ML19318A957: Difference between revisions
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o NRC FOR%t 068 U. S. PdVCLE AR REGULATORY COYYlSSIOf4 (7 77) | |||
o | |||
NRC FOR%t 068 U. S. PdVCLE AR REGULATORY COYYlSSIOf4 (7 77) | |||
LICEi45EE EVENT REPORT EXHIBIT A | LICEi45EE EVENT REPORT EXHIBIT A | ||
\' | \' | ||
| Line 41: | Line 34: | ||
* I I | * I I | ||
l ois l l | l ois l l | ||
$vs t f *.I f C AL.!! C O*.* | $vs t f *.I f C AL.!! C O*.* | ||
* VALvf Coon cc: | * VALvf Coon cc: | ||
CAJ'a Susc :t Co.v:.astc os sus ::e swsco:s | CAJ'a Susc :t Co.v:.astc os sus ::e swsco:s lo j ?j l RIB l@ [6 J@ L.Aj @ l X!X l X IX l XI X 18 L zJ@ LZJ 23 G | ||
3 s 9 10 in 12 13 ta 13 5F CU E *.ri A L CC02 8 8 PrCE mt*04T , Afvr$acN t . gn og .EVENrvtAA | |||
3 s 9 10 in 12 13 ta 13 | |||
5F CU E *.ri A L CC02 8 8 PrCE mt*04T , Afvr$acN t . gn og .EVENrvtAA | |||
* E8Ca r NO. CC0i rvat Ac. | * E8Ca r NO. CC0i rvat Ac. | ||
@;(J.:.i;; 18 0 i L--J l 017!01 L<.J 10I 3123 LLJ L-! | @;(J.:.i;; 18 0 i L--J l 017!01 L<.J 10I 3123 LLJ L-! | ||
| Line 54: | Line 43: | ||
_2n 22 23 28 2G 27 25 JJ 32 | _2n 22 23 28 2G 27 25 JJ 32 | ||
. i n'T! 'n'G' e'!!<'Kr 5;iUr .cou., ^, W = lf ,a*"ic, ' r,V.i"* ..f5"!!A''i, | . i n'T! 'n'G' e'!!<'Kr 5;iUr .cou., ^, W = lf ,a*"ic, ' r,V.i"* ..f5"!!A''i, | ||
-- '' I o I ol o 43@ILB.J@ o I LEJ@ lzj@ l zl 919 19 i t_HJ@LZ_!@ | -- '' I o I ol o 43@ILB.J@ o I LEJ@ lzj@ l zl 919 19 i t_HJ@LZ_!@ | ||
3J 31 LZJ@ | 3J 31 LZJ@ | ||
Ji L_%@ | Ji L_%@ | ||
36 38 el 42 43 as 4; cAust cesomeTicN ANc c nae: rive ActicNs @ | 36 38 el 42 43 as 4; cAust cesomeTicN ANc c nae: rive ActicNs @ | ||
lilal! During plant cooldown. makeup to the refueling water storaRe tank 1 | lilal! During plant cooldown. makeup to the refueling water storaRe tank 1 t i t i i 1 was no t initiated early enough to prevent the RWST level from dropping i rT1I below T.S. limits. Upon discovery, makeup to RWST immediately initiated.t | ||
,,,,,; Operators reinstructed on Tech. Spec. requirements. t Ii14 i! _ | |||
,,,,,; Operators reinstructed on Tech. Spec. requirements. t | |||
Ii14 i! _ | |||
l | l | ||
> a 3 n SfA '. % *0W!rt Or"C 8t $r A TU3 D* * . 3 $ Di!COvtnv CE s:niefit s iI i 5 I [.Gj@ l 010 l Ol@l N/A I La.J@i operator observation I I | > a 3 n SfA '. % *0W!rt Or"C 8t $r A TU3 D* * . 3 $ Di!COvtnv CE s:niefit s iI i 5 I [.Gj@ l 010 l Ol@l N/A I La.J@i operator observation I I | ||
' A! miry c ' lie,r '' " '' ''' '' '' | ' A! miry c ' lie,r '' " '' ''' '' '' | ||
acu.m e netc A i tec Ar.c~ e. ac.cass @- | acu.m e netc A i tec Ar.c~ e. ac.cass @- | ||
| Line 81: | Line 63: | ||
* u"? # o | * u"? # o | ||
, rvre Ct;&ief!ON i | , rvre Ct;&ief!ON i | ||
Ii' ! i* 1010 l o '!@LJi@l | Ii' ! i* 1010 l o '!@LJi@l N/A '' | ||
N/A '' | |||
, 0.w. . '< . J u n, . u t ., | , 0.w. . '< . J u n, . u t ., | ||
