ML19322D345

Nonproprietary Version of Memo Concerning Inspector Evaluation Re Compliance Rept 50-321/69-06.Machinery Malfunctioned & QC Sys Failed to Detect Malfunction. Drywell & Torus Are Major Concern

ML19322D345
Person / Time
Site:	Hatch
Issue date:	12/23/1969
From:	US ATOMIC ENERGY COMMISSION (AEC)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19322D327	List: IR 05000280/1970001 IR 05000321/1970002 ML19322D326 ML19322D330 ML19322D331 ML19322D332 ML19322D335 ML19322D337 ML19322D338 ML19322D339 ML19322D340 ML19322D342 ML19322D345 ML19322D346 ML19322D350
References
FOIA-79-416 NUDOCS 8002110547
Download: ML19322D345 (18)

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During an early nssion with W. McNaughton, c'*c Uciding Engineer and l

.R. T. Purse 11', Welding and NITI of Stone and W st.er, Boston, and J. L.1 erkins, VEPCO QO Engineer, the insnector questioned the policy on receiving inspection..;

at the site. Purse 11 stated "We are paying the fabricator and Westinghouse n. Q..

2.. :..

g.

..-o

.~

,jo s

, to inspect the aroduct. erd assure compliance to the drawings and specifications,7

..gu En.. -

2.t.. M.e.Myu.. r

-.,=.W - %n. 1

, n.: f.

.v..~

,. g

-e 7-g e.

_,_ besides we are paying for Stone and Webster to' provide #survei11ance on the%'C' '2

~

f

-, a ~,.

,y. r.. m -

' gf.. g.j, y.,- / ;.. ;. p. '.

r

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- s-

+-1t shop fabrication and we consider this 'to be sufficidnt - we don't intend toA...

~

~

~;

1~

reinspect at the r,ite except for accountability and damage."

l

~

The inspector asked'to see the Reactor Coolant piping which was manufactured 1

by Southwest Welding' for the purpost of verifying the applicants confidence.......

L-a kk OBSR. VAT /oM of Wott PEEfoR.A/AhlCE.

4805. OS (Ub IN-PRbcESS-I INEPacTID WAt P2 c.Po2.nM_b) l~

m - g % --,,hl r c. _, > %, m.

L.

b

.c_.,

.1

,.s.

.y,,g.,...,

...,.,.#.w.--

y.

.,,,:,.,,, g There were 15 spool pieces Nos.1, 2, 3,.6 and 7 comprising three loops. The

',' applicabic specifications' requires the piping to be AST11 A376,TP316, Scheduid-'"

~

' ' ~

l.

140,5etc., and fabricated to ASA B31.1 CO N-7 and ASME Section III, etc. After O

~. '

t' removing the heavy vinyl protective covering, the inspector observed the

(

following deficiencies which were common to each of the four of the longest. r r { -

snools insocctedr; 7 ~~

7* 5',

, y

" Q'Q

'~

~

~

l g),

(e9 The weld surfaces were as welded - with prominent weld ripples.(cg 0I 7l

.~

()U)6l O 'T.2~.

';.? T:.c m..L.a..

~ 1/' L.:.

h ' = -i..:.)..

. w w....:.

.... a -w.

..u- ::J 251?h 4e@ USAS B31.1.0 paragraph 127.4.2 (d) and ASHE Section VIII - $31 T '-71.

e i

.< fM[,..

' ~ ~ ~L.,

?.?

l i

(essentially the same). Stated in ASME Section III IX-333 (a)

. ?

.:s.

. -. i:,. 4

.;.w y_=5LL '. 3

' p{lQQ/

y Welds to be radiographed shall be prepared as follows: The veldf. g ;., 6 i

a t. %;..:.

~

!.....l.....,.,.._....

ripples or veld surface irregularities, on both the inside and--

'C~'

outside, shall be removed by any suitable mechanical process to such.}.~ '

g

-.L v a degree that the resulting radiographic contrast due to any.

g.g.

l Y

m,.

!{

irregularities cannot mask or be confused with the image of any,.,.., ;[ j.

s

- Al'so the weld sur ace shall me'rge:RWZ.Q. :.

,g ji o.<,

unacceptable discohtinuity.

q.

Q,Q,

,-n -

- - - ' gL.Gjaii_

g'

) ' r-,w,(.,L; smootDfy On30 Glbo pkGo curl @ co ~...

C'-'

Q

• l\\

F *7)P NtW E

O h$e

.Y'i ;((*

THE CEIN YDU"E.UELIT IS 4 Ihl[M MAX The finich;d surfcco cf th'2 reinfcreement of c11 butt w Id:d j51nts),[3',('g,-

O P.

