View source for 05000366/LER-1980-139-01, /01T-0:on 801008,AE Notified of Improper Placement of Anchor 2Gll-RAD-A91,resulting in Seismic Vulnerability of Containment Isolation Valve 2G11-F020.Caused by Failure to Follow Original Design.Order to Close Valve Issued

{{Adams
| number = ML19338G048
| issue date = 10/21/1980
| title = /01T-0:on 801008,AE Notified of Improper Placement of Anchor 2Gll-RAD-A91,resulting in Seismic Vulnerability of Containment Isolation Valve 2G11-F020.Caused by Failure to Follow Original Design.Order to Close Valve Issued
| author name = Coggin C
| author affiliation = GEORGIA POWER CO.
| addressee name = 
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| docket = 05000366
| license number = 
| contact person = 
| document report number = LER-80-139-01T, LER-80-139-1T, NUDOCS 8010280377
| package number = ML19338G047
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 2
}}
{{LER
| Title = /01T-0:on 801008,AE Notified of Improper Placement of Anchor 2Gll-RAD-A91,resulting in Seismic Vulnerability of Containment Isolation Valve 2G11-F020.Caused by Failure to Follow Original Design.Order to Close Valve Issued
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000366
| LER year = 1980
| LER number = 139
| LER revision = 1
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

=text=
{{#Wiki_filter:U 77)
LICENSEE EVENT REPORT CoNTF oL BLOCK: !
l l
l l
l (PLEASE PntNT On TYPE ALL REQUIRED INFoHMATION) l Gl Al E l I l H l 2 l@l 010 l - 1010 l 0 l 010 l-l Ol 0 l@l 4 l 1 l 1 ] I l l j@l l
l@
o i 7
8 9 LICLNSEL CODL I4 lb LICENSL NUMBLH 25 26 LICF NLL T YPE JO b/ CAI b8 l
ksn% I L i@LOI s ! 010101 a l 616 l@l i 1010 l a l a 10 l@l 1101 al 1181 Ol@
?
8 60 01 DOCK E T FJUMO L H w
b'J LVLN1 OAlE 74 75 RE POR T D AT L FJ EVENT DESCRIPTION AND FRoBAULE CONSEQUENCES h 10121 l During normal power operation on 10-8-80, notification was received fromi 10 l31 l the AE that the drywell equipment drain sump discharge to radwaste pip-l
[ TIT 1 l i ng is not seismic beyond anchor 2G11-RAD-A91.
Therefore, outboard con-1 fii 1T1 I t a i nme n t isolation valve 2G11-F020 is not seismically protected.
Jhis I
lo lc ] I means tha t prima ry containment could potentially be-breached if an i
Io lil l earthquake, LOCA, and f ailure of inboard isolation valve 2G11-F019 all l
10 i l occurred at once.
This is a nonrepeti tive event.
I 7
8' 9 60 SYSTEM

