ML20237L332
Text
- ___ ________
?.
i
'T
- OsPANY Sheet I of 4 T.H E u t. E,vu.ll 0 8 6 l
C us e=ron,onatto j 'S y,
S.
.......... c. r i o.,
.. u..
,o..
FAClflC G15 & ELICTRIC CO.
S ec No. 78-OD-F7-0 TAW-4-60,,
i P
APPP.0'/8 FOR Da t e '-
S/7/71 CONSTRUCTION
--n, Rev. Date:
6 t t. l t.
EllGill! IRING DiPAP.T/A!!IT y ' q. t. ip ( %co,5y, em..d l
" ~ ',
EY[(?'/ lLIAll/([7 7/
/
- 6/30/72 I
TITI.E: SI' MUCIFICATION FOlt W El, DING OF Austecitic Stainless Steel l
l St Ol'E:
'I hin specification covers prepa ration, welding, weld finis h,'inspcetion d heat t re.4tment nf: Austeadt.ie Stainless Steel
~~~
,l an
[
15 Ab F M I l' A Li Agggg Soo' tion IX-76 Base Meterial QL[Elt M M'! A l. AW S AS.9 EE308 Ferrite Contre.' Per Customer Specification h
S t
- 11 A lt C F 1.L* S
- y o,,
INS!:lt1 MET A1. None l
Tt'NUSTE,$ El 1:CTf10D!:f Agg EWTE 2% T i
t 1d. L
- - n hc H
li i
91 1
- 0 t ur T O lt C il I N I. k T (. A S Sah c
i L
BACK:h Gas Purge per chart K-10BP to have oxygen oostens below
{
l 0.5% prior to welding.
I i
l'OS' TION. Welding shall be d<ino in the Fixed angular position (60)
I f R OC ESS,
Ihe a c iding: chall be d ine by the GT AW l
l i
i
.U. U. 1111 M N 'l The s iirrent uscIl shall be nhown on Sheet 4 3.
F. Min. Interpass Temp. 300 F. M a.x..
,1]ItElll: ATING AN D INT I'RPASS TEM P.
600 a
i l
4 j
L'US1 14 L A1.'l it M A1 M LN1 : N*#8 l
- Ar",on purre mt required on '/3" wall and above for fillet wald, m1v.
C C" N.""j'C"M l
3a 1 * '" d 2 PACIFIC GAS & ELECTRIC 00. Y SIMI:n thUl:.:Q3 0(il..%.'i.t1
~ " "
APPROVED FOR i
.acr r m CONSTRUCTION m e.. W.:. n.r7, d... N /
ENGINEERING DEPARTMENT
.. i.
- c. a..
1 owo l
I EY 'Y8 M DATE 7[/;//,;,j i ' d' N,,,..,,.,
o 8708200178 870014 PDR FOIA DEVINE84--743 PDR j
Ceioic
- 12. b. w
,o 1(LLOG O N P & M'T Sheet 2 of 4 T.H E.11. V :...... r t,.
e s, mom >c i t e s
, i, i a. a t.
... a t i a.
sittiauspent. ra it su t. -
Spec. No. Ja=OE.FT-ttf AW-4-60 g
Date-s/7/71 i
)
Rev. Dat e:
(,- u.7 g i
9 tf 8 8 Esmerica $4 6 ione.rc Pn s er #
The edges or vu'rtaces of the parts to be joined by welding lia s e M et a l i > r epa r at t, on,:
shall be prepa red by,fleine entting, plasma a rc, granding. machining or an) combin-
- 3.
Surfaces for
,ition of methods to form the geometry of the weld ohnQn on Sheet welding shall be i. lean angt f ree from paint,' stale, rust or other foreign r-sterials that a re detronental to quality welding. (Flame,edsting does met apply for s/s.)
