05000334/LER-1980-054-01, /01P-0:on 800811,significant Overstress Condition Found Possible on Safety Injection Line from High Head Safety Injection Pumps to Reactor Coolant Sys Hot Legs, During Seismic Event.Caused by Inadequate Weld

/01P-0:on 800811,significant Overstress Condition Found Possible on Safety Injection Line from High Head Safety Injection Pumps to Reactor Coolant Sys Hot Legs, During Seismic Event.Caused by Inadequate Weld

ML19338C678
Person / Time
Site:	Beaver Valley
Issue date:	08/12/1980
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19338C673	List: 05000334/LER-1980-053-01, /01P-0:on 800811,significant Overstress Condition on Charging Lines Found Possible During Seismic Event.Caused by Inadequately Sized U Bolts.Bolts Will Be Replaced with 3-inch Pipe Clamp.Support Will Be Modified 05000334/LER-1980-054-01, /01P-0:on 800811,significant Overstress Condition Found Possible on Safety Injection Line from High Head Safety Injection Pumps to Reactor Coolant Sys Hot Legs, During Seismic Event.Caused by Inadequate Weld 05000334/LER-1980-055-01, /01P-0:on 800811,all Three Reactor Coolant Loop RTD Manifolds Determined to Be Overstressed During Seismic Event at Respective 2-inch to 3-inch Reducers.Cause Unknown. Each Line Will Be Reinforced by Anchors 05000334/LER-1980-056-01, /01P-0:on 800811,discovered That Significant Overstress Condition on High Head Safety Injection Lines to Respective Hot Lines Could Occur During Seismic Event.Caused by Inadequately Sized U Bolts & Undersized Weld Supports ML19338C672
References
LER-80-054-01P, LER-80-54-1P, NUDOCS 8008180411
Download: ML19338C678 (1)

LER-1980-054, /01P-0:on 800811,significant Overstress Condition Found Possible on Safety Injection Line from High Head Safety Injection Pumps to Reactor Coolant Sys Hot Legs, During Seismic Event.Caused by Inadequate Weld

Event date:
Report date:
3341980054R01 - NRC Website

text

.

O

• Q,

setrass m =r on tvWau. atou.aso iw o no.n convaot etoce '

1 1

1 1

1 I

] l r i A l 5 lV 15 l 1 l@a010 j-l 0 l010 l010 l-l010 l@ 4 l1 l1 l13J_l@l.., mi g l

I

,o v u.. coo.

uum -.

=

=

uc.m n

)

gL s 10151010 t o 1313 l' 001811 11 l a 10 l@lo l a l i l 2181 o l@

ooc.,

av.

~=

EVENT DESCRePDON ANO NICO ADLt CONSE OutNctsh 11 It has been determined that a sienifiesnt overstress condition exists at one 1

]1 location on the safety iniection line. from the Hich Head Safety injection OfMST) l I pumps to the Reactor Cools 6t System (RCS) hot fees. during a peismic event, fenn I

][ of this line could result in loss of Ir.GI.

If SI were required, core cooling couldl

@l be provided by few Head Safety Injection (LH*T) _and by auxiliary feedwater.

1 i

I i

@t E

.1 "aog" M

cowo ea coes isiIJ@ W @

@ l5lUIP101RlTl@ [Bj@

l v'"**

o

@ =u==o3 'oJ k=1 Lo ' ' ' 'J W Lo ' ' '

W W

LoJ

==.=. ~m m.

IoIoIo@IoI

=w

.e:m, v.=

W@

Lxil@

LA._J@

l z I 919 i S l@

pL.z_.1@ p@

L.z_l@

=

a a

a 31

=

cAust Dtsent*TioW AND Co#REcnvE ACTtows 7

] I The suoport weld at this one loestion has_ been iudred to be inadeouste.

The f

]l cupport will be reinforced prior to unf t startun.

A final reenre vill be suberitted I g1 upon completion of this study.

I 1

I DI 1

I QI

'T

's eone n ov ansratu. h

• EE o.scovsar oss== rio. @

Q W @ 10f0{ol@) Desien ~

l

@ Special investicatioes

- l as so nmodifgcation 3

a ge,_,,

g,,,,,

SN aCYmrv h toCAvo.e os mettAst h to@or atu att d)udr

.t Lz.1 x/^

I I

x/^

l

• ' m,.E. 81 1.

g 10 I o I o l@Lz 1@i

.c.,r w.

u "I^

l as u

a, gg, un-no @ r/A

~

w.m.

l

] I o f o f o t@f

ha.o-gude..our g x/^

l B..Lz_1@l i

• • ac usa catv 3 15 h m-,

l

,f*"L'*

N/A l

11 I i i f I I I I Ii I

• se e,

ae. ;

lo,

=

W.

S. Lacey 412-M3-8525 l

8 0 0 8 1 8 0 h,,,,,,,g,

{:h