==CAUSE==
CAUSE CO*/ P.
VALVE CODE CODE SUBCODE CO*.iPONENT CODE SULCODE SUBCODE lo19]
l Ml Al@ l B l@ l C l@ lP lI lP lE IX IX l@ l Al@ LZ_J @
7 8
9 10 11 12 13 18 19 20 SEQUE NTI AL OCCL'R R E NCE HEPOHT HLVISION g g.qg EVENT YE AR REPORT NO.
U)DE TYPE N O.
O,"(g.g; I 81 01 l-l '
l 11 31 9J l/l l Ol 11 lTl l-l l 0l
__ 21 22 23 24 26 21 26 29 30 31 32 TANET A 1 N O Pt T-f L1 O HOURS S [ i F F u.
S PPti MAN f LTi>RER (D l G l@[F_J@
[Z_j@
IZl@
l 01 0l Ol 01 LYJ@
l Nl@
l A l@
lPl4l3l2l@
33 34 35 3G 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h li 101 IThe even t is due to anchor 2G11-RAD-A91 not being in the original designi
[ TIT 1 l l o c a ti on.
This appears to be an installation error.
Corrective action I is121lhas been the issuance of a standing order to close valve 2G1:-F018 in I
li131 l the concurrent event of an earthquake and LOCA.
A design package is I
li ta l l expected f rom AE to restore seismic capability to this pipe.
I 7
E 9 80 TA
% POWEH O1 HE H ST ATUS ISC Y
DISCOVE RY DESCRIP110N LthJ LrJO IOl9I8l@l NA l
[D_j@l Notification from AE I
AC TIVI T Y CO LENT Hr LE ASE D OF HELE ASE AMOUNT OF ACTIVITY LOCATION Of F1EL E ASE li 101 LzJ @ LzJ@l NA l
l NA l
s 6 3 10 11 44 45 80 PEGSONNE L f EPOSUHLS NL'Uof H TYPE DE SCRIP TION l i i il 101 01 Oj@l ZI@l NA l
n H sov.J',N, A S N o.,n c H nE SCH.P T ION I01010181 NA I
i 1
h 9 11 12 80 t 055 Of On D AMAGE 10 F ACIL ITV 14PE Ot SCHIP110N [T
l Zl@l NA l
7 8 9 10 80
,mU,,@;L,,,0N @8010280399
""c"" = v
[_tij l
NA I
lllllllll11ll5 o
lo m
.r, 80 x NAvt ce Put Pant n C I. CoggindupL_ P1 t. Ena._Scty.
PHONE 9l2-3b7-I[bl

-. ~. - -
i.
..V 4
2
:- LER #:
50-366/1980-139 Licensee:
Georgia.Fower Company Facility Name:
Edwin I.
Hatch Docket #:
50-366

=Narrative=
Report for LER 50-366/1980-139 4
4 l
During steady state power operation -(at 2393 MWt) on 10-8-80~,
notification 'was received' from the AE that the drywell 4
equipment drain sump discharge to.
radwaste ~ piping is not scismic beyond anchor' 2Gll-RAD-A91.
This was determined by computer reanalysis of the piping following surveillance walkdown per IEB 79-14.
Therefore, outboard containment isolati.on valve- '2Gil-F020 is~ not seismically supported _ such that. p r im ary ' ' c on t a inm e n t integrity could be-degraded by an earthquake.
This is a nonrepetitive event, and there -was no effect upon public health or safety as a result of this event.
j Continued operation in the present condition can be justified as follows unt'il:t.he fix can be made:
l 1
1.
a seismic event would. be required to potentially cause i
the loss of 2Gil-F020;
. %)
2.
the containment isolation valves 2Gil-F019 and 2Gil-F020 i
close on high drywell
: pressure, main steam line low pressure,'or low reactor water Icvc1; i
.3.
in case 'of a single active f ailure of the inboard valve
:2Gll-F019 remote manual isolation capability is provided i
.by the'in-containment-valve 2G11-F018; 4.
the-probability of a concurrent seismic event, a -LOCA, 4
and a
singic active failure of valve 2Gil-F019 is extremely remote.
In addition, remote manual capability for the line.is still-provided.
Note' va lve s ' 2Gil-F019 and 2Gil-F020 were erroneously reported in 'our fprompt notification and telegram as being normally l-closed.
e f
The

==cause==
of the piping not being. seismic is that anchor.
2Gil-RAD-A91 is not in-the original. design location.
This.
appears to-be -the result of_-installation error and is a
nonrepetitivo event-Immediate corrective action consists of the:
issuance off standing order 80-52 which contains'
. ins truc tions to
'close-in-containment valve 2Gil-F018 to-1 isolate-the linc 'in the ' concurrent event of an earthquake and LOCA.
Site is presently awaiting a design package from the AE so 'that a design. change request can L be initiated to restore seismic capability to th i s-' pipe such that valve ~2Cll-F020 will the scismically' supported.-
i-u
)
w, a.
}}

{{LER-Nav}}