A!I a. lag or flu remaintng on any hearl of weld tnetal or on adjacent base Clea ning:
metal shall be r.unoveirl before dernsiting the next sucecanive head.
l 1
Welettng T et hinque-Welding inchnique shall substantially be per, formed as shown on
, f . -,
j tiheet af 3.
i
- w s.
, ;. q)
'I
-l Unde rniele C.roove Pr,eparation:
8
.I wel'ds. ' requiring repairs shall.be remove,d b'y gr inding, a rc, l
Deserts: All defects 'a Un p p. r~c, conging 1r machining, itepairl weids hall'bc acco*mphshed to a l"
ri-qualifieel procedure aiid the method 'of examination shall be the sa pt ginal w ehl.
m '"'{'
Id in Yi sg a c hipi it or e.dlf *he Md' p r st$ h i go. d regulation over the U"""
g h
, :q u y o c ep -
egi ent uri th rk d.
or G'I AW a r. mnte foot i ar.t rol shall be used to g
rafe entire high f requenev, a rc starting, c'irrent etes.av, to clinunate c rate r indications.
init ia t e l
l y rd*:
P. i c o r Is s h a t.1 be k e pt o f w e ld e..
<>pr i a t <.r
- qua hit ea t ' o ne. dat e s, p roc e -
f t
i 8.. re qu a li fi s. tion, <!at e s, e vmbol., and all pe rt5nent information as to process and redo graphie in>< pe ction.
e Ag.gr_a nt e o f W. t ding 15e a d,:;
l'ac h ec bh.c herad s aall.,how c o m ple t e fusi.n te i
i
.i o ; a s i e t w e t.i do po,it a rul to ha c e rnetal. The fininihed surface of the weld s ha f t, l
"e r ee s moot hL. int o the component su rf ac e 1
. rg,e c u nn : inspection whall i onform to,ioplicable y,b code.
- ,igt r.nle Co n,th,t,igy \\ tl 'ou hydrogen clei t r. ides and flux i hall bc nept in a dry rod I
.ven si temp.. rat.i re s. r ecomm..nded 1,y a les e r.de manuf a ctu re r a t.. n o nimize mot s tu re l
a b* o ;>t ion.
(This paragraph does not apply for GTAW.)
l Weblinc Sequent e There shall b. a nunniene aint,'.nt ne int.:r rupt.uns cu ring u chi.
j 8
times the core The maximum width of a weld bead skall be three diameter of the filler wire.
Tha maximum thickness of any layer shall f
ns.
I to 1/S"/.
1 1
I
~ ~ ~ ~ ~ ~ ~
~
e e,,.. -
-?
'j Se 8,*r l{ g 1,
1;
,y p\\
I h r m.v. itLtoss com m t 33,,, 3 U, 4 eeseesseeen PuLLWA*. th(.0*Pon&TCO g
i l'
.. ' Pirinc rasait.Atsou 8
s' WILLIAWSPORT. PA. 17701 I,
, Spec. No. pg.cs-rtogrAW-4.so s
i 4
- ,1 Date
8/7/71 Rev.' Date: 6 h-h l
9 r.1 7 : Ru ev.u pf', fanre.rs e,6 er #
I j
}.
i
,. ~; >
T..
'+
WELDING,JECHNIQU ES s
,OROOV E,DETAI LS -
.r ;:.
s 1
s.
e'
.',#fi.
~
i.
t 4.g e, g.
e
'.i>e.
^
7 l
,,1 s
3
'W f
p 4,.:
- **'f.*g..
' ?*
O <,,
- y
. j.
v
-...,s.
,s
.y
+.,
,g.
<s.
i.
i
,1 e'
- s
'Aa
.g.,.
. [* /,..
'c '
33 f.,..
- I,,
4 4 '. d, 4"s $,k[h4 f.
r
?
tsi
_q s.
a f
f
. 9. *
~
(
2..
.,,ps f' b.
r
,3 (
, d, a'1 g l
I og,$
5
.. :.,. he
..t v,
..s a..g w a y
- h n,,-
g g.