orsem r.@ I FTTe11010 t a l o i@ls: N/A | orsem r.@ I FTTe11010 t a l o i@ls: N/A | ||
| Line 89: | Line 69: | ||
. t r.,#4 Of On D A? W.C 10 r Af.e t.t r y i .e t f t ,ytt et t a p*. | . t r.,#4 Of On D A? W.C 10 r Af.e t.t r y i .e t f t ,ytt et t a p*. | ||
l I~I'l .W@[_'_._N/ A | l I~I'l .W@[_'_._N/ A | ||
, , r, e eav:. I y ur.c t.1 u,N t v u c., n . .en e f e. . | , , r, e eav:. I y ur.c t.1 u,N t v u c., n . .en e f e. . | ||
l11 r | l11 r | ||
i 1!@l a 3 eu N/A 1 63 IffI!I''Ii''I r, J ' | i 1!@l a 3 eu N/A 1 63 IffI!I''Ii''I r, J ' | ||
NA t os antPAmn Daniel J. Record ,me,y t . 615-842-5208 800624 | NA t os antPAmn Daniel J. Record ,me,y t . 615-842-5208 800624 | ||
* T;nnass3 Velisy Authority Sequoyah Nuclear Plant LER SUPPLEMENTAL INFORMATION SQRO-50-327/ 8070 Technical Specification Involved 3.1.2.6 Reported Under Technical Saecification 6.9.1.13.b Late of Occurrence: -5/17/80 0450 CDST Identification and Description of Occurrence: | |||
* T;nnass3 Velisy Authority | |||
During unit 1 cooldown from Mode 3, RWST level fell below required water level while still in Mode 4. | During unit 1 cooldown from Mode 3, RWST level fell below required water level while still in Mode 4. | ||
Conditions Prior to Occurrence: | Conditions Prior to Occurrence: | ||
Unit 1 in Mode 3 Apparent Cause of Occurrence: | Unit 1 in Mode 3 Apparent Cause of Occurrence: | ||
The de=and on RWST water due to RCS shrink and pressurizer level was underestimated during unit 1 cooldown and makeup not started in time to maintain RWST level. | The de=and on RWST water due to RCS shrink and pressurizer level was underestimated during unit 1 cooldown and makeup not started in time to maintain RWST level. | ||
Analysis of Occurrence: | Analysis of Occurrence: | ||
There was no danger to public health and safety. | There was no danger to public health and safety. | ||
| Line 115: | Line 83: | ||
Cooldown was continued to Mode 5 (where required level is only 35,443 gallons) while . continuously making up to the RWST. | Cooldown was continued to Mode 5 (where required level is only 35,443 gallons) while . continuously making up to the RWST. | ||
Failure Data: | Failure Data: | ||
N/A l | |||
N/A | |||
l | |||
O | O | ||
%}} | %}} | ||
Revision as of 07:23, 1 February 2020
| ML19318A957 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/16/1980 |
| From: | Record D TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19318A951 | List: |
| References | |
| LER-80-070-03L, LER-80-70-3L, NUDOCS 8006240433 | |
| Download: ML19318A957 (2) | |
Text
{{#Wiki_filter:- e . o NRC FOR%t 068 U. S. PdVCLE AR REGULATORY COYYlSSIOf4 (7 77) LICEi45EE EVENT REPORT EXHIBIT A
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c0NinoLctccx:l l l l l l l@ (PLE A$E PRIN T C A TYPE ALL f:E QUIRED I?.FO R?.:ATICN) 8 6 l I,o I. i,l l TeuII s,.. !! sCm I tr ! pl 1 !@ul 010! In .10In i.
