ML19323G629: Difference between revisions
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H nc F O R D.1.7,6 U. S. NUCLE AR REGUL ATORY COMMI5510?J l1715 LICENSEE EVENT REPORT EXH1 BIT A CoNiitOL CLOC*:- [ l l l ! l lh 6 (PLEt.$E PRINT OR TYPE ALL CEOUIREO INFon?.*ATICN) | H nc F O R D.1.7,6 U. S. NUCLE AR REGUL ATORY COMMI5510?J l1715 LICENSEE EVENT REPORT EXH1 BIT A CoNiitOL CLOC*:- [ l l l ! l lh 6 (PLEt.$E PRINT OR TYPE ALL CEOUIREO INFon?.*ATICN) | ||
I,oIilITlN!S!NlPI1l@ul0 | I,oIilITlN!S!NlPI1l@ul0 | ||
. , t.u ,a. tum .4 l 0 l- 10 lo lo <.e uu ~.c j_n.u101 I n10 a al@l 411 l 1l Il1 o w.a 1,,e u l@lo--@ I ! | . , t.u ,a. tum .4 l 0 l- 10 lo lo <.e uu ~.c j_n.u101 I n10 a al@l 411 l 1l Il1 o w.a 1,,e u l@lo--@ I ! | ||
CO*rT | CO*rT lotil sM LL_J@l 01 SIO I o 'O 13 I 217 l@l0 itvEr,TDATE s I l l si a l ot@l o i REpQTIT s12 DAT I 81 si #3al@ | ||
F 4 f,J (,1 ;,,,4 4 E f r.u'.'2 f a s4 f. J 74 il E EVta.T DCCCRIPTIO'J AND PAO 3 ASLE CONSECUENCES h W d gat 0100 CDST with Unit 1 in Mode 3, it was discovered that the test switche,p io ig g on the containm'ent purge exh'aust radiation monitors were in the test oositib lo l4 l Imaking the monitors inoperable (TS LCO 3.3.3.1 reouires one monitor ! | |||
lotil sM LL_J@l 01 SIO I o 'O 13 I 217 l@l0 itvEr,TDATE s I l l si a l ot@l o i REpQTIT s12 DAT I 81 si #3al@ | O i n i ., i ioperable in all modes) caking them unable to provide a containment vent i o p, ; lisolation signal. Since Unit I had not yet achieved initial criticality I f o lil l there were no radiation releases. Therefore there was no dancer to the I o ., ih ealth and safety of the public. t Sv 5 f f '.' C AU: t CALSt CO'.'' | ||
F 4 f,J (,1 ;,,,4 4 E f r.u'.'2 f a s4 f. J 74 il E EVta.T DCCCRIPTIO'J AND PAO 3 ASLE CONSECUENCES h W d gat 0100 CDST with Unit 1 in Mode 3, it was discovered that the test switche,p | |||
io ig g on the containm'ent purge exh'aust radiation monitors were in the test oositib lo l4 l Imaking the monitors inoperable (TS LCO 3.3.3.1 reouires one monitor ! | |||
O i n i ., i ioperable in all modes) caking them unable to provide a containment vent i o p, ; lisolation signal. Since Unit I had not yet achieved initial criticality I f o lil l there were no radiation releases. Therefore there was no dancer to the I o ., ih ealth and safety of the public. t | |||
Sv 5 f f '.' C AU: t CALSt CO'.'' | |||
CODE vatvt Co E $UJC005 CO*.*70?.E *4 T CODE SUSCCDE SusCODI - | CODE vatvt Co E $UJC005 CO*.*70?.E *4 T CODE SUSCCDE SusCODI - | ||
io!,1 7 8 9 l Ml cl@ [A J@ [J@ l IlN l S l TlR l Ul@ [Ej@ [Ej @ | |||
80 11 12 13 la 19 20 SEOl'f 8.TI AL OCCUongNCE a s soce T R EVIS109 EvtNf vtaR 8'E POH Y ?.0. C001 TYPE *O | 80 11 12 13 la 19 20 SEOl'f 8.TI AL OCCUongNCE a s soce T R EVIS109 EvtNf vtaR 8'E POH Y ?.0. C001 TYPE *O O ."t f * *Oj.l.L*' I l8 10 l [ _.] I O I4 I 8 l L:, a n 2 a M, 2 | ||
O ."t f * *Oj.l.L*' I l8 10 l [ _.] I O I4 I 8 l | |||
