ML19319B739: Difference between revisions
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{{#Wiki_filter:_ . -_ | {{#Wiki_filter:_ . -_ | ||
e s | e s | ||
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O | O | ||
* 1.lCENSEE EVENT REPORT d co~ision stoCx L, L J l i i l_J. | * 1.lCENSEE EVENT REPORT d co~ision stoCx L, L J l i i l_J. | ||
''t.w.' ' . . . . . . . . . . , . . . ' ','J .? ' 5,"J e~i | ''t.w.' ' . . . . . . . . . . , . . . ' ','J .? ' 5,"J e~i ggi o in i o LP. t s Ilj (0 .01.] 0! 0 ! ::1 PiFl-t01 3l 'ei1J lj 1 1g I g | ||
ggi o in i o LP. t s Ilj (0 .01.] 0! 0 ! ::1 PiFl-t01 3l 'ei1J lj 1 1g I g | |||
, A . ... /1 *S * ' ".'..*.t'N noe... vo. . .s...... 0 o., ... | , A . ... /1 *S * ' ".'..*.t'N noe... vo. . .s...... 0 o., ... | ||
fc1Dco L I 1L j'i lTT [TEL1li1,05 1 0 t..;O! 3i4 1 Swi 1 i O f 712131717 l 101811 171 7 17i | fc1Dco L I 1L j'i lTT [TEL1li1,05 1 0 t..;O! 3i4 1 Swi 1 i O f 712131717 l 101811 171 7 17i | ||
Line 34: | Line 29: | ||
t va n t ut Sc r'i* t ross | t va n t ut Sc r'i* t ross | ||
[g7]l Electrolyte level in station batteries exceeded. maximum level'due to | [g7]l Electrolyte level in station batteries exceeded. maximum level'due to | ||
, s, '' | , s, '' | ||
(gi)[ liquid expansion at high ambient temperatures. The excess el'ectrolyte . | (gi)[ liquid expansion at high ambient temperatures. The excess el'ectrolyte . | ||
t9 | t9 P | ||
g-):was removed and the station was removed from the Action Statement of-- ] | |||
> a5 g | > a5 g | ||
[f,UITechnical Specification 3.8.7.4. (NF-33-77-29) . | [f,UITechnical Specification 3.8.7.4. (NF-33-77-29) . | ||
Line 47: | Line 38: | ||
!.flcsL. | !.flcsL. | ||
t? | t? | ||
4 | |||
'n' A" 's'#!i? e nw. n~. . e on. en",l?a'"' | 'n' A" 's'#!i? e nw. n~. . e on. en",l?a'"' | ||
..l.m;";.>c~8's"[' | ..l.m;";.>c~8's"[' | ||
; | ; | ||
(@(E 1 C 1 LCJ tB # TtT !RJL @ l G! 'l ; Q, 7 89 .0 It n2 i; 43 44 4; ,, | (@(E 1 C 1 LCJ tB # TtT !RJL @ l G! 'l ; Q, 7 89 .0 It n2 i; 43 44 4; ,, | ||
Cats 1T ot1CRePTION g ; The electrolyte near the maximum level is required to pass the battery | Cats 1T ot1CRePTION g ; The electrolyte near the maximum level is required to pass the battery | ||
; | ; | ||
d['surveillancetest. Present Technical Specifications do not allowfortherj- | d['surveillancetest. Present Technical Specifications do not allowfortherj- | ||
'f'malexpansionwiththebatteries.normallyat this maximum level. , | 'f'malexpansionwiththebatteries.normallyat this maximum level. , | ||
u e, ,a | u e, ,a | ||
Line 69: | Line 51: | ||
IE0 3 | IE0 3 | ||
LBJ 9 | LBJ 9 | ||
t010101 ts 42 I.NA33 | t010101 ts 42 I.NA33 e4 i tJ 4y D | ||
t NA 4 go AF.''.t'.% . . , | |||
e4 i tJ 4y D | |||
t NA 4 go | |||
AF.''.t'.% . . , | |||
.ef t 8 At( O o.e c.at . eL ~ ASC, .wovm , or a C..vs t y L O C A 1.O** OF .tLtA,C | .ef t 8 At( O o.e c.at . eL ~ ASC, .wovm , or a C..vs t y L O C A 1.O** OF .tLtA,C | ||
,3 (_3 .1.0.] I NA l l J | ,3 (_3 .1.0.] I NA l l J | ||
Line 85: | Line 63: | ||
,2 i e'Y7,'h ;".'n~~" | ,2 i e'Y7,'h ;".'n~~" | ||
: 8. .. . | : 8. .. . | ||
j Or F 5eit CON 5t orf.vCts i> t NA L4 4 J | |||
j | LoS5 ore DawaGt to a ActLeiv evet et,c..e e ow 8, .i rzJ 5.NA e | ||
Or F 5eit CON 5t orf.vCts i> t NA L4 4 J | |||
LoS5 ore DawaGt to a ActLeiv evet et,c..e e ow 8, .i rzJ | |||
5.NA e | |||
. ~ | . ~ | ||
I. . | I. . | ||
Pt#0 LICIT V E, E. L, NA i | Pt#0 LICIT V E, E. L, NA i ADOttION AL 8 4Clurgs i | ||
