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

/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

ML19326B578
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/24/1978
From:	Shively 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-78-006-03L, LER-78-6-3L, NUDOCS 8004160361
Download: ML19326B578 (1)

LER-1978-006, /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

Event date:
Report date:
3131978006R03 - NRC Website

text

.

O,-

s 5

• ",c,,' o *" "

}

" 5 *"c" ^ " " '"^'o a ' c

""'55' "

[m)

LICEriSEE EVENT REPORT EXHIBIT A CONTROL'sLcCie l i I l i l l@

(PLEASE PRINT CR TYPE ALL MEQU'REO iNPQRMATIONS f ElIAiRiA,fa ol1'@15o !o l-lo lo lo lo lo i-lo lo l@4! i I t il ll l@l ! l@

r 1

J 3 Eng(N5it cgCg a4 LICENSE NuudEM

.5

.6 LiGtNs1 Typt 20

$7 6A T $4 CCN'T 1*Ts L@l ois t o le to L311 13 GI OI3f o t s'I'718@lo l3 I 71 17 If l@

toiii 60 48 OCGE ET 40MatR M

69 lbE470.TE 14 25 AtPORT Q.TE

.Q,

EVENT QESCRIPUCN ANO PROSA8LE CONSECUENCES h i o ! : i IFebika W alu4aha Geam. Gene _ca:b.-r A., cluciha 4Le_

in i

a i

~s a

rm7 tre - s'nsblI a W J 4he. I o W ee or Im w.<u maw cA ven h o i i o n i i skuds deared oN ab de b R ch be. wl" o We.

I t o i o n'w Wi nl -b n u e <eouewce. cass. Reve das m cl a n c e i

rrrriiku de. o wk),i c. he.ialth nY sa[eb as h e. o ri ha~wu i e m i s'i le ofr'44. s\\e.am 3enexaluais draa eh ab 4de.~!

i o n i i h%me.

i C CE CCCE Sb8C E COM,0NENT c0CE

$68c 08 5

iC,l71@ LEJ@ lEl@ lHiTlElXit!Ml@ LEJ@ LE @

io m m

a a.~r....

Sni'.'t

• • d!Pc'

""?"'

..o l*f l 61 t-d l o lo f t.1 W

10! 31 I LI t--J t o_j

'0;;

_n a

n n

a n

u n

n AuEN

.C ON CNPtANT Mg7

• • OU R S S8 i

,CR 8.

MANU,ACTURE.

lbJ@lZJ@

LIJ@

LZJO IO!O!o!oI LH_J@

@@ S dP*L (R@

IBI oI i isi@

M

.4 JS 24 3J 40 et 42 C LUSE CESCR87 TION AND CCRRECrlVE ACTIONS A Wuah 6mhd We. Wo hued dub. E'ndac,s dd'ca4e i,i2i i

a.

i I, i, i !cenc.k. ioh abod 409+ oh b sbd di2weker had eMshd few i a

, i n isome. h'rne. oder b kewdora'ng. A0 skucls m bdh deam.

i j

i, i u tsbam aenerder edmuu un,e, ev-4 )eeer mandaus uleve_ ukasowiu\\lo hhed e

g s

i

&k3WOYm3NMeS%D Dee. Sb (eveOYCd h deSbbhG bik i l y c.y a c h S.

0 iii4

' 'se ii is i L&J@ l oI of oI@ blA,,.m @

natu: h s.e v% ce. "T n.,c....,o,nu cr-

, o,,co... c L.9. @

soccWo N I

I j

3,,,,, cga,,,,

u o

..ou~r e,.cr,.. @ i Lce.1,o,o,.u.a@

IiisI(1]@oo,..u.s.L1)@l n

.. u.s.

I RA I

i

...sc~,/ *

....t o,osan o,c.....,@

litri l o lo l o l@tg_j@l u

I

' '...so

.'t',Nm'4.s lihlleft,tel@l ssca,ric~@%

w o.ia i

u s m o' 9,o'c m ; > = 'rv @

l i hI LIJ@l ws, I

^'

(A,m,c,'s'.'5.'s'c.1,0~@

~acussc~L<

mo o

i on,mool b r'iS N b elv

$((m-asa N w Ee,,RE, RER

,-cNE L

8004160 54/