L:, a n 2 a M, 2 | |||
10 2 | 10 2 | ||
l 1,i 2 | l 1,i 2 | ||
LT J n 1.! | LT J n 1.! | ||
J LQJ 3: | J LQJ 3: | ||
~ %'r.'t9 '.$?! c'Nt.Mr 'IMB3W ubuns ^"a'',"r?!s' s rEn1 Os "Tu?.837 ' ..ff,'fsu'a'r R e Lx.J8l1J@ | |||
~ %'r.'t9 '.$?! c'Nt.Mr 'IMB3W ubuns ^"a'',"r?!s' s rEn1 Os "Tu?.837 ' ..ff,'fsu'a'r R | |||
e Lx.J8l1J@ | |||
JJ JS LHJ@ | JJ JS LHJ@ | ||
3a Laj@ | 3a Laj@ | ||
| Line 63: | Line 39: | ||
[TTq l same time. Upon discovery the radiation monitors were ir-mediately re- 1 IiI>lI turned opernhie. I I i i .i l l I | [TTq l same time. Upon discovery the radiation monitors were ir-mediately re- 1 IiI>lI turned opernhie. I I i i .i l l I | ||
, Ii le I ! l | , Ii le I ! l | ||
.o ST ' * .POWC T1 OTHCR$fATU3 , ' , 0e 8 DiSCovtnv att n,Pr.01 | .o ST ' * .POWC T1 OTHCR$fATU3 , ' , 0e 8 DiSCovtnv att n,Pr.01 | ||
~ | ~ | ||
FTTl LnJ@ 1010 l OJ@l " " | FTTl LnJ@ 1010 l OJ@l " " | ||
N/A I [Hj@l Operator observation I | N/A I [Hj@l Operator observation I | ||
%'r, v,, v Cs.f i e.T | %'r, v,, v Cs.f i e.T | ||
. 4 u.. .cn es etteer tocariov cr nEtCast @ | . 4 u.. .cn es etteer tocariov cr nEtCast @ | ||
li Ir I4 LaJ | li Ir I4 LaJ | ||
| Line 78: | Line 50: | ||
1 tt n/A4 ou .T or ACTivitv 44 | 1 tt n/A4 ou .T or ACTivitv 44 | ||
-l @ l 43 N/A l IJ | -l @ l 43 N/A l IJ | ||
.c n. r. 0 t . con.e | .c n. r. 0 t . con.e pp1lo"fd'lOi@$Of""'"9E/A l | ||
pp1lo"fd'lOi@$Of""'"9E/A l | |||
,0.w.. . l',..,JI,a " | ,0.w.. . l',..,JI,a " | ||
... . . u n or u.n., n m @ | ... . . u n or u.n., n m @ | ||
| Line 92: | Line 59: | ||
^ | ^ | ||
l'l!LEJSL | l'l!LEJSL | ||
,v vi,, v N/A I | |||
,v vi,, v N/A | |||
I | |||
, . , ,,,,,..r. | , . , ,,,,,..r. | ||
S unc uy ,,nt , | S unc uy ,,nt , | ||
,f FTil L., al.5l. | ,f FTil L., al.5l. | ||
N/A I IIIIII!'III!l | N/A I IIIIII!'III!l | ||
. ,o | . ,o | ||
: c. <. 3 - | : c. <. 3 - | ||
navi Or enu r.cu, Getry W. Gault ,n e,y , , (615) 842-0295 mm | navi Or enu r.cu, Getry W. Gault ,n e,y , , (615) 842-0295 mm | ||
* 8006060903 o a. | * 8006060903 o a. | ||
o xx. | o xx. | ||
. Tenn2ss:9 Vc11ey Authority . | . Tenn2ss:9 Vc11ey Authority . | ||
- Scquoygh Nucicer Pitnt LER SUPPLEMENTAL INFORMATION SQRO-50-327/ 8048 Technical Specification Involved 3.3.3.1 Reported Under Technical Specification Section 6.9.1.12.1 | |||
- Scquoygh Nucicer Pitnt | |||
LER SUPPLEMENTAL INFORMATION SQRO-50-327/ 8048 Technical Specification Involved 3.3.3.1 Reported Under Technical Specification Section 6.9.1.12.1 | |||
~ | ~ | ||