4q'-
. (*" n ph< '
g f ey
.t
'y
s i
\\
I i
i I
I>e Falle r Fille r Torch Tu ng s te n Pao No.
k Metal Metal AMPS Volts Pola rity A Gas Siec A 4
Procese
,c;i r e Tvpe Flo-rat e Pola rity f
q 3/32"Dia.
LLL OT AN 3/32" ER= Boa 100-130 12-14 strai-tt 2Dn 1
1
= *. t.rk e I
i 1
I 1
r o
r.-,
N' Mw 4 ' a f A e A mr u
T it h-
/. H : c E n c i n c e r i
l i
i
- 4..
_ _ _ _ _. _ _ _ ____ _ _ J
t CODE 128 THE M. W. IGLLOGG COMPANY A DMelon of PULLMAN INCORPORATED o
WELDING PROCEDURE SPECIFICATION NO.
P8-08-F7-GTAW-4-6G DATE:
4-26-68 Rev. 8/9/72*
SHEET: 3A of 4!
~ GROOVE DETAILS - WELDING TECHNIQUE 3
t,.w.
1 t r.-.
t a
J-
~ t a...,
i l
I g h i
4--
t 2
-g; b,
q%
%E dc. l y
, $. I:. P g %d' g
's TYP.
i 1/16" Ap
_ g '%,* min = li t but be fcge(@ggpytmitely.) '._l,d{nk ;g V 4 5
not less than 1/8"
\\,. p'. s.'.
\\, %*
p, ro TU Fillets ray br.vc 2, 3 or mere passes to rreet tSc ntn. Id t requirement.
k ELD l t.G PASS FILLER WIRE POL.
SHIELDING GAS !
AliP ARC
~
PROCESS DIA.
TYPE At1D FLOW RATE VOLTS 1/16 ARGO!1 70-120 GTAU ALL 3/32 ER-308 STRAICHT M cry n'.'.1 ? O 1 -1L
/
t h
- v. u h, t :..c c L..n p in th :
, r. f 3,,i,
,w..
6 i :..- Fi. f i s.!.h.
- /1C
~ /- 1 Y
- ,*.: h d fill,t d. t.11 1 lie rc V ci g
net cn ess< nt ici vc.richic.
( ooe i25 i
filt E.W.lfLL.OGG CONestoiesese. l?
e Al e....e... s...iime e
\\'
PIPleG FAB #lCATICR REC 00lE DED F0llW Q.1 W h' lT Kii !!ER*.illECORD OF RELD
.QI \\ 1.11 11' \\ l'l0N 1 ESTS t /3 Niecirse..;
u... P e.. 0. 3.M. a@rM. ~. 4.40 8/7/71 i,,,,
weldi.s Prae ** NM.
W
- 3*
t u
e**.I sre sif,eeison.A.3. 1..W..
.. 431'.3f. 3 0. 4,,,".s.,' Mac'" a'..p
.. 3 0 4...,,,
p 8
W...- -..
,,, p.u,,,
1 hark.ees (if repe. Jee=esee.ad well,ise.ne..is
$*.,'X e $ 49
11.thac e. Reese shi* sees esalifies < t.
1/16*..thm. DSO" F allee Metal r,,uevi A.e. F....2...,..
F Ll'X 4 PM A TWOSPN F R E teld Metal Anal sie No. 4
.'f,..,_..
> les l en.f e h ome or t '.ar.s. is sin. M. _"" _,,.
i 1)esces he Fillee Mreal el aas.eaeladeJ i. let I. V fi.'
fr.< ei t.e > (,.shp.is ts un
,Ayman "8 QN*II J..
I 88 de \\**e
. Fl** R**e A9CIE.
f ue esiseret ene wel.fing.4sase if i dier Wesal in asi.
la Declins 4:40 eneJ' J g, _,,,,___
i at wi ce el.emenvei killed.
