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| issue date = 08/14/1980 | | issue date = 08/14/1980 | ||
| title = LER 80-024/03L-0 for Dresden, Unit 2 Re Drywell Oxygen Concentration Indication Failed Downscale in Violation of Tech. Spec. 3.7.A.6.d | | title = LER 80-024/03L-0 for Dresden, Unit 2 Re Drywell Oxygen Concentration Indication Failed Downscale in Violation of Tech. Spec. 3.7.A.6.d | ||
| author name = Scott D | | author name = Scott D | ||
| author affiliation = Commonwealth Edison Co | | author affiliation = Commonwealth Edison Co | ||
| addressee name = Keppler J | | addressee name = Keppler J | ||
| addressee affiliation = NRC/RGN-III | | addressee affiliation = NRC/RGN-III | ||
| docket = 05000237 | | docket = 05000237 | ||
Line 17: | Line 17: | ||
=Text= | =Text= | ||
{{#Wiki_filter:Commonwealedi,sori Dresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephooe nnttt1 fl1l &OPl August 14, 1980 DJS LTR 1180-5 James G. Keppler, Regional Director Directorate of Regulatory Operations | {{#Wiki_filter:Commonwealedi,sori Dresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephooe 815/94~~l\l\W nnttt1 fl1l &OPl at~ August 14, 1980 DJS LTR 1180-5 James G. Keppler, Regional Director Directorate of Regulatory Operations - Region III U.S. Nuclear Regulatory Conunission 799 Roosevelt Road Glen Ellyn, IL 60137 | ||
-Region III U.S. Nuclear Regulatory Conunission 799 Roosevelt Road Glen Ellyn, IL 60137 | . ~~* | ||
* being submit.ted to your off ice in accordance with '-D.r.,g.§,defl<>-ifu"clear Power Station Technical, Specification 6. 6. B. 2. (b), condl.tions leading to operation in a degraded mode permitted by a .limiting condition for operation or shutdown required by a **limiting condition for operation. | Reportable Occurrence Report lf.80-24/03L-0, Docket)tdS0-237 is,......,./ | ||
DJS:lcg; | * being submit.ted to your off ice in accordance with '-D.r.,g.§,defl<>-ifu"clear Power Station Technical, Specification 6. 6. B. 2. (b), condl.tions leading to operation in a degraded mode permitted by a .limiting condition for operation or p~ant shutdown required by a **limiting condition for operation. | ||
. Enclosure | Station Superintendent Dresden Nuclear Power Station DJS:lcg; | ||
& Enforcement Director of Management Information | . Enclosure cc: Director of Inspection & Enforcement Director of Management Information & Program Control U.S. NRC Document Management Branch File/NRC | ||
& Program Control U.S. NRC Document Management Branch File/NRC | .*4o::/. | ||
.*4o::/. 2 \ | ~UG 2 \ .~ | ||
EVENT REPORT . | '7"71 | ||
BLOCK: I I 1-r /0 ' (PLEASE PRINT OR TYPE AL.EQUIREO INFORMATION) | ._, . ~., _, ~CENSEE EVENT REPORT . | ||
~tN"i-'~dL BLOCK: I 1!--~~-----~--~-----6\..!.) | |||
