ML20084E252

Rev to AO Re Core Spray Injection Line through-wall Cracks. Proper Locations of Crack Indications in Error on Drawings. Correct Drawings Encl

ML20084E252
Person / Time
Site:	Dresden
Issue date:	04/07/1975
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20083L276	List: ML20083L281 ML20084E252 ML20084E259 ML20084E263 ML20084E266
References
235-75, NUDOCS 8304140480
Download: ML20084E252 (3)

Text

__ .

C:mr^.wcalth Edison

[' one fikJwosal Phra, Chicago. Ithnois -

'cv', '

Address Reply to Post OHice Box 767 Chicago, Ill.nois 60690 EBS Ltr. #235-75 April 7, 1975 Mr. Je:nes G. Keppler, Regional Director Directorate of Regulatory Operations-Region III U. S. Nuclear Regulatory Cornission 799 Roosevelt Road Glen Ellyn, Illinois 60137

SUBJECT:

REVISION TO AENOR'GL OCCr?.RECE REPORT ON ERESDEN UNIT 2 CORE SFRAY DiJECTICN LIf:E THROUGN ',lall CF2.C1'

Reference:

1) Letter e78-75 from B. B. Stephenson to J. G. Keppler dated -

February 6, 1975 --

As a result of an inquiry into the actual location of the dye penetrant indications versus the weeper on Core Spray nozzle "B", the. drawings were reviewed for their accuracy. It appecra that the proper location of the indications are in error.

In addition, on "A" Core Spray Nozzle drawing, the clockwise location of the visible weeper was also revised to reflect previously reported infonnation.

Attached are drawings of "A" & "B" 10 inch Core Spray nozzles with appropriate chenges made.

Additional information concerning the metallographic analysis of these safo

, end/ dutchmen sections will be submitted to the cc::: mission once it is officially received by the station.

i 1 -

].)Ll'Q.2~

• B. B. Stephenson ,

Superintendent ,

EES:smp File /NRC l

k t

l S. ,_

f s I

B304140400 750407 .,.

PDR ADOCK 05000237 PDR i

/ g

{

~

.. y+

. -- - . - - . -, . . - . - - .. a: . , , , . . .. ; ,x , . -

~

~~

%s...

-\

"O 10" CORE SPRAY N0ZZLE ]y

.- 1.'

"A" LOOP '  :

j i VESSEL 7a i t

l CENTERLINE OF i CEllTERLl;JE OF DUTCHMAN TO SAFE CENTERLINE OF SAFE

,X PIPE TO DUTCHMAll WELD EllD WELD END TO N0ZZLE WELD N -,

I g  ;

CLADDING l

/ L i

4J u . s

.r- *^ THEF. MAL SLEEVE i

['f l

Akj.

11: 4 5- ---  ;.

i

-PIPE- h:DUTCHMANi,! -SAFE END-

'I ; E -N0ZZLE-

~~

1~~~ .

10:00 J l-c -c .t "

~

j

-I . @ B-5 --- [. 1 3:00

~

C ~~ ~ : '5  !

8:00 - -- './i

)

1

- - - - - - } .:l --- - ---

4

- - l I.

-=---e

_. r

,I J

• Th g

I-PIP"' -

/ v

- N/ i N0ZZLE M .

A C - Location of weeper approx. 1/8" on pipe side of weld at 11:9 6 In centerline of Dutchman'to Safe End weld at 3:00-9/16" in Length.

B G - Locaticn of crack' approx. in centerline of Dutchman to Safe End wcld at 8:00-5/8" in Length.

C g- Location of crack approx.

- - . . , . . - - =

y

, , i E , '  !  ; ,c ,' \

~

.~ i4 r

,1 a _.

E V

O e E

E .

G L -

N S -

I -

D L -

D A -

A M

- ,.R L E C H T

\

\ \

y /

\  %

n

+N /

_" a.

c N .

- ~

~

h c

t

~

u p/

- ~

^ '-

D

\. =

- ^

- n _

o T

^

~

w

=

=

d

~ l

-= e

- = E w L =- L n E Z a .

=

S S

~

~

Z 0 m e h d N

E =

- ci V ~ t s

= u

~

L _

E d ep Z

Z = - L Z

~ ' oi

- . ~ t p 0 -

Z ~

F :t 0 e n O _

N p o 0 __ _.

~ i ET t =

- ~_6

t pd i

iD  ; -. = f e LN 'I  ! ,( , , ;t ow RED . , ;.' ~. 4' ,

E L 1 .

.a : E' TEE N ti 1.d , . ef

- NFW 4 n o

- E L

Z EA CS = '%

=-

i l

r n e

Z @* - ei 0 f t l E -

n r 1

F E e e Y A F ct A FS A

^

n R P O S m e P O O -

- c r

c S O ET - ,,* -

L  ; J} ]., ) :l*

f m E

t iND  ;' ' eQ 5, ~ o R LAL

~

' 6" r "B f O RME J ~

1

" /

C EHt -

TC c 5

" B"

'r_

! TD N . /.

0 EUN A x5 1 CDE M H o r .

C p x FN T p o OA U a rp M D Ei l

t t

C .

)*3

,r7!;:3;t, .

! .i i .

n p o a G'

i T

_ LUD i RDL t E E a n tot l c o i i iT t

E. d t E . . P

. CE - I n a P ~

P i c

,w

- I P

~

~

~

~~

~

-r

/ r'd e n p i e

i

, - eT

_ ~

~

E wP f f 0 0 P

I o o 0 0 0 3 P n n 1

0

o o i i 6

1 1 t t a a c c

' o o L L GG

,' .j'  :  :;

• 4  ! 'l l

.:l! ,5 l  !