ML19321B051: Difference between revisions
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{{#Wiki_filter:____ _ _ _ - _ _ _ - _ _ | {{#Wiki_filter:____ _ _ _ - _ _ _ - _ _ | ||
l > | l > | ||
.e f sneronu:ss (7 77) | |||
.e | |||
f sneronu:ss (7 77) | |||
: u. s. tavetE AR Rtcut ATcRY COYYISS 04 LICENSEE EVEfJT REPORT EXHIBIT A b | : u. s. tavetE AR Rtcut ATcRY COYYISS 04 LICENSEE EVEfJT REPORT EXHIBIT A b | ||
ccNract etece i 1 I i 1 ! l@ I 6 (cteist pais t oR TYPE At t F*EC.ilR ED INF C A'.*AT:ONI l,o l i l2 IT I oc.Nai N l S cw l hl P il !Q. 0 !0 l - l 01 | ccNract etece i 1 I i 1 ! l@ I 6 (cteist pais t oR TYPE At t F*EC.ilR ED INF C A'.*AT:ONI l,o l i l2 IT I oc.Nai N l S cw l hl P il !Q. 0 !0 l - l 01 d O IO 10 I- !0 l 0a !@ | ||
d O IO 10 I- !0 l 0a !@ | |||
oc e.a .. . .i < a 4 Ioce.a111nI,el !1 a l@u.:l .. l@ | oc e.a .. . .i < a 4 Ioce.a111nI,el !1 a l@u.:l .. l@ | ||
CCYf Iol'l 8 | CCYf Iol'l 8 | ||
L"?,':' IL@l o! s ! o!o I o f 119 !7 Cl 0 4 ! 2 ! 318 ! 0 !@l0171 21 2! si d@ t ,4 i (.J 64 ;; < t r +./.*t g a E) EVENT DATE 74 5 Atocar caf f 83 EVENT CESCR PTIO*J AND Pec3 A3t! 003.0E%ENOEs 10: 21l While in Mode 3, uni: -perator observed centaineent sure level. I | L"?,':' IL@l o! s ! o!o I o f 119 !7 Cl 0 4 ! 2 ! 318 ! 0 !@l0171 21 2! si d@ t ,4 i (.J 64 ;; < t r +./.*t g a E) EVENT DATE 74 5 Atocar caf f 83 EVENT CESCR PTIO*J AND Pec3 A3t! 003.0E%ENOEs 10: 21l While in Mode 3, uni: -perator observed centaineent sure level. I 10,3, i 1-LI-63-179, -iEdi ating"approximatiely .10*; with other three indicators ! '. | ||
10,3, i 1-LI-63-179, -iEdi ating"approximatiely .10*; with other three indicators ! '. | |||
Io1 1I reading zero. The loop was placed in a triered cendition. This 1 | Io1 1I reading zero. The loop was placed in a triered cendition. This 1 | ||
[ c i s i ; resulted in entering LCO 3. 3.2.1 Action 21. Previous occurrences - 1 I a 03 i inone. , ! | [ c i s i ; resulted in entering LCO 3. 3.2.1 Action 21. Previous occurrences - 1 I a 03 i inone. , ! | ||
lo irl ! I loisi! I 1 3 9 33 S v 5 ' f '.' CAJE CAL 5! C O *.* | lo irl ! I loisi! I 1 3 9 33 S v 5 ' f '.' CAJE CAL 5! C O *.* | ||
* vaa g CCOf cc:t 3.3 :Cf CO*.'70* ENT 0 0Lt $s t :~. ;E SL5:0;l 1012i | * vaa g CCOf cc:t 3.3 :Cf CO*.'70* ENT 0 0Lt $s t :~. ;E SL5:0;l 1012i | ||
, . I s i Pl@ L,tj@ L,.sj@ ll I N!s ; T ra l u !@ | , . I s i Pl@ L,tj@ L,.sj@ ll I N!s ; T ra l u !@ | ||
, i, , ,, a L..T_j@ tZj a @ | , i, , ,, a L..T_j@ tZj a @ | ||
CCCUSafSCE pp;ar *Dr$ ON - | CCCUSafSCE pp;ar *Dr$ ON - | ||
ni -,.. $.f.''u f.s2t 0 ., iat Cx, 1 .. se f.,. | ni -,.. $.f.''u f.s2t 0 ., iat Cx, 1 .. se f.,. | ||
@ .*.a . . , ,j..1," 2n u n | @ .*.a . . , ,j..1," 2n u n | ||
_l 810l oI ' 91 iuI L--J | _l 810l oI ' 91 iuI L--J LJ v | ||
LJ v | |||
l:nO! 3ni LL_j u l, ! | l:nO! 3ni LL_j u l, ! | ||