Date of Occurrence 5/15/80 Tiec of Occurrence: 0100 CDST Unit 1 Identification and Description of Occurrence Centainnent purge air exhaust monitors test switches were discovered to be in the test position making the monitorn inoperable. LCO 3.3.3.1 requires et lesst one monitor be operable. Action 26 of the LCO requiring closure of l penetrations which provide direct ~ access from the containment atmosphere to the I outside atmosphere was not met. The inoperable containment purge air exhaust l | Date of Occurrence 5/15/80 Tiec of Occurrence: 0100 CDST Unit 1 Identification and Description of Occurrence Centainnent purge air exhaust monitors test switches were discovered to be in the test position making the monitorn inoperable. LCO 3.3.3.1 requires et lesst one monitor be operable. Action 26 of the LCO requiring closure of l penetrations which provide direct ~ access from the containment atmosphere to the I outside atmosphere was not met. The inoperable containment purge air exhaust l | ||
| Line 125: | Line 79: | ||
N/A 1 | N/A 1 | ||
Apparent Cause of Occurrence Personnel error. | Apparent Cause of Occurrence Personnel error. | ||
1 Analysis of Occurrence l There was no hazard to the public health and safety. l Corrective Actica | 1 Analysis of Occurrence l There was no hazard to the public health and safety. l Corrective Actica Monitors were immediately removed from test mode upon discovery. Administrative 1 Instruction (AI-5) system status checklist was revised to require that each oncoming shift verify that the test switches are in the off position. | ||
Monitors were immediately removed from test mode upon discovery. Administrative 1 Instruction (AI-5) system status checklist was revised to require that each oncoming shift verify that the test switches are in the off position. | |||
Failure Data l 1 | Failure Data l 1 | ||
N/A l l | N/A l l | ||
i l}} | i l}} | ||
Revision as of 02:42, 1 February 2020
| ML19323G629 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 05/28/1980 |
| From: | Gault G TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19323G624 | List: |
| References | |
| LER-80-048-01T, LER-80-48-1T, NUDOCS 8006060403 | |
| Download: ML19323G629 (2) | |
Text
o
- .
H nc F O R D.1.7,6 U. S. NUCLE AR REGUL ATORY COMMI5510?J l1715 LICENSEE EVENT REPORT EXH1 BIT A CoNiitOL CLOC*:- [ l l l ! l lh 6 (PLEt.$E PRINT OR TYPE ALL CEOUIREO INFon?.*ATICN)
I,oIilITlN!S!NlPI1l@ul0
. , t.u ,a. tum .4 l 0 l- 10 lo lo <.e uu ~.c j_n.u101 I n10 a al@l 411 l 1l Il1 o w.a 1,,e u l@lo--@ I !
CO*rT lotil sM LL_J@l 01 SIO I o 'O 13 I 217 l@l0 itvEr,TDATE s I l l si a l ot@l o i REpQTIT s12 DAT I 81 si #3al@
F 4 f,J (,1 ;,,,4 4 E f r.u'.'2 f a s4 f. J 74 il E EVta.T DCCCRIPTIO'J AND PAO 3 ASLE CONSECUENCES h W d gat 0100 CDST with Unit 1 in Mode 3, it was discovered that the test switche,p io ig g on the containm'ent purge exh'aust radiation monitors were in the test oositib lo l4 l Imaking the monitors inoperable (TS LCO 3.3.3.1 reouires one monitor !
O i n i ., i ioperable in all modes) caking them unable to provide a containment vent i o p, ; lisolation signal. Since Unit I had not yet achieved initial criticality I f o lil l there were no radiation releases. Therefore there was no dancer to the I o ., ih ealth and safety of the public. t Sv 5 f f '.' C AU: t CALSt CO'.
