0l3 l | ||
@]9IolH l DIB l Sill4. - 35 Jb .N Jo JPA | @]9IolH l DIB l Sill4. - 35 Jb .N Jo JPA C A t t Co# O te s cocett f aevaset a g gg m e ria s aC* oat cas t 0: com it i I 1L l LLs to t S i c i ..i : 03 :4 : 6, t1071,1,77 . 0i 8; 0 4,7 ; 7, si !4 '3r E' si 64 ss 2. is ao tvtuf of SCaiP1 TON g lDuring the Containment Spray System Monthly Surye111ance Testl Containment | ||
> as so glSprayPump1-1failedtomeetpumpheadacceptancecriteria.l Pressure ; | > as so glSprayPump1-1failedtomeetpumpheadacceptancecriteria.l Pressure ; | ||
a es a g lwas above the maximum acceptable limit. This is not a repetitive ; | a es a g lwas above the maximum acceptable limit. This is not a repetitive ; | ||
| Line 39: | Line 33: | ||
** l. I i | ** l. I i | ||
- I 5 '"'c' en CNdE'h"' old'Oryc",'",,'c, ,,,,a,. | - I 5 '"'c' en CNdE'h"' old'Oryc",'",,'c, ,,,,a,. | ||
@. l.N''""I | @. l.N''""I | ||
$I >> | $I >> | ||
I I 2 | I I 2 | ||
NS in~.iT ~, | NS in~.iT ~, ((U, ,i i R12 19 10 I | ||
[NJ caust otScais tion g | |||
i R12 19 10 I | |||
[NJ | |||
caust otScais tion g | |||
l Suction pressure indicator and flow transmitter were out of calibration. | l Suction pressure indicator and flow transmitter were out of calibration. | ||
_ _ . _ l s | _ _ . _ l s | ||
gg'Theywererecalibratedandthepumpthenmettheacceptancecriteria. u l | gg'Theywererecalibratedandthepumpthenmettheacceptancecriteria. u l | ||
\ = | \ = | ||
gl - | gl - | ||
J s as | J s as M | ||
I | |||
#g"s#' | #g"s#' | ||
a s so tog a status pe's Yav DescovCav nESCnervoom I DI 01 1.A l (pj ( NA J 3 to s2 13 .4 .t 46 80 | a s so tog a status pe's Yav DescovCav nESCnervoom I DI 01 1.A l (pj ( NA J 3 to s2 13 .4 .t 46 80 at ofNe'$NC auovast or acievetv Lof.A1no*e o' mL LCasC | ||
at ofNe'$NC auovast or acievetv Lof.A1no*e o' mL LCasC | |||
@, . [ Zj l_NA l | @, . [ Zj l_NA l | ||
[M-Z .. . l,NA I | |||
PtnSoNNE L E X PO5Umt5 | |||
[M-Z .. . l,NA | |||
... o.,,C..... m RI,'uge,3 ' ' , , ' l!*) | ... o.,,C..... m RI,'uge,3 ' ' , , ' l!*) | ||
L "^ | L "^ | ||
| Line 81: | Line 57: | ||
O I Ol 01 I NA - | O I Ol 01 I NA - | ||
g | g | ||
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08 FSI1E con 58OutNCE5 | 08 FSI1E con 58OutNCE5 | ||
* . N LOSS 084 OAnanGL TO F AcILif v . | * . N LOSS 084 OAnanGL TO F AcILif v . | ||
| Line 93: | Line 65: | ||
PUtteCIf? . | PUtteCIf? . | ||
@ elNA . | @ elNA . | ||
- l | - l ADOstso=At s ACTORS l @lu 1 es . | ||
O IT[qiy._ , | |||
ADOstso=At s ACTORS l @lu 1 es . | |||
O | |||
IT[qiy._ , | |||
3 s: -y | 3 s: -y | ||
,,,, Jacque Lingenfelter/Stan Batch (4197'259-5000, Ext. 251 8 0 02 0~ **4 034> | ,,,, Jacque Lingenfelter/Stan Batch (4197'259-5000, Ext. 251 8 0 02 0~ **4 034> | ||
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TOLEDO EDISON COMPANY | TOLEDO EDISON COMPANY | ||
, k./ | , k./ | ||
* DAVIS-BESSE UNIT ONE NL* CLEAR PO'ER STATION | * DAVIS-BESSE UNIT ONE NL* CLEAR PO'ER STATION SUPPLEMENTAL INFORMATION FOR LER NP-33-77-21 DATE OF EVENT: July 11, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRE' ICE: Failure of Containment Spray Pump 1-1 to meet pump head acceptance criteria. | ||
SUPPLEMENTAL INFORMATION FOR LER NP-33-77-21 | |||
DATE OF EVENT: July 11, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRE' ICE: Failure of Containment Spray Pump 1-1 to meet pump head acceptance criteria. | |||
e Conditions Prior to O'currene_e_: The plant was in Mode 4 with Power (MWT) = 0 | e Conditions Prior to O'currene_e_: The plant was in Mode 4 with Power (MWT) = 0 | ||