1 LO_J | 1 LO_J ACf 4CN put;mg Tante ga CN ,si;* g.S t -g . .a . a p a. .e ,7 Non3 4 anwt cc./s : .s;Nh? | ||
ACf 4CN put;mg Tante ga CN ,si;* g.S t -g . .a . a p a. .e ,7 Non3 4 anwt cc./s : .s;Nh? | |||
c;* | c;* | ||
(.. | (.. | ||
| Line 64: | Line 46: | ||
4} (J d4 af cAust Ossearerien ANo cc. net.:nve ac rcNs @ | 4} (J d4 af cAust Ossearerien ANo cc. net.:nve ac rcNs @ | ||
lilaIlThe leop transmitter was found to be defective. The defective I iii jl transmitter was replaced, the new transmitter calibrated.and respense- I l'!'II time tested. The loop was returned to service, i l i i 21 1 I | lilaIlThe leop transmitter was found to be defective. The defective I iii jl transmitter was replaced, the new transmitter calibrated.and respense- I l'!'II time tested. The loop was returned to service, i l i i 21 1 I | ||
, ii!4 1! I r a > n sfAi $ *POff4 OT= E R S T. TL N C+5COvt'tY 0E30a:8 7'O N I i i s I L.BJ@ l 01010!@,1N/A l [ Aj@ Operator cbservation ! | |||
, ii!4 1! I r a > n sfAi $ *POff4 | |||
OT= E R S T. TL N C+5COvt'tY 0E30a:8 7'O N I i i s I L.BJ@ l 01010!@,1N/A l [ Aj@ Operator cbservation ! | |||
.6,,, :Rin, '' | .6,,, :Rin, '' | ||
oc.v.u e,,nce: ' '. .::,::.:m,r< @ l | oc.v.u e,,nce: ' '. .::,::.:m,r< @ l | ||
. t::.1 c. . . . st @ | . t::.1 c. . . . st @ | ||
l' !c .I ILZJ @ LZj3l N/A II lb l N/A ! | l' !c .I ILZJ @ LZj3l N/A II lb l N/A ! | ||
ft 44 43 5J P( 87 tdj* P,{ [, ( E PQ .yd4([ | ft 44 43 5J P( 87 tdj* P,{ [, ( E PQ .yd4([ | ||
...t.u . 1.., Oc:g.,,...e (9 IiiiiiO!OlOl@Lj;j@l " | ...t.u . 1.., Oc:g.,,...e (9 IiiiiiO!OlOl@Lj;j@l " | ||
N/A l | N/A l | ||
, v.s o .. 'i , .. m'. i t. | , v.s o .. 'i , .. m'. i t. | ||
. ...r, e, | . ...r, e, | ||
'l ' l I l O! 0 ! 0!@ ::n ,r.o .@N/A l 7 t' J et ti tJ | 'l ' l I l O! 0 ! 0!@ ::n ,r.o .@N/A l 7 t' J et ti tJ | ||
| Line 88: | Line 62: | ||
~ tm.~ | ~ tm.~ | ||
t = s e, s,s | t = s e, s,s | ||
... 7'" P."- '" u u t # | ... 7'" P."- '" u u t # | ||
- 17!'i Ljjj h ,,,,,,,.., @ | - 17!'i Ljjj h ,,,,,,,.., @ | ||
N/A l l1 It iI''''!! f | N/A l l1 It iI''''!! f | ||
(,, ' . 2 i., | (,, ' . 2 i., | ||
| Line 98: | Line 70: | ||
e , | e , | ||
Tennessee Valley Authority Sequoyah Nuclear Plant LER SUPPLEMDIIAL INFORMATION SQRO-50-327/80 91' Technical Specification Involved: 3.3.2.1 | |||
SQRO-50-327/80 91' Technical Specification Involved: 3.3.2.1 | |||
, Reported Under Technical Specification: 6.9.1.13 | , Reported Under Technical Specification: 6.9.1.13 | ||
, Date of Occurrence: 6/23/80 Time of Occurrence: 1045 CDT Identification and Description of Occurrence: | , Date of Occurrence: 6/23/80 Time of Occurrence: 1045 CDT Identification and Description of Occurrence: | ||