. ..f . o InI nl InI anl@la11 :s <,w.a ! 1.... !1 ol1l@! u.: I a@
' '~ ~
Io I ,,""i":[[L_}@l 015 i Oi 01013 l 217 l@! 015 l 11 718 l 0!@l UI6 34 Ja l 116' I'8 06J l@ ~ aE*03r ,v t 7 e f.J 61 ;;a gra..s*354 J 63 l'e t97 0 ATE EVENT DESO: UPTION AND pao 9aSLT CONSEcvENCES h' In i 21 i During unit 1 cooldown from Mode 3. the refueline water st.grane tank / I
- - - - . water level fel"l I below
~ ~ reou' ired level while in Mode 4 T.S. 3.1.2.6 I 1o 4 3 ! l I
ini.it requires at least 370,000 gallons in the RWST. There is no danger to I in is j i the health and safety of the public. I l o i r, i 1 1 l o 17 I l
- I I
l ois l l
$vs t f *.I f C AL.!! C O*.*
- VALvf Coon cc:
CAJ'a Susc :t Co.v:.astc os sus ::e swsco:s lo j ?j l RIB l@ [6 J@ L.Aj @ l X!X l X IX l XI X 18 L zJ@ LZJ 23 G 3 s 9 10 in 12 13 ta 13 5F CU E *.ri A L CC02 8 8 PrCE mt*04T , Afvr$acN t . gn og .EVENrvtAA
- E8Ca r NO. CC0i rvat Ac.
@;(J.:.i;; 18 0 i L--J l 017!01 L<.J 10I 3123 LLJ L-!
Ji LO_J _2n 22 23 28 2G 27 25 JJ 32
. i n'T! 'n'G' e'!!<'Kr 5;iUr .cou., ^, W = lf ,a*"ic, ' r,V.i"* ..f5"!!Ai,
-- I o I ol o 43@ILB.J@ o I LEJ@ lzj@ l zl 919 19 i t_HJ@LZ_!@
3J 31 LZJ@ Ji L_%@ 36 38 el 42 43 as 4; cAust cesomeTicN ANc c nae: rive ActicNs @ lilal! During plant cooldown. makeup to the refueling water storaRe tank 1 t i t i i 1 was no t initiated early enough to prevent the RWST level from dropping i rT1I below T.S. limits. Upon discovery, makeup to RWST immediately initiated.t
,,,,,; Operators reinstructed on Tech. Spec. requirements. t Ii14 i! _
l
> a 3 n SfA '. % *0W!rt Or"C 8t $r A TU3 D* * . 3 $ Di!COvtnv CE s:niefit s iI i 5 I [.Gj@ l 010 l Ol@l N/A I La.J@i operator observation I I
' A! miry c ' lie,r "
acu.m e netc A i tec Ar.c~ e. ac.cass @- y ev .r e, Activirv @ l
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69 et 44 I 41
'r / ^
SJ l Pf e'. y.Ng t f .Powet
- u"? # o
, rvre Ct;&ief!ON i
Ii' ! i* 1010 l o '!@LJi@l N/A
, 0.w. . '< . J u n, . u t .,
orsem r.@ I FTTe11010 t a l o i@ls: N/A
,, e4
. t r.,#4 Of On D A? W.C 10 r Af.e t.t r y i .e t f t ,ytt et t a p*.
l I~I'l .W@[_'_._N/ A
, , r, e eav:. I y ur.c t.1 u,N t v u c., n . .en e f e. .
l11 r i 1!@l a 3 eu N/A 1 63 IffI!IIiI r, J ' NA t os antPAmn Daniel J. Record ,me,y t . 615-842-5208 800624
- T;nnass3 Velisy Authority Sequoyah Nuclear Plant LER SUPPLEMENTAL INFORMATION SQRO-50-327/ 8070 Technical Specification Involved 3.1.2.6 Reported Under Technical Saecification 6.9.1.13.b Late of Occurrence: -5/17/80 0450 CDST Identification and Description of Occurrence:
During unit 1 cooldown from Mode 3, RWST level fell below required water level while still in Mode 4. Conditions Prior to Occurrence: Unit 1 in Mode 3 Apparent Cause of Occurrence: The de=and on RWST water due to RCS shrink and pressurizer level was underestimated during unit 1 cooldown and makeup not started in time to maintain RWST level. Analysis of Occurrence: There was no danger to public health and safety. Corrective Action: Cooldown was continued to Mode 5 (where required level is only 35,443 gallons) while . continuously making up to the RWST. Failure Data: N/A l O
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