1. J

. q s

a. :.... s.

a.

~..

a

, s

g may be flush with the plate or may have a reasonably uniform crown'iT..

... %. ',,;.; c -

..~ n.. --

s. :.:...

g, ss~

s n-a..,. v

.y.,.,

not to exceed 5/32-inch (.156-inch) on Mat.e over 2 inches,(mi.n wa11d. ige.'; tI

.. r

..u s: y.- +.

', -m,

4:%.4l2e.mr.9,.:

I ". J : h &;.:.......KN;. j

. 2ds specified is 2.215 inches).",'5 7:...:- i:

.~..- W. +, :,:. -n

,i Pt ".a. :'. : 4 ; 7 /'W.

,- ?. ~C. S

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co c-g The inside of the pipe was not cleaned and contained crit, dye penetrant developer, rust spots and one, spool (FC.1) contained approximately 1/3 e

.// / 4..r 1r

[*P cup of discolor d water. -- W8 P'hin/.c4m,E '

C #ME r-ct

~-

%,-4

• '.bpy., '

.u -% *l:3.-y ';?;l V'.].f+-q,....ly.J g T.."Y cft The Westinghou'se Specification for shop fabrication of the reactor coolant-g :. m.;(-

.[-

.. f.

s t.:.-

~ ~.

L piping C-676343 states, "The shop fabricator shall clem the outside and a

~

1, inside surfaces of all finished piping subassemblies in accordance with i

3 I

WPS 292722-1..

l 6 g The inside of th.e butt weld of the straight pipe sections piece 7 loop 1 I p

)

g(c)(,,N'4 - spools were also ground out to ap was ground out 2-1/2 inches wide and 1/4-inch deep. Three other similar o

j l

No. I shows. the concavity and the specifi.ed weld preparation.,,The extent

-s

~

s s

of the grinding indicates that' the grinding included ff the removal of j

4

~

I the consumable insert and indicates a defective TIC root pass which had i

't -

~,

4 to be removed. No repair was made and no deviation or //fff/ change

)

4 request was.noted on. the source inspection 13 port. Specification C676343

....m

...m m.

y j

.., s.

t paraa.raph 1.1.2 "There shall be no deviation from this specification or its..

t references,without orior written approval of.U_AFD.".; O-J'A87 h.

'3,'[*

7M wn L.D ALEA.DDas N'07' COA /)*0rs.f ~7~o JJL Dgag ff%og s.

A T ~3HOWN, DN.CC///2n-A/2:7 2...s. 4 -.....

...,.. y.g. a s._.

4 LSAS B31.1.0 paragraph 127.4.2 (e) Sections of welds that are shown by - -.A.

(

u radiography or other examination to have any of the following types of,1N.

c.

s y

... e.......

imperfections shall be judged unacceptable and shall be repaire.d as proh,v.P,

i

3..: ;,,

2

s nta..., h vided in paragraph 127.4.7 - 4.

Concavity on the root side of full 4.... ~ --...

a g,

,e

.e;

-(_-

r ' 3 ; ;, n,

.;J.2.; ;,

..,;n l

l penetration girth butt welds where the resulting weld thickness :is less

. q.

l l

. _._ y z

l than the minimum pipe well thickness required by this Code. Weld rein-s

n.

l forcemnt up to a maximum of 1/32-inch thickness (the weld in question has.

\\

n,

......w i

1/4-inch reinforcement)..may be considered as pipe wall thickness in such j

. ; \\ _ :.." ~m ;. k., d.'p:f t'.'. NE L*ltf ~ *

• Gi%.Q#%.' Th

^

f..

casesg4 ~ 1 ' I t. 5p o

- cgp;.g..nu s.-

,,,,,c @ g y. f

'.i /:p M.4 3 A.) n. M Ti<.R l..n :. % 6 Q.~a. q.'...:

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l

.. ; 2

,-- &, m. 'u;".i g ? '.~n -.i. p;gV %c '...,

..,W,. X 7.,.:......

V V

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.c; s...

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4.. t.

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- - '.'._._r...._.l.

a l ;. -I. N2. l.

.. 9, A a. ) 7.,......

• [4:' y *~ '.'v~.56

_..- 2 } '[- 7 J,.

• ~N p."*., ~

s.

m.m m %m... _ e.n.._... y,.,... h. c ;,.,.'s

~ w. ; q u. &..:

p,; A.. m q: a ca.w 6 w ra, m.-

m.r.

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t

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c.=

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..,.--,q

, 00 Report Nos. 50-200/69-8 /...

-?,-

i 1;

, 'L 1. ' '

=-,W. 3, 50-281/69-8 %. m -

s.

/

s u...

+.

h-

_ ' ' ?