While in Mode 3, the unit operator observed the containment sump level indicator to be reading nrJ0% (1-LI-63-179). The three redundant level loops indicated a level of 0%. | While in Mode 3, the unit operator observed the containment sump level indicator to be reading nrJ0% (1-LI-63-179). The three redundant level loops indicated a level of 0%. | ||
| Line 114: | Line 80: | ||
Apparent Cause of Occurrence: | Apparent Cause of Occurrence: | ||
The transmitter located on el. 698 near seal table failed to caintain the proper output (10 ta) for a zero level in containment. | The transmitter located on el. 698 near seal table failed to caintain the proper output (10 ta) for a zero level in containment. | ||
Analysis of Occurrence: '' | Analysis of Occurrence: '' | ||
Defective transmitter. There was no safety hazard as a result of this occurrence. | Defective transmitter. There was no safety hazard as a result of this occurrence. | ||
;, Corrective Action: | ;, Corrective Action: | ||
Defective transmitter was replaced, calibrated, and its response tice tested. | Defective transmitter was replaced, calibrated, and its response tice tested. | ||
Corrective action was completed in 8 days. | Corrective action was completed in 8 days. | ||
Fail;re Data: | Fail;re Data: | ||
None. This defect has not been previously reported. | None. This defect has not been previously reported. | ||
1 I | |||
1 | |||
I | |||
l | l | ||
) | ) | ||
. I}} | . I}} | ||
Latest revision as of 04:29, 1 February 2020
| ML19321B051 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 07/22/1980 |
| From: | Reynolds R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19321B050 | List: |
| References | |
| LER-80-091-03L, LER-80-91-3L, NUDOCS 8007250416 | |
| Download: ML19321B051 (2) | |
Text
____ _ _ _ - _ _ _ - _ _
l >
.e f sneronu:ss (7 77)
- u. s. tavetE AR Rtcut ATcRY COYYISS 04 LICENSEE EVEfJT REPORT EXHIBIT A b
ccNract etece i 1 I i 1 ! l@ I 6 (cteist pais t oR TYPE At t F*EC.ilR ED INF C A'.*AT:ONI l,o l i l2 IT I oc.Nai N l S cw l hl P il !Q. 0 !0 l - l 01 d O IO 10 I- !0 l 0a !@
oc e.a .. . .i < a 4 Ioce.a111nI,el !1 a l@u.:l .. l@
CCYf Iol'l 8
L"?,':' IL@l o! s ! o!o I o f 119 !7 Cl 0 4 ! 2 ! 318 ! 0 !@l0171 21 2! si d@ t ,4 i (.J 64 ;; < t r +./.*t g a E) EVENT DATE 74 5 Atocar caf f 83 EVENT CESCR PTIO*J AND Pec3 A3t! 003.0E%ENOEs 10: 21l While in Mode 3, uni: -perator observed centaineent sure level. I 10,3, i 1-LI-63-179, -iEdi ating"approximatiely .10*; with other three indicators ! '.
Io1 1I reading zero. The loop was placed in a triered cendition. This 1
[ c i s i ; resulted in entering LCO 3. 3.2.1 Action 21. Previous occurrences - 1 I a 03 i inone. , !
lo irl ! I loisi! I 1 3 9 33 S v 5 ' f '.' CAJE CAL 5! C O *.*
- vaa g CCOf cc:t 3.3 :Cf CO*.'70* ENT 0 0Lt $s t :~. ;E SL5:0;l 1012i
, . I s i Pl@ L,tj@ L,.sj@ ll I N!s ; T ra l u !@
, i, , ,, a L..T_j@ tZj a @
CCCUSafSCE pp;ar *Dr$ ON -
ni -,.. $.f.u f.s2t 0 ., iat Cx, 1 .. se f.,.