ADOttION AL 8 4Clurgs i | |||
i NA - | i NA - | ||
l e, | l e, | ||
m h,I, ----- .. ... _ ... .. _ .. ._j , | m h,I, ----- .. ... _ ... .. _ .. ._j , | ||
b NAML Jacque 1.iugenic! t.er/ Tom Beeler ppggg (4.1,9) 259-5000. Ext. 151 | b NAML Jacque 1.iugenic! t.er/ Tom Beeler ppggg (4.1,9) 259-5000. Ext. 151 8001270 [77 | ||
8001270 [77 | |||
-- ,.m | -- ,.m | ||
s | s | ||
\. TOLEDO EDISCN CONPANY | \. TOLEDO EDISCN CONPANY | ||
' DAVIS-BESSE UNIT ONE NUCLEAR POWE.R STATION SUPPLEMENTAL INFORMATION FOR LER NP-33-77-29 DATE OF EVENT: July 23, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Electrolyte leve. above present Technical Specifi-cations for station batteries IP, IN, 2P and 2N. | ' DAVIS-BESSE UNIT ONE NUCLEAR POWE.R STATION SUPPLEMENTAL INFORMATION FOR LER NP-33-77-29 DATE OF EVENT: July 23, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Electrolyte leve. above present Technical Specifi-cations for station batteries IP, IN, 2P and 2N. | ||
Line 114: | Line 81: | ||
This placed the station into the Action Statement of Technical Specification 3.8.2.4 which requires that one (1) 250/125 volt DC M.C.C. and two (2) 125 volt battery banks and chargers be energized and operable. | This placed the station into the Action Statement of Technical Specification 3.8.2.4 which requires that one (1) 250/125 volt DC M.C.C. and two (2) 125 volt battery banks and chargers be energized and operable. | ||
O | O | ||
\ Designation of Aeparent Cause of Occurrence: The high ambient temperature which occurred on this date was in excess of 350C (95 F) which caused an above normal cell temperature in the batteries and due to fluid expansion, an excess amount of electrolyte. | \ Designation of Aeparent Cause of Occurrence: The high ambient temperature which occurred on this date was in excess of 350C (95 F) which caused an above normal cell temperature in the batteries and due to fluid expansion, an excess amount of electrolyte. | ||
The electrolyte near the maximum level is required to pass the batterv surveil-lance test. Present Technical Specifications do not allow for thermal expan-sion with the batteries normally at this maximum 'evel. | The electrolyte near the maximum level is required to pass the batterv surveil-lance test. Present Technical Specifications do not allow for thermal expan-sion with the batteries normally at this maximum 'evel. |
Revision as of 06:33, 1 February 2020
ML19319B739 | |
Person / Time | |
---|---|
Site: | Davis Besse ![]() |
Issue date: | 08/17/1977 |
From: | Beeler T, Lingenfelter J TOLEDO EDISON CO. |
To: | |
Shared Package | |
ML19319B603 | List: |
References | |
NUDOCS 8001270194 | |
Download: ML19319B739 (2) | |
Text
_ . -_
e s
\
O
- 1.lCENSEE EVENT REPORT d co~ision stoCx L, L J l i i l_J.
t.w.' ' . . . . . . . . . . , . . . ' ','J .? ' 5,"J e~i ggi o in i o LP. t s Ilj (0 .01.] 0! 0 ! ::1 PiFl-t01 3l 'ei1J lj 1 1g I g
, A . ... /1 *S * ' ".'..*.t'N noe... vo. . .s...... 0 o., ...
fc1Dco L I 1L j'i lTT [TEL1li1,05 1 0 t..;O! 3i4 1 Swi 1 i O f 712131717 l 101811 171 7 17i
)9 sr 69 34 is -* W
~~
t va n t ut Sc r'i* t ross
[g7]l Electrolyte level in station batteries exceeded. maximum level'due to
, s,
(gi)[ liquid expansion at high ambient temperatures. The excess el'ectrolyte .
t9 P
g-):was removed and the station was removed from the Action Statement of-- ]
> a5 g
[f,UITechnical Specification 3.8.7.4. (NF-33-77-29) .