[

.. A --.

f.. w;*.h,x.m..

w..* ; h.- h?_. Q %,..,'

.,. ; w.

f

g. a,. m.

Rapone csked the Compliance inspactor what he had observed

~ l

. y.g h~

and after detailing observations, Raoone stated that the'.'. *.

J

• ~

findioss were in accord with S eyers' repcrt 'and, coded Mat *

.~..~-.4.

r

~~

j he wculd ec1cpheno his hoc office and report the ' situation.

Cn the last day of tha inspeerion, Perkins stated that VE300 p.

had authorized SW to iner.:sse its source inspection rermntel..

j l

i

{

- - ~. : %...,

c.

l l

2.

Vicm1 Increetion % {

.o t

t g

Tlie 'inside of the pips var. not elecned and contained crit,.

~

a.

8 i

dye penetract devolcper and rest spots.. One spool (FO.1)

I contcined appro:.:i=2tely one-t'nird cup of discolorad veter.

W

~

- 's u e

.t ^

p.

8 T1.c Ucetinghouse specifien:fon for cbop fabrication of thc.c. :

.w r

reae::cr coolant piping, C-676343, states, "The shop f:trienter w ch:11 cican the cursids nd inside curfaces of all finished..

g

~ "

piping subsiscablics' in cecordance with EPS 292722-li,+ v.. ~ n m j

a

~

\\

b.

Finish =cchined veld end vrcparations and ground out

-lg,g deficicacies were 250 Yds :. ndasered with a Surf-Chek 6.'..

roughness standard cenic:uing to !.SA-346, St.E-13L STD-10

.~

E Drcuing Specificatica 49CB932 states, " Finish mcchincd,- -

veld end preparations shall have surft.ce finished not in -

exeess of 125.R25."..'.:

%. g. J.:h,

. :: J _~. ~

~'

7

..n.,w..

.. a. u-..a, ~ n,.

Identification was matal semped on the pipe and fittings 7".'1','"_P.

c.

I in conflict with S ecific'ationC-576343, paragraph 5.7.2, yft which states, "He:henical sta= sing is prohibited." ASTM 7.,, 4 - y

).

t A376, par:Scaph 11.2, states, "No steel indentation stanping,%Ihf.

j.. M. 2. L. ~

. shall be done without the purchaser s consent.., g-. u.,,'

e s.

s...s.w.e.. o a

,_.m _.

s.

3 t

. e.,. ev... u., x,,

d.

An.040 thickne'ss eenetrcoeter was found taped to the inside ?,MJJ of spool piece No. 7..The pipe was sealed., Such a %issile"gJ.

constitutes y potential valse ualfunction.Mr;;LQ,;y.yy.Q' g..

'T.'U.^n.N m.1l.

!- "s " U. - :1:.7 u w 0 ~ 2 W e]!

1 Crinding'of. defects was perfor.ced in a nanner uhich ",(burnished *x&.i.,/

...e_.+..

... y.

,,m.

- f I

a.

. p~ ar..w S.. p -p.

a,.

-. e o, g e_ 44.. g 1 7:;..

c. 1.- u -J +y t a met 9_... y.

..y.

i

,.n.

~

2y i

~,

.~

.. as performed with carbon steel charged it.

V So=e of the grinding w'ses,whicGesulted' iu rdst's' pott. ' The""~~;**'f f.

F....-...._-

. _.a

'~~

~

grinding sheets or di l

^

E cppliemble fabricetion specification does not address itself:,.

t to this deficiercy r.or does it instruct the fabricator not* ' f.W '7~-

~

to use cerben steel uira brushes except by inf,crence in. /' 1 %

{.

Section 1.1.3 of_ Soca.ification C-676343. - "...' work =enship 4 r j <... i.

1 shall be, satisfnetcry for the design conditions specified;f or es may be required by ec: son usage of good practico.a.,.,. R., w l

. Ei.

8

.....,y.-

.r m;a -

..a,.m ;g g y p..:..

..j.:!;.L., c,q. -

4.m...s

~.

~

..: p? W :qp.p.~.a:x.n.m pp. m. ;Q

.s y

. a ;.

.c-w *m;W

.,~ a.7..

t r-m~ t e.t.;.M~.G

.a

~3 w-o+ ;...w

.u.

.1

- 3. cr y

_M._.QM...W'dp6,Md_, v.

u... c:%,..,:pe, q t.;y:* e-;..: c...@.~

e,......&,._. #~;..,,_ m.w.n.

s

. m,:,-.c.-.A.

Nf..

. i. j'v.Q-Y, :.....-

w.

