ML19321A114: Difference between revisions
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i CED LDuring the_ contract.. review,. it was . discovered that.the. local _ control GID Lstation selector _svitches.(C-11 type .10250T1.which.ar's used..irt class _1E_J g_ ; circuits in _the..vertic.a.l pipe chase, aux feedwater pump turbine room,. ._ _ _ . ! | |||
e vt.,, n, :.u . o., 4.,n n.e .a r u .. . ......0 | A LR111Lheat. exchanger room, gas . stripper room. and. the R11R pump _r.com . lack.J EI.O Lenvironm.cn.tal_. qualification. data to substantiate their required operat,1,op , | ||
GID Lstation selector _svitches.(C-11 type .10250T1.which.ar's used..irt class _1E_J g_ ; circuits in _the..vertic.a.l pipe chase, aux feedwater pump turbine room,. ._ _ _ . ! | |||
A LR111Lheat. exchanger room, gas . stripper room. and. the R11R pump _r.com . lack.J | |||
EI.O Lenvironm.cn.tal_. qualification. data to substantiate their required operat,1,op , | |||
I | I | ||
~~ | ~~ | ||
EID l.following a.high energy line break. This could lead to operation.in a,1 I, i l,''.E'.3,, i degraded mode . . , | EID l.following a.high energy line break. This could lead to operation.in a,1 I, i l,''.E'.3,, i degraded mode . . , | ||
- . .a. . | - . .a. . | ||
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e ,. . . . t . . - . . . . e... . m, . t F.'.1:'J L. Engineering Design is presently evaluating thin probicm for the proper 1 | e ,. . . . t . . - . . . . e... . m, . t F.'.1:'J L. Engineering Design is presently evaluating thin probicm for the proper 1 | ||
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, . .. . . . . . , . . . . . Dean Romine _ | , . .. . . . . . , . . . . . Dean Romine _ | ||
I e - | I e - | ||
8007220y7 m | 8007220y7 m | ||
*. ,h, , ,-[f. . Sequoy h Nuc1':ce Pirnt | 1, Tenn see Vc11;y Authority | ||
*. ,h, , ,-[f. . Sequoy h Nuc1':ce Pirnt LER SUPPLEMENTAL INFORMATION t . | |||
LER SUPPLEMENTAL INFORMATION | |||
t . | |||
SQRO-50-327/80 89 Technical Specification Involved N/A 3 | SQRO-50-327/80 89 Technical Specification Involved N/A 3 | ||
Reported Under Technical Specification 6.9.1.13.b | Reported Under Technical Specification 6.9.1.13.b | ||
~ | ~ | ||
Date of Occurrence: 6/9/80 Time of Occurrence: 0845 CDST Unit: 1 Identification and Description of Occurrence: . | Date of Occurrence: 6/9/80 Time of Occurrence: 0845 CDST Unit: 1 Identification and Description of Occurrence: . | ||
The local control station selector switches (C-H type 10250T) which are used in class 1E circuits in the vertical pipe chase, auxiliary feedwater pump | The local control station selector switches (C-H type 10250T) which are used in class 1E circuits in the vertical pipe chase, auxiliary feedwater pump | ||
, turbine room, RHR heat exchanger room, gas stripper room, and the RBR pump room lack environmental qualification data to substantiate their required operation following a high energy line break. | |||
, turbine room, RHR heat exchanger room, gas stripper room, and the RBR pump room lack environmental qualification data to substantiate their required | |||
operation following a high energy line break. | |||
Conditions Prior to Occurrence: | Conditions Prior to Occurrence: | ||
Unit 1 in Mode ,5 Apparent Cause of Occurrence: | Unit 1 in Mode ,5 Apparent Cause of Occurrence: | ||
N/A Analysis of Occurrence: | |||
N/A Corrective Action: | N/A Corrective Action: | ||
Engineering Design has evaluated the problem and the following handswitches have been removed from service by disconnecting and eliminating their function from the control circuit. | Engineering Design has evaluated the problem and the following handswitches have been removed from service by disconnecting and eliminating their function from the control circuit. | ||
: 1. 1-HS-1-15B 6. 1-HS-3-47B | : 1. 1-HS-1-15B 6. 1-HS-3-47B | ||
: 2. 1-HS-1-16B 7. 1-HS-3-87B | : 2. 1-HS-1-16B 7. 1-HS-3-87B | ||
| Line 188: | Line 95: | ||
: 4. 1-HS-1-18B 9. 1-HS-72-40B | : 4. 1-HS-1-18B 9. 1-HS-72-40B | ||
: 5. 1-HS-3-33B 10: 1-HS-72-41B Failure Data: | : 5. 1-HS-3-33B 10: 1-HS-72-41B Failure Data: | ||
N/A | N/A I- | ||
I- | |||
,1 'Y | ,1 'Y | ||
-}} | -}} | ||
Latest revision as of 20:47, 18 February 2020
| ML19321A114 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 07/14/1980 |
| From: | Romine D TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19321A109 | List: |
| References | |
| LER-80-089-03L, LER-80-89-3L, NUDOCS 8007220474 | |
| Download: ML19321A114 (2) | |
Text
- ,
- gt-lj ~ e. 47 3 I . ,
f'). , ,
18
- 'l*i C ' App,Ndix A l. .. .