@ .*.a . . , ,j..1," 2n u n
_l 810l oI ' 91 iuI L--J LJ v
l:nO! 3ni LL_j u l, !
1 LO_J ACf 4CN put;mg Tante ga CN ,si;* g.S t -g . .a . a p a. .e ,7 Non3 4 anwt cc./s : .s;Nh?
c;*
(..
a;' O *: i.A'., '/IT-CD MO.'84 3 e. 54 3 ' 's Y il D F Cit't w 9 Sa8'Ll!4 ' ' . . . F a : ~. a g e L
JJ CJ g e4% I @ L. Zj@
39 LZ_J@
.3 l 0101 Ol'0 3d 43 l Lyj@
41 L_Yj@ (Jij@ l 8 i O!8 I O!@
4} (J d4 af cAust Ossearerien ANo cc. net.:nve ac rcNs @
lilaIlThe leop transmitter was found to be defective. The defective I iii jl transmitter was replaced, the new transmitter calibrated.and respense- I l'!'II time tested. The loop was returned to service, i l i i 21 1 I
, ii!4 1! I r a > n sfAi $ *POff4 OT= E R S T. TL N C+5COvt'tY 0E30a:8 7'O N I i i s I L.BJ@ l 01010!@,1N/A l [ Aj@ Operator cbservation !
.6,,, :Rin,
oc.v.u e,,nce: ' '. .::,::.:m,r< @ l
. t::.1 c. . . . st @
l' !c .I ILZJ @ LZj3l N/A II lb l N/A !
ft 44 43 5J P( 87 tdj* P,{ [, ( E PQ .yd4([
...t.u . 1.., Oc:g.,,...e (9 IiiiiiO!OlOl@Lj;j@l "
N/A l
, v.s o .. 'i , .. m'. i t.
. ...r, e,
'l ' l I l O! 0 ! 0!@ ::n ,r.o .@N/A l 7 t' J et ti tJ
? ) f t.pt.: ? v Lt**t C.'d O f ',.i.- O
- *Ay/ r'F.,ii r) +,
. G Ii i ~ ! L ZjEl N/A !
~ tm.~
t = s e, s,s
... 7'" P."- '" u u t #
- 17!'i Ljjj h ,,,,,,,.., @
N/A l l1 It iI'!! f
(,, ' . 2 i.,
c, u -
NAvc cr anta.nn R. H. Reynolds ,u c,, t . 61 %ga?_noS 8007250/[E
e ,
Tennessee Valley Authority Sequoyah Nuclear Plant LER SUPPLEMDIIAL INFORMATION SQRO-50-327/80 91' Technical Specification Involved: 3.3.2.1
, Reported Under Technical Specification: 6.9.1.13
, Date of Occurrence: 6/23/80 Time of Occurrence: 1045 CDT Identification and Description of Occurrence:
While in Mode 3, the unit operator observed the containment sump level indicator to be reading nrJ0% (1-LI-63-179). The three redundant level loops indicated a level of 0%.
Conditions Prior to Occurrence:
Unit 1 in Mode 3. Reactor coolant te=p at 547C F, pressure at 1725 psig.
Action Specified in Technical Specificatica Surveillance Requirements cet due to inoperable equipment.
Tha affected channel was placed in a tripped status within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> (3.3.2.1, Table 3.3-3 Action 21A) .
Apparent Cause of Occurrence:
The transmitter located on el. 698 near seal table failed to caintain the proper output (10 ta) for a zero level in containment.
Analysis of Occurrence:
Defective transmitter. There was no safety hazard as a result of this occurrence.
- , Corrective Action
Defective transmitter was replaced, calibrated, and its response tice tested.
Corrective action was completed in 8 days.
Fail;re Data:
None. This defect has not been previously reported.
1 I
l
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. I