---. | I 1-r/0 ' ' (PLEASE PRINT OR TYPE AL.EQUIREO INFORMATION) ~. | ||
- | E . 8 I I I 1 ID IR Is 9 . LICENSEE CODE i-2' 1010 | ||
. 14 15 | |||
'° f I - I 0 I 0 I 0 I 0 I 0 I- I0 I0 IQ)l4 LICENSE NUMBER 25 26 11 11 11 LICENSE TYPE 11 101 I I© 30 57 CAT 58 a&2. -----~- -- - . | |||
@ . . I Dtiring normal operations, drywell oxygen concentration indication failed downscale in OlJ I violation of Dresden Tech. Spec .. 3.7.A.6.d. | U-2.J8 ~~~~~ -~©Io 1s 60 61 10 10 DOCKET NUMBER pf p f 101 o I 7 12 11 ! 8 Ib IG)I oI s I 1 l s I 8 I o I© 68 69 . . EVENT DATE 74 75 REPORT DATE 80 .* | ||
Safetyconsequences were minimal because | EVENT DESCRIPTION A~D PROBABLE CONSEQUENCES @ . . | ||
.. readings taken on a portable | I Dtiring normal operations, drywell oxygen concentration indication failed downscale in OlJ I violation of Dresden Tech. Spec .. 3.7.A.6.d. Safetyconsequences were minimal because I drywell oxygen .conc*entration was ':well below ,.4% before indication failed and oxygen | ||
.analyzer "were available upon *request. | *I concentration .. readings taken on a portable .analyzer "were available upon *request. | ||
I Similar events:. | I Similar events:. 80-7 /031-0, .80-1/031...:0 | ||
80-7 /031-0, .80-1/031...:0 | * 80 | ||
* .SYSTEM | .SYSTEM CAUSE CAUSE COMP. VALVE e | ||
.SUBCODE | CODE CODE SUBCOOE COMPONENT CODE .SUBCODE .SUBCODE m:r 8 11 9 | ||
'OCCURRENCE | ID I@ ~@-L~@ | ||
*REPORT 'REVISION* | 10* 11 12 J13 r_1 N 1s 1T 1R 1u 1 18 | ||
. REPORT NO. . CODE 'TYPE I I *yo | ~ | ||
.* | 19 t:J@* | ||
.20 SEQUENTIAL 'OCCURRENCE *REPORT 'REVISION* | |||
' | 6 LER/RO *cEVENTYEAR . REPORT NO. . CODE 'TYPE | ||
~o. | |||
~ REPORT NUMBER . | |||
.... ,*high :temperature. | I 21 8 0 I I . | ||
of the oxygen . I DIJ ,I analyzer cell caused *by faiiure of a *temperature sensing *switch. | 22 I I *yo | ||
'The temperature | .23 ' -24 ' | ||
1 2 *1 4 | |||
* Inc., .No. lS00-0, was *.rep'laced cbntroi accurate | ~1 | ||
* | .26 J7[ - | ||
* indica tiori.::. | ' ' .27 | ||
resulted. | *1*0 13 1 | ||
:28 29 ' | |||
. tJQ\ METHOD OF * . STATUS % POWER . .QT,11ER STATUS \::;:/ . DISCOVERY QbDISCOVERY. | t.:J | ||
.30 | |||
*'1=J | |||
____ | '.31 | ||
.CONTENT Q\ . | .. ~* | ||
' 32 1i.r~f@Tf6'1@ | |||
33 34 ' | |||
-r:;;:;., | 0 Vifr@ **~r1~ .* ,~'r~ I~ ~I 'iJf~1~ | ||
NUMBER {.;::;\TYPE. | 35 ,. ' 36 .37 0 | ||
t:;;;\ DESCRIPTION | ' *40 ' 41 | ||
'1~;1@*~~~1~ | |||
N/A 9 11 12 LOSS OF OR DAMAGE TO FACILITY | *,42 ' -43 44 COMPONENT | ||
{43) TYPE | 'MANUFACTURER.*..- - . | ||
I F I 0' t 8 11. | |||
47 | |||
. CAUSE DESCRIPTION AND CORRECTIVE ACTIONS.@* . | |||
1 I 0 I I The reason for the downscale reading .was -excessive'.' .... ,*high :temperature. of the oxygen . I DIJ ,I analyzer cell caused *by faiiure of a *temperature sensing *switch. 'The temperature ~swi<tth,.1 IIJ I Fen~al: | |||