(J. .s .
lf L u L. r,isct r i.,i .a(t.u. a i . > , : . 4 .i ,u.e
' a,oc r ost : 3+s .
""' Lif tur.1 I ( VI fJT fetTf)lt1 LXillillT A c in,s a t09 a ' r a ' e - > r ori ' nt ai t nc vici' iie.ri.< ..ii m L. _.L_L I 1._L 1. G
. I,ITO . , 1 r la i s I sLE.LL.J.d40__LO_L:1.91. 01. 0 0 L.o L-j_0J.0J,Gl 4 L.IL.1 L..IL.1 2
.. .. , .. .. . , .- s -
cevt o ' WS (I.S[n I al l n' .n. .fa,..l.3.1.217..D1016.101.
. .. .. . . 9..! 8 ! O.RI,.0!
. . .. . .7.i.1'.4. l. 8.IO.I, e vt.,, n, :.u . o., 4.,n n.e .a r u .. . ......0 i
i CED LDuring the_ contract.. review,. it was . discovered that.the. local _ control GID Lstation selector _svitches.(C-11 type .10250T1.which.ar's used..irt class _1E_J g_ ; circuits in _the..vertic.a.l pipe chase, aux feedwater pump turbine room,. ._ _ _ . !
A LR111Lheat. exchanger room, gas . stripper room. and. the R11R pump _r.com . lack.J EI.O Lenvironm.cn.tal_. qualification. data to substantiate their required operat,1,op ,
I
~~
EID l.following a.high energy line break. This could lead to operation.in a,1 I, i l,.E'.3,, i degraded mode . . ,
- . .a. .
[ C .K ;, T t B.Rt K' . ;Z I .-.
[ l~1
[_Z_[.. Z.i. i,. n J,, .;., [ .Z .' ' , ,,
- , E., .. .
9 r e ...
. 1 lu :.! l..0 ! 8! 9. I !. ! IO! 3! IL .] I .2 'O!
6_.'.'.',........
. -l.' l. 8' al L,,7. : #. X l': .,' ( Zj',. # I.X j f ,. 10 !,0. l 0 0J [,3 ..
iN. , y,' , [N
'" W : 1 '2 ,J Oj (...;
e ,. . . . t . . - . . . . e... . m, . t F.'.1:'J L. Engineering Design is presently evaluating thin probicm for the proper 1
~
L,I.] Lco rre c tive ac ti_on._. .t.o..b. e. . t_a_ ken
- . . . ..... .._ . . _ . . . . . . . . J
'.1, ;',g.c- E.1'.) L _ . - . . _ . . . . . _ . . . .. . - . . _ _ . . . . . __ _ _ J l m.<,
l
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1 .!
W.' :',' .. . . . . n........, 0_ i ," ' /. c: ........... ......F ~
F, T.1. LF3 I OLo_LOKBl --NA= - ;j [:CF' L. Contract Review l n . . <. . e . . . . .
..........~... .. .... ,... .. 4. . '
m . i .. ,, , . . . . . g, , .
E, E.l I;zJ Os L.Z ! 4,i..
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. _ jA.. . , . , ,j E, U3. ... [2J' ..L. . ., ,
...e. ** . . ,
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NA I L.1'i : ' i i,j
, l
, . .. . . . . . , . . . . . Dean Romine _
I e -
8007220y7 m
1, Tenn see Vc11;y Authority
- . ,h, , ,-[f. . Sequoy h Nuc1':ce Pirnt LER SUPPLEMENTAL INFORMATION t .
SQRO-50-327/80 89 Technical Specification Involved N/A 3
Reported Under Technical Specification 6.9.1.13.b
~
Date of Occurrence: 6/9/80 Time of Occurrence: 0845 CDST Unit: 1 Identification and Description of Occurrence: .
The local control station selector switches (C-H type 10250T) which are used in class 1E circuits in the vertical pipe chase, auxiliary feedwater pump
, turbine room, RHR heat exchanger room, gas stripper room, and the RBR pump room lack environmental qualification data to substantiate their required operation following a high energy line break.
Conditions Prior to Occurrence:
Unit 1 in Mode ,5 Apparent Cause of Occurrence:
N/A Analysis of Occurrence:
N/A Corrective Action:
Engineering Design has evaluated the problem and the following handswitches have been removed from service by disconnecting and eliminating their function from the control circuit.
- 1. 1-HS-1-15B 6. 1-HS-3-47B
- 2. 1-HS-1-16B 7. 1-HS-3-87B
- 3. 1-HS-1-17B 8. 1-HS-3-1003
- 4. 1-HS-1-18B 9. 1-HS-72-40B
- 5. 1-HS-3-33B 10: 1-HS-72-41B Failure Data:
N/A I-
,1 'Y
-