. and Load (M'K) = 0. | . and Load (M'K) = 0. | ||
Description of Occurrence: On July 11, 1977, at 0005 hours, Operations per- | Description of Occurrence: On July 11, 1977, at 0005 hours, Operations per- | ||
~ ~ " ~ ~ | ~ ~ " ~ ~ | ||
sonnel performed ST 5062.01, Containment Spray System Monthly Test, during which Containment Spray Pump 1-1 failed to meet the pump head acceptance cri-teria. The pump differential pressure _was 180.8 psid which is above the maxi-mum acceptance criteria of 179.5 psid. This placed the plant in the Action | sonnel performed ST 5062.01, Containment Spray System Monthly Test, during which Containment Spray Pump 1-1 failed to meet the pump head acceptance cri-teria. The pump differential pressure _was 180.8 psid which is above the maxi-mum acceptance criteria of 179.5 psid. This placed the plant in the Action Statement of Technical Specification 3.6.2.1. | ||
Statement of Technical Specification 3.6.2.1. | |||
h- | h- | ||
. Designation of Apparent Cause of Occurrence: After investigation, it was found | . Designation of Apparent Cause of Occurrence: After investigation, it was found that the suction pressure indicator, PI-1591 and flow transmitter, FT-1547 were out of calibration. This was the reason that the indicated pump performance data exceeded its acceptance criteria. | ||
that the suction pressure indicator, PI-1591 and flow transmitter, FT-1547 were out of calibration. This was the reason that the indicated pump performance data exceeded its acceptance criteria. | |||
Analysis of Occurrenca: Since the pump would have met its required flowrate under accident conditions, there was no threat to the health and safety of the i | Analysis of Occurrenca: Since the pump would have met its required flowrate under accident conditions, there was no threat to the health and safety of the i | ||
l public or station personnel. | l public or station personnel. | ||
Correct'ive Action: After recalibration of the pressure indicators, the surveil-lance test was performed at 1600 hours en .Miy 12, 1977, and the pump met the - - - - | Correct'ive Action: After recalibration of the pressure indicators, the surveil-lance test was performed at 1600 hours en .Miy 12, 1977, and the pump met the - - - - | ||
acceptance criteria. This removed the plant from the Action Statement of Techni-cal Specification 3.6.2.1. To prevent recurrence, the calibration frequency g will be increased as necessary to insure that these instruments remain within i their tolerances. | acceptance criteria. This removed the plant from the Action Statement of Techni-cal Specification 3.6.2.1. To prevent recurrence, the calibration frequency g will be increased as necessary to insure that these instruments remain within i their tolerances. | ||
Failure Data: No previous similar events have occurred. | Failure Data: No previous similar events have occurred. | ||
t | t | ||
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l' | l' | ||
._ . . _ . . _ _ _ . _ . _ . _ _ , . - . _ _ , _ _ . _ - _ . . _ _ . - - _ _ _ . - , . _ . _ . - _ . .}} | ._ . . _ . . _ _ _ . _ . _ . _ _ , . - . _ _ , _ _ . _ - _ . . _ _ . - - _ _ _ . - , . _ . _ . - _ . .}} | ||
Latest revision as of 01:26, 16 March 2020
| ML19326A568 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 08/04/1977 |
| From: | Batch S, Lingenfelter J TOLEDO EDISON CO. |
| To: | |
| Shared Package | |
| ML19326A527 | List: |
| References | |
| NUDOCS 8002040742 | |
| Download: ML19326A568 (2) | |
Text
- . . . - . . .