'* m
!.flcsL.
t?
4
'n' A" 's'#!i? e nw. n~. . e on. en",l?a'"'
..l.m;";.>c~8's"['
(@(E 1 C 1 LCJ tB # TtT !RJL @ l G! 'l ; Q, 7 89 .0 It n2 i; 43 44 4; ,,
Cats 1T ot1CRePTION g ; The electrolyte near the maximum level is required to pass the battery
d['surveillancetest. Present Technical Specifications do not allowfortherj-
'f'malexpansionwiththebatteries.normallyat this maximum level. ,
u e, ,a
't.ex,- s .o-. ...... ,,A ., r,rn.a: .. . . o . . . . m c . . . , , ,,
IE0 3
LBJ 9
t010101 ts 42 I.NA33 e4 i tJ 4y D
t NA 4 go AF..t'.% . . ,
.ef t 8 At( O o.e c.at . eL ~ ASC, .wovm , or a C..vs t y L O C A 1.O** OF .tLtA,C
,3 (_3 .1.0.] I NA l l J
.A ;
e io si 45 n.
PtnSomNtt e EmPoSUMES
- .ww e.. . ,,et or ,c ..e v.o re i
l 01 01 01 (Zj t NA I
> a$ o 2 h c P t A 50.e*.! L era Jtis a s ( $
,2 i e'Y7,'h ;".'n~~"
- 8. .. .
j Or F 5eit CON 5t orf.vCts i> t NA L4 4 J
LoS5 ore DawaGt to a ActLeiv evet et,c..e e ow 8, .i rzJ 5.NA e
. ~
I. .
Pt#0 LICIT V E, E. L, NA i ADOttION AL 8 4Clurgs i
i NA -
l e,
m h,I, ----- .. ... _ ... .. _ .. ._j ,
b NAML Jacque 1.iugenic! t.er/ Tom Beeler ppggg (4.1,9) 259-5000. Ext. 151 8001270 [77
-- ,.m
s
\. TOLEDO EDISCN CONPANY
' DAVIS-BESSE UNIT ONE NUCLEAR POWE.R STATION SUPPLEMENTAL INFORMATION FOR LER NP-33-77-29 DATE OF EVENT: July 23, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Electrolyte leve. above present Technical Specifi-cations for station batteries IP, IN, 2P and 2N.
Conditions Prior to occurrence: The plant was in Mode 5 with Power (MWT) = 0 and Load (MWE) = 0.
Description of Occurrence: At 1435 hours0.0166 days <br />0.399 hours <br />0.00237 weeks <br />5.460175e-4 months <br /> on July 23, 1977, when reviewing the Quarterly Battery Surveillance Test (ST 5084.01) data, the Maintenance Fore =an discovered that the battery electrolyte was above the maxi =um acceptable level.
This placed the station into the Action Statement of Technical Specification 3.8.2.4 which requires that one (1) 250/125 volt DC M.C.C. and two (2) 125 volt battery banks and chargers be energized and operable.
O
\ Designation of Aeparent Cause of Occurrence: The high ambient temperature which occurred on this date was in excess of 350C (95 F) which caused an above normal cell temperature in the batteries and due to fluid expansion, an excess amount of electrolyte.
The electrolyte near the maximum level is required to pass the batterv surveil-lance test. Present Technical Specifications do not allow for thermal expan-sion with the batteries normally at this maximum 'evel.
Analysis of Occurrence: Since an excess amount of electrolyte we ald not pre-vent the batteries from meeting short term power requirements, and since the amount of excess electrolyte was removed, there was no danger to the health and safety of the public or ta station persone.cl.
Corrective Action: The excess electrolyte was siphoned from the affected battery cells and new data readings were obtained. At 1900 hours0.022 days <br />0.528 hours <br />0.00314 weeks <br />7.2295e-4 months <br /> on July 23, 1977, the batteries were declared operable. This removed the station frem Action Statement of Technical Specification 3.8.2.4. Efforts are being made to revise the Technical Specification for limits that include electrolyte (spansion.
'~' Failure Data: No previous similar events have occurred.
m
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