I'vekens Tempevatine Renee M iFl.nisc pai= w o n I <ecc... r.
pe,...e x..e ?aa v_
Maale ue Me8saple P.... Multtyle,,
P....h. e i Tee.
Name..
a
%a le es Muleirle A'8..%IS.
, (8.e s l'oo.rtion.v.f 4.simne.. 40
.u.A.,R,f.
e 6'
.,4 e, e.
... n
.m.,..et e. As e.is Q 2 Si Q 4. tw QN.2 as QPf.Il i r i.. n.
.. a. e.,os.a..
ece.
..d I f BM INI OH 61A I18 W f SNI.Y Fillee Were-Dies-se r 3/3C..... '.... *
- l'8 Diht. Tt t'HNIQl'FM
.i,.de s.~ Sluresenet :....
f aice n;-....n.
., a,e e<* 8_h*$$.g L*
8
.s
'rece os p u 6... A r s e s.S a a...
.l.
.el. __". s.e M
1 Y. 4.a_ _..
r e6..J a., u...d DRAP. -
4,l.,
t
<..e,..
Rflit.Cel) 51 ( T10411 Wl F.1kk Wed QM 61 i~
Q,,.q*f.$. D.. J. ' i b.1 4
.sc,. ;.,. so.
D'** *
- i" ' -
I
'T U ~
- Cais cs.r.e.e, of F.ll.e i
. Fadd. 3 3% {ee H.,
- 4 re s e, re e and f.eestsoe g3
(,1:106l> DF ND 11.h rsiliiss Q.? I o *.'. QN.7. 3. QN. *.2 QN. ?. D z-Type a 4 Figwee No.
g,,,,g,
l F@arwe No.j g,,,g,
and t
7..
. 4.
.e.
Jar shee U ef 4 a,
Reo.lse ed e diesweld Teett. Fig. Q 'We )
teldet's Nsee Es. IA N.
( lur k No 8)
. %ssap 6 o.
II.
the by iniwe et shese se ses enects telJee rerformen. e eegwee cnes T e s t Conj.cre J h. E a.I #I9F.
I a biw ei ury. Te s e No.
k.71-30 pe, Se s ettefy chee the assecocess in ehst rue,prd see i orie. ' anJ shes the tems welde erre peepared, welded sad se sseJ in 4.s vedse. e oirk she vegv.semenes a i n.ei s.
1% of eh. A *W E i..de.
v.,.s 7 he. L. J. _NA 11,oa a Cons say a.
i,.>
D ee.1/11/11...
H,
- 0._
. n e.. a...e..
.il....... e o f............ e.....
...,,c o........s,..he,cre d.
he..,,e...
s eiguieed by the ( oJr. M a t rimatended f.v e Q 4 is a o s ila' r to, s vrc h a s e et MM F lle adq u a rt ee t )
NOT I. Ane essessu al caraable s en F1 letepei e i tho t* alm r - e.1 he recurJcJ.
Pe ine e 1 i n l '
- 4. ( ' l - ta. )
D i e t
- m. e t
.'.e s a M r I a.i. *be U \\if 14 % 8 4'sh 'le.. nic, ) eet N i 100l*
4 s
N., i.,' {,
',p-
"...,.g.
,7 i,'. 's, }.'. o',.
N jgg,
M,-
c.. Sh. e e t 4 of 4 -
INE W,.W.KELLOS8 COMPAuf NEfMARICAL-TE$kiR N:A ll t'A T O R L
~
.,?
p e e.. s... nanse enseereusee FIPitt Fa8RICAftet, 3
ThEY
' F t 0 f t l U t t 0 0 0 U NI N T 4110 5, E k P's A1..' d e' '
~
l\\-
.- (
.u 1
i.,.
