05000313/LER-1978-005-03, /03L-0:on 780302,steam Generator Tube Indications Exceeded Plugging Limit on 40% of Nominal Wall Thickness. Caused by Defect Near Upper Tube Sheet.Tubes Plugged

/03L-0:on 780302,steam Generator Tube Indications Exceeded Plugging Limit on 40% of Nominal Wall Thickness. Caused by Defect Near Upper Tube Sheet.Tubes Plugged

ML19326B577
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/24/1978
From:	Smively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19326B576	List: 05000313/LER-1978-005-03, /03L-0:on 780302,steam Generator Tube Indications Exceeded Plugging Limit on 40% of Nominal Wall Thickness. Caused by Defect Near Upper Tube Sheet.Tubes Plugged 05000313/LER-1978-006-03, /03L-0:on 780305,studs on Lower Steam Generator Primary Manway Cover Sheared Off.Caused by Crack of 90% of Stud Diameter.Studs Ultrasonically Checked for Cracks & One Removed 05000313/LER-1978-007-03, /03L-0:on 780308,ventilation Dampers Failed to Seal Properly After Actuation.Caused by Sticky Air Supply Sys.Bladder Pressure Gauges Replaced & Air Supply re-adjusted ML19326B575
References
LER-78-005-03L, LER-78-5-3L, NUDOCS 8004160359
Download: ML19326B577 (1)

LER-1978-005, /03L-0:on 780302,steam Generator Tube Indications Exceeded Plugging Limit on 40% of Nominal Wall Thickness. Caused by Defect Near Upper Tube Sheet.Tubes Plugged

Event date:
Report date:
3131978005R03 - NRC Website

text

_ _ _ - - _ -

~

rgq pp~mm o

f,RC 8Omm 3ss U. S. NUCLEAR REQULArORY COMMtsseON t

LICENSEE EVENT REPORT EXHIBIT A CoNractStocol i

I I I I l@

mtEAsE,nmr ea rves au. aEOeaEO m,Oa=AriOm lo t i l l A I K I A I H lo l \\ l@ill o lo l-10 lo lo lo lo l - 10101@l4l 1 l i 11 I l !@l I l@

P

. 9 UCENSEE Co0E le Lact %st muueEn 29 UCtwst tyng ao ts 44, s.

CON'T ITT'il f,311. @l o t s lo l o 1o 1311 13 GI O f 61 ol 2.I'I18@l013 it I l 1 l? l@

I 60 8,

DOCu tT NUM.gm 6.

69 EvtNTQATE 18 75 REPORT OATE

.0 EVENT DESCRIPTION ANO,408 A8LE CONSECUENCES O'o rim IDusk Ase&e iw_,hk d oTc6 "A bbb w hk G.c 4.I8. be b6 i

a.

raTn ikd 6 heabbs eu..edi6 Oc. o.hu.A., hm'.h d 407. d b wwik-J hwi a

ss a r o i. i wai\\ Aickness. 'be e bbs a<e \\oca.h1 me.vl 4.4ke bk 6 wMat io isi idefect wev de um< bh. sheek Che Lk 'sc locded ih Le_ oe<', chew.!

io s i iThue were v.o Abedhe bb.s iledike) eLmAe,43. MNbselir$i a

to_w I Au,.a.dioL.Tkue ea r u Awe % ne a,.da,th. he n or sa4 b i s

poq ias wme d he delecb %ks Were i

nawJpeMc5inhy'

\\es9m

'aa" M

L,2_u.I IO.1716 l,b, @ stal,,l.j @ IH ITI E.1 XI O-lBl@ t,,b;.

.::=

c*

c.,0

.~,-oo.

,u.

@ L2] @

i i.

n a

L vt4Tvfem At omf o Coot

@,a'tm/moug'_l'f181 l--l 101o161 1-1 10 l3 1 I L-l L-.]

LQJ s

g a

n n

2.

2.

n n

n

o a

u 1

j w: w,n:

s n?,',w LAJ@

l C-I@

L.2_j@ Iof olo @Io I

• .,~,

  :

,a" :. ~,:d,.cw@lBfoItIsl@

2",w::,,

.ou.,

lYl@

LH.j@

2 2,

2 v

CAUSE DESCRI,110N ANO CCARECflVE ACTIONS h i, i o i (Lee ddee. hic bks 1s-is, af-11.11-r7 (b* -Twk.*Q es e sbMA.d m n'w 4Le n%Jel 3'A Asaa.c.hk olw. Aw albhieM I.,% ms ibucted w i r

s i

i m iT, s T>bl e 18-2. xd bb.s 'M-IC' a.1 ti - 3 de<c Ned'.k el u dele < h'd el m IAw all'.hJw.al 11% wu Aw_ded.TwL. vi.i1 u.s <m<el Ju w.twei i i 4&e Jded. Ah0e 4d,e we<e Auedal s& leddl wwh.A.

m,.,

as u

's'r'.'IYs' orwenstatus @ EsEoNav#

o,tcov,=v ossemierSio@

secwea liIslLHj@ loto101@ldA I

L.3. J@l hsMice L-

• m I

.,.,,,,,, g,,,

n i

u~, o,.c,v, @ I oc.,,

o. m..., @

f7TTl [3LJ @. o...u,L1)@l nA I

Rx 1

". '." ' '" Nk" enc.,,1,o~ @

,t fiTT1 I o Ie I o l@ll.j@l u

I

... sos ~ d',~J,i s 1 1 1 l o l o l o '@lc.,<,,,,,,o-@R A I

'go.oaof',..c,(o,.nuryg t,.u.2J L.IJ@l wk I

,o DE SCR,PT,oM

'S$u,f61 o

ts.

u i i iiiiiiiiiiii r o 3 9 40 OkisN. %. k seil m -zse 6.

.9

.0 e

N.E c.. E,..E.

E

\\

80041GO M