* Inc., .No. lS00-0, was *.rep'laced ~. *correet~~temperatu:re cbntroi ~and accurate | |||
* J:D I oxygen *indica tiori.::. resulted. | |||
El.a 9 1 80 | |||
. FACILITY . tJQ\ METHOD OF * . ~ | |||
~ | |||
IIJ STATUS | |||
~@ I | |||
% POWER 01 61 71@1 | |||
. .QT,11ER STATUS N/A | |||
\::;:/ | |||
I | |||
. DISCOVERY QbDISCOVERY. DESCRIPTION | |||
.l~J@_l_op_e_r_a_to_r_._s_e_rv_a_t_i_on_ _ _ _. _ _ ____,I | |||
' 8 9 10 12 1'3 ,44 ,_45 ,"46 80 | |||
:ACTIVITY .CONTENT Q\ ~ . | |||
r;;RELEASEO OF RELEASE AMOYNT OF ACTIVITY LOCATION OF RELEASE ~ | |||
~ L.~J@ Lll@)I NA I -- .___N_IA_ _ _ _ _ _ _ _ ___,,_ _...... t ____ | |||
' 8 9 10 11 44 45 80 PERSONNEL EXPOSURES -r:;;:;., | |||
NUMBER {.;::;\TYPE. t:;;;\ DESCRIPTION | |||
~jOIOIOl~~------N_J_A___________________~ | |||
8 9 11 12 13 PERSONNEL INJURIES t:'::\ | |||
NUMBER DESCRIPTION~ | |||
1010101@ N/A 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY {43) | |||
Llil TYPE L_:_j@ | |||
DESCRIPTION | |||
~/ | |||
. A 8 9 10 80 PUBLICITY f,;;;\ NRC USE ONLY ISSUEOt,;:;\ DESCRIPTION~ C> | |||
III UJ6 N/A . I I I. I I I I I I I I I I~ | |||
8 9 10 68 69 ' so.; | |||
0}} |
Latest revision as of 08:32, 24 February 2020
ML17252B516 | |
Person / Time | |
---|---|
Site: | Dresden ![]() |
Issue date: | 08/14/1980 |
From: | Scott D Commonwealth Edison Co |
To: | James Keppler NRC/RGN-III |
References | |
DJS LTR 80-5 LER 80-024/03L-0 | |
Download: ML17252B516 (2) | |
Text
Commonwealedi,sori Dresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephooe 815/94~~l\l\W nnttt1 fl1l &OPl at~ August 14, 1980 DJS LTR 1180-5 James G. Keppler, Regional Director Directorate of Regulatory Operations - Region III U.S. Nuclear Regulatory Conunission 799 Roosevelt Road Glen Ellyn, IL 60137
. ~~*
Reportable Occurrence Report lf.80-24/03L-0, Docket)tdS0-237 is,......,./
- being submit.ted to your off ice in accordance with '-D.r.,g.§,defl<>-ifu"clear Power Station Technical, Specification 6. 6. B. 2. (b), condl.tions leading to operation in a degraded mode permitted by a .limiting condition for operation or p~ant shutdown required by a **limiting condition for operation.
Station Superintendent Dresden Nuclear Power Station DJS:lcg;
. Enclosure cc: Director of Inspection & Enforcement Director of Management Information & Program Control U.S. NRC Document Management Branch File/NRC
.*4o::/.
~UG 2 \ .~
'7"71
._, . ~., _, ~CENSEE EVENT REPORT .
~tN"i-'~dL BLOCK: I 1!--~~-----~--~-----6\..!.)
I 1-r/0 ' ' (PLEASE PRINT OR TYPE AL.EQUIREO INFORMATION) ~.
E . 8 I I I 1 ID IR Is 9 . LICENSEE CODE i-2' 1010
. 14 15
'° f I - I 0 I 0 I 0 I 0 I 0 I- I0 I0 IQ)l4 LICENSE NUMBER 25 26 11 11 11 LICENSE TYPE 11 101 I I© 30 57 CAT 58 a&2. -----~- -- - .