. t
,m
~
' O. ' ~
1.lCENSE E E'.'ENT R EPORT s
cominot stocs - Lj i f lj G
- ** t "' I L't"),g" LeCCNSC measuot a 3"," "g' l0;Oj-J 0101 Ni P FI-101 3l -l 4 11l1 l 1! 1; l 0l3 l
@]9IolH l DIB l Sill4. - 35 Jb .N Jo JPA C A t t Co# O te s cocett f aevaset a g gg m e ria s aC* oat cas t 0: com it i I 1L l LLs to t S i c i ..i : 03 :4 : 6, t1071,1,77 . 0i 8; 0 4,7 ; 7, si !4 '3r E' si 64 ss 2. is ao tvtuf of SCaiP1 TON g lDuring the Containment Spray System Monthly Surye111ance Testl Containment
> as so glSprayPump1-1failedtomeetpumpheadacceptancecriteria.l Pressure ;
a es a g lwas above the maximum acceptable limit. This is not a repetitive ;
7 es .
E i es Ioccurrence. (NP-33-77-21) . ;
ao
- l. I i
- I 5 '"'c' en CNdE'h"' old'Oryc",'",,'c, ,,,,a,.
@. l.N""I
$I >>
I I 2
NS in~.iT ~, ((U, ,i i R12 19 10 I
[NJ caust otScais tion g
l Suction pressure indicator and flow transmitter were out of calibration.
_ _ . _ l s
gg'Theywererecalibratedandthepumpthenmettheacceptancecriteria. u l
\ =
gl -
J s as M
I
- g"s#'
a s so tog a status pe's Yav DescovCav nESCnervoom I DI 01 1.A l (pj ( NA J 3 to s2 13 .4 .t 46 80 at ofNe'$NC auovast or acievetv Lof.A1no*e o' mL LCasC
@, . [ Zj l_NA l
[M-Z .. . l,NA I
PtnSoNNE L E X PO5Umt5
... o.,,C..... m RI,'uge,3 ' ' , , ' l!*)
L "^
~~
PtnSoNastt tNJumis J
munseC m nt sc a.ev som , .
O I Ol 01 I NA -
g
.i u --
08 FSI1E con 58OutNCE5
- . N LOSS 084 OAnanGL TO F AcILif v .
s vet otsc a se viom
@,VJ i.8^ ~,
. J -
PUtteCIf? .
@ elNA .
- l ADOstso=At s ACTORS l @lu 1 es .
O IT[qiy._ ,
3 s: -y
,,,, Jacque Lingenfelter/Stan Batch (4197'259-5000, Ext. 251 8 0 02 0~ **4 034>
~
~
m ~
~ -
s . .
TOLEDO EDISON COMPANY
, k./
- DAVIS-BESSE UNIT ONE NL* CLEAR PO'ER STATION SUPPLEMENTAL INFORMATION FOR LER NP-33-77-21 DATE OF EVENT: July 11, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRE' ICE: Failure of Containment Spray Pump 1-1 to meet pump head acceptance criteria.
e Conditions Prior to O'currene_e_: The plant was in Mode 4 with Power (MWT) = 0
. and Load (M'K) = 0.
Description of Occurrence: On July 11, 1977, at 0005 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />, Operations per-
~ ~ " ~ ~
sonnel performed ST 5062.01, Containment Spray System Monthly Test, during which Containment Spray Pump 1-1 failed to meet the pump head acceptance cri-teria. The pump differential pressure _was 180.8 psid which is above the maxi-mum acceptance criteria of 179.5 psid. This placed the plant in the Action Statement of Technical Specification 3.6.2.1.
h-
. Designation of Apparent Cause of Occurrence: After investigation, it was found that the suction pressure indicator, PI-1591 and flow transmitter, FT-1547 were out of calibration. This was the reason that the indicated pump performance data exceeded its acceptance criteria.
Analysis of Occurrenca: Since the pump would have met its required flowrate under accident conditions, there was no threat to the health and safety of the i
l public or station personnel.
Correct'ive Action: After recalibration of the pressure indicators, the surveil-lance test was performed at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> en .Miy 12, 1977, and the pump met the - - - -
acceptance criteria. This removed the plant from the Action Statement of Techni-cal Specification 3.6.2.1. To prevent recurrence, the calibration frequency g will be increased as necessary to insure that these instruments remain within i their tolerances.
Failure Data: No previous similar events have occurred.
t
~(
l'
._ . . _ . . _ _ _ . _ . _ . _ _ , . - . _ _ , _ _ . _ - _ . . _ _ . - - _ _ _ . - , . _ . _ . - _ . .