CODE vatvt Co E $UJC005 CO*.*70?.E *4 T CODE SUSCCDE SusCODI -
io!,1 7 8 9 l Ml cl@ [A J@ [J@ l IlN l S l TlR l Ul@ [Ej@ [Ej @
80 11 12 13 la 19 20 SEOl'f 8.TI AL OCCUongNCE a s soce T R EVIS109 EvtNf vtaR 8'E POH Y ?.0. C001 TYPE *O O ."t f * *Oj.l.L*' I l8 10 l [ _.] I O I4 I 8 l L:, a n 2 a M, 2
10 2
l 1,i 2
LT J n 1.!
J LQJ 3:
~ %'r.'t9 '.$?! c'Nt.Mr 'IMB3W ubuns ^"a,"r?!s' s rEn1 Os "Tu?.837 ' ..ff,'fsu'a'r R e Lx.J8l1J@
JJ JS LHJ@
3a Laj@
a5 10 I o f o@f o l' imJ@
3d 41 l.IJ@Laj@ I;z l~ of a lo IC 40 42 43 44 at CAUSE O!0CntPTION AND CORREC f tVE ACTIO!!O h li l 3 [ t Operator error in placing both trains of radiation monitors in test at ther
[TTq l same time. Upon discovery the radiation monitors were ir-mediately re- 1 IiI>lI turned opernhie. I I i i .i l l I
, Ii le I ! l
.o ST ' * .POWC T1 OTHCR$fATU3 , ' , 0e 8 DiSCovtnv att n,Pr.01
~
FTTl LnJ@ 1010 l OJ@l " "
N/A I [Hj@l Operator observation I
%'r, v,, v Cs.f i e.T
. 4 u.. .cn es etteer tocariov cr nEtCast @
li Ir I4 LaJ
- 7 3
@ laJ@l .
1 tt n/A4 ou .T or ACTivitv 44
-l @ l 43 N/A l IJ
.c n. r. 0 t . con.e pp1lo"fd'lOi@$Of""'"9E/A l
,0.w.. . l',..,JI,a "
... . . u n or u.n., n m @
li1..llo1010!@l N/A F t' '1 1I 12 kJ I
1 t,f.,'.",
m f), f,T.I D.A'.' S f.7,0.1 F ACil.t f y @.
..t.... .
^
l'l!LEJSL
,v vi,, v N/A I
, . , ,,,,,..r.
S unc uy ,,nt ,
,f FTil L., al.5l.
N/A I IIIIII!'III!l
. ,o
- c. <. 3 -
navi Or enu r.cu, Getry W. Gault ,n e,y , , (615) 842-0295 mm
- 8006060903 o a.
o xx.
. Tenn2ss:9 Vc11ey Authority .
- Scquoygh Nucicer Pitnt LER SUPPLEMENTAL INFORMATION SQRO-50-327/ 8048 Technical Specification Involved 3.3.3.1 Reported Under Technical Specification Section 6.9.1.12.1
~
Date of Occurrence 5/15/80 Tiec of Occurrence: 0100 CDST Unit 1 Identification and Description of Occurrence Centainnent purge air exhaust monitors test switches were discovered to be in the test position making the monitorn inoperable. LCO 3.3.3.1 requires et lesst one monitor be operable. Action 26 of the LCO requiring closure of l penetrations which provide direct ~ access from the containment atmosphere to the I outside atmosphere was not met. The inoperable containment purge air exhaust l
radiation monitors would not have provided a centainment ventilation isolation '
signal, however, isolation was still functional frem containment upper and lower radiation monitors and safety injection signals.
1 Conditions Prior to Occurrence Unit 1 in Mode 3. Preoperational Testing i Action specified in the Technical Specification Surveillance Requirements met l due to inoperable equipment. '
N/A 1
Apparent Cause of Occurrence Personnel error.
1 Analysis of Occurrence l There was no hazard to the public health and safety. l Corrective Actica Monitors were immediately removed from test mode upon discovery. Administrative 1 Instruction (AI-5) system status checklist was revised to require that each oncoming shift verify that the test switches are in the off position.
Failure Data l 1
N/A l l
i l