U-2.J8 ~~~~~ -~©Io 1s 60 61 10 10 DOCKET NUMBER pf p f 101 o I 7 12 11 ! 8 Ib IG)I oI s I 1 l s I 8 I o I© 68 69 . . EVENT DATE 74 75 REPORT DATE 80 .*
EVENT DESCRIPTION A~D PROBABLE CONSEQUENCES @ . .
I Dtiring normal operations, drywell oxygen concentration indication failed downscale in OlJ I violation of Dresden Tech. Spec .. 3.7.A.6.d. Safetyconsequences were minimal because I drywell oxygen .conc*entration was ':well below ,.4% before indication failed and oxygen
- I concentration .. readings taken on a portable .analyzer "were available upon *request.
I Similar events:. 80-7 /031-0, .80-1/031...:0
- 80
.SYSTEM CAUSE CAUSE COMP. VALVE e
CODE CODE SUBCOOE COMPONENT CODE .SUBCODE .SUBCODE m:r 8 11 9
ID I@ ~@-L~@
10* 11 12 J13 r_1 N 1s 1T 1R 1u 1 18
~
19 t:J@*
.20 SEQUENTIAL 'OCCURRENCE *REPORT 'REVISION*
6 LER/RO *cEVENTYEAR . REPORT NO. . CODE 'TYPE
~o.
~ REPORT NUMBER .
I 21 8 0 I I .
22 I I *yo
.23 ' -24 '
1 2 *1 4
~1
.26 J7[ -
' ' .27
- 1*0 13 1
- 28 29 '
t.:J
.30
- '1=J
'.31
.. ~*
' 32 1i.r~f@Tf6'1@
33 34 '
0 Vifr@ **~r1~ .* ,~'r~ I~ ~I 'iJf~1~
35 ,. ' 36 .37 0
' *40 ' 41
'1~;1@*~~~1~
- ,42 ' -43 44 COMPONENT
'MANUFACTURER.*..- - .
I F I 0' t 8 11.
47
. CAUSE DESCRIPTION AND CORRECTIVE ACTIONS.@* .
1 I 0 I I The reason for the downscale reading .was -excessive'.' .... ,*high :temperature. of the oxygen . I DIJ ,I analyzer cell caused *by faiiure of a *temperature sensing *switch. 'The temperature ~swi<tth,.1 IIJ I Fen~al:
- Inc., .No. lS00-0, was *.rep'laced ~. *correet~~temperatu:re cbntroi ~and accurate
- J:D I oxygen *indica tiori.::. resulted.
El.a 9 1 80
. FACILITY . tJQ\ METHOD OF * . ~
~
IIJ STATUS
~@ I
% POWER 01 61 71@1
. .QT,11ER STATUS N/A
\::;:/
I
. DISCOVERY QbDISCOVERY. DESCRIPTION
.l~J@_l_op_e_r_a_to_r_._s_e_rv_a_t_i_on_ _ _ _. _ _ ____,I
' 8 9 10 12 1'3 ,44 ,_45 ,"46 80
- ACTIVITY .CONTENT Q\ ~ .
r;;RELEASEO OF RELEASE AMOYNT OF ACTIVITY LOCATION OF RELEASE ~
~ L.~J@ Lll@)I NA I -- .___N_IA_ _ _ _ _ _ _ _ ___,,_ _...... t ____
' 8 9 10 11 44 45 80 PERSONNEL EXPOSURES -r:;;:;.,
NUMBER {.;::;\TYPE. t:;;;\ DESCRIPTION
~jOIOIOl~~------N_J_A___________________~
8 9 11 12 13 PERSONNEL INJURIES t:'::\
NUMBER DESCRIPTION~
1010101@ N/A 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY {43)
Llil TYPE L_:_j@
DESCRIPTION
~/
. A 8 9 10 80 PUBLICITY f,;;;\ NRC USE ONLY ISSUEOt,;:;\ DESCRIPTION~ C>
III UJ6 N/A . I I I. I I I I I I I I I I~
8 9 10 68 69 ' so.;
0