- ~.. -

-=

.... f x i c We

/..-

'6B qM

..,.. G; s:

eo w..

y,..,

W

x. a p., ' m-

... ~. -

< ~ :7,.u:,- a gr u,...,*pm ; s. 3. ~.,..

n.

. r>. :%w. ~

w...w. p. m.: pmgz,.mW mJ

.g g, _ g..a.

i

... c. n g, q, 3.... q ;..q. w.-c g y, g,e,f *c C p.

~

.,._.s......

m q.{m%.'Q'T,r:%,.

? m. M M.g g -;y;,:] ~;if.

" G. -i 1. 2... s. ~=. d. i p :. % p_ p.;. g ;C.J y:-4 p :

~. ;.. f h-~

i

%m~:.P. [W:e,

_, c n+tQ.4. a c.T.. :4

h..

• L U$~.

,w g. g.

m

.... e.

c

/

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Arc strikes were obs.crved en tha pip 21D and on the insida of th2 6,-inch Db diameter attachment to the 27-1/.2-inch pipe section.

i

\\'

}

'~

~

~-

04 ' ^

The Westinghouse fabrication specification does not address itself to t,-

a.-

.,,A....

n

..g :

.., :, V.;.-

~

- ~ - -

• k.'..'d* *~..',;:tbis de fic f ency.} 7 :,

g g pg. g. f p z p,;,.

g.,e.-

de VA E 4% d/ m/. /l $ Q...s75 a ? Grc M N ?

4. -... -. - _... _ /...

A 44r wieb cnok wo$, hady/eeak epa e6da/ eAgemf Be9sd 7'eism

. 6 ennew aa &,ers way a4 a6

&ad/yan AvAodeMeu ML MG e

are p._.

h e

Y 6d oru.aa..earbs ae& Mare &ie mi?Vea

,.....,...,eg.,Nc.;.,....,

, j 7.y g,,,,

• e

.s-..

S hl f Y

/

re-se / s 76me? peM &

edh or meh i..

e_

.2..

i

-e

• ~. -

p<

..,,a..

.,......... a 2.m..,. :a.

,...,,,..:.....,u._.,..,,.,c.,,

r. r Finish nachined weld end preparations, and ground out deficien.cies wereA ' ~^'.-

..: ;;; ;...:..g. x. ;...

.a -

..~

l -

g,

/ 250 RMS. As measured with a Surf-Chek roughness standard conforming to.],#,(0;,

J

$D g

. 'r. ;. s. 3. a

.; ~. -

J ASA-B46, SAE-MIL STD-10.

W. drawing specification 498B932 states, "Finishh. r, LC

.-.u.......,;.....

a-

.. w

- o.

l machined weld end preparations shall have surface finished not in excess of;:.:. i.

.a.

. >.. n w -

m. y.<. y. ~... n,.. :. +.,

s.

s.

s..

...i 1.'~

. y 4 p,y.~;. $ j.j g.f 125 RMS."

g....,.

i...... y,y., ~.,..'...

,,.p.g.,

.. s.y 7 x-

^

-. ?.:*? ~ D :::..'..

p, ;.,. '&f., '..-:.: :g.

o s}

Identification was metal stamped on the pipe and fittings in conflict with : r ;

. ~... _. -

.. ~...

r E'

Specification C676343 paragraph 5.7.2 which states " Mechanical Tt$n' pin' is"" ~

s c0(* Q

...s..

s

.,. w..;

a.,. -. ~ ~.... ; ;.. z.- 2. y..,, 3...

.*<.. ~

('

prohibited." ASTM A376 paragraph 11.2 "No steel indentation stamping shall?

(

m

p..

r; g 3

2.

l l

be done without the purchascr's consent."S

- ' " ~ l ".- e).,f.l M d F ^_ j

~

\\

Wy c': W:f.WDeA Gt W.Rg :.5, +y ~. ~ :.

7.. e

-;~~ ;

..r;.

~

.. m:

. :,ys.;; ~ :..

. An.040 thickness penetrameter was found taped to the inside of spooldh*'y::g.%

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. E Soction II of the ASME Code for the purpose of fabrication and erection of l

,., - [ Atenic Powor Piping Systems by Stone & Webster Engineering Corporation.

~

O'. BASE METAL The base. metals covered by this' specification shall be in accordance

. vith' those listed herein, o

substhntial equivaont specifications. :.

. :d, ASTH-A-182 - Austenitic Stainless Stool Forgings, Grados F304; 2il:1-and F316

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ASTH-A-312 - Scamicas and Velded Austenitic Stainless Steel i_

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Pipe and Fittings, Grados 304 and 316

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Pipe and Tubing, Grades CF8 and CF8M, in i

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ASTH-A-451 - Contrifugally Cast Austonitic Steel Pipe for High Tenperature Service l

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