4 l
x.
scuir...n w., Ramnp-Z7-1N!LWa_4-80
'o..,__'.J/ AT1 t
f y im., e,.<..,..ff.aW _ _..
is i., m eh.
a x-S j
i 8
... p.g., _ $ _
. M.sedel tercificesiaM M R$4.._a A318W3$4gp.N.,
TMehmess (if F re. diameees ame well sMet.ees),,, _"
X et#9"*
.,,,f,,,,,_,_,,,,,,,,
Thacheese Rsage due Ort upsellr e 1118",,,_Qfy.n.510".,... '
as FHiee serial Gramp No,f.
f_ -
4..* *,
c y Weld Weel Austr$le. Nd. h 9
's
?..
.o
l
- ~-
s
,d
',C RE0utt0 SECTION TEN 5f t E TEST (r tes.o.e Amo on.4) j J
[
'A5 WELot0 V I C t.D Polat fthSitt 9 T e r m o v :4 it, g t e.is c 3,ggggggy, fE C,.
.nuaeae
{
u....,,..
w.. m....r......
. e.g. n i.
um
=cau
- e..n.
6.u.
u.c i ana
.vis than ist' -
__v.ienc==ame 11.300 85.840 46 S poke i n.ts p e meta 1 l
l Bo*S M T.Ef.1?S39.- 9.994 81.560 11.100,48',400 47.'44 Ereke is' base Abta
~
..G
~
,. i? if} !.*%' *L ', g' ;,. : *. '.
- 'l u ' O.! ',
, r, i,
K,;*
pt.. w.
,.statst attetvto
" "8''''''''" E*8'8 8
'O PL'el hb45' r[ ' n;<n'",um nR. :i1 yng.,..fe h' Mt an uang l
ntne.*
i t.,.; a
,: *a
_,h M
.% Q \\%,,,
V 5 7 tT 5W v-a 1,. -i.
' Ul0h 98.t.i. o's. 7. 7. de. 3.11
.o 6
i.a.
m v v r -
NO-F, %M1hbasM ' '
'*1 NGI statsmand
}
Ig R t
l 30-2 Beeft 180* ps.ssed CHARPY IMPACT BARS BROKEN AT i
74Pf aNC bCSULT TYPC A at f5 F ) c(, il ( h (t,
j F1GUS( NO, I
.l 6
I N
t t
i sL I
. a...
s.-,.m y.e.mp
_ u u.. s s....
, y,,.
u..,.;,,,,, a,,,........
.... u,,
a.... -,,,,...e Ye.t(o tuocd b k. E9.7% E...
I abor story-Teu %$ N.7.E *.*.@..
re e.....-.
We.eevil, ih.s the statemene s sa sha e,vi.nl sie ressees t end thes the t as weld e were per peesd. eelJed and
,,,,, a....,,;..,.. i n is,,,,,... -,... a <,, a... i s a in, 4 w c a,.
. u..,,e....l e,ga C on3EU.
Kl
.,a,/f he.N..W.
k
.er ee i
l l
l
I Tf.".M. W. KELLOCG COMPANY Paga 1
of q
A Division of Polinan incorporated Wcld Procedure (. ode No.
92/93 Piping Fabrication Spec No.
P I rh-S MAU-2 G-9 G Williamsport, Pa.
17701 Oste 4/4/67 Revision Dates 7/2/70,.3/16/70, Re:vned 6/27/73, Retyped 12/3/73 11/11/76
'/-7 7 7 ^
PROCEDURE SPECIFICATION FOR:
Carbon steel WELDING PROCESS : The welding shall be piping, SMAW (root and build-up), for socket done by the SHAW root and weld out process welds, fillet welds, and for the weldino-on of using manual equipment._ GTAW tack welding couplings.
Coupling must be drilled or cut shall be done using a nonconsumable elec-through before or af ter welding.
' trode of 27. Thorinted Tungsten, EWTH-2.
DASE HETAL: The base metal shalI conform BASE HETAL THICKNESS: This procedure is to the specifications for ASME,Section IX, qualified to allow welding of unlimited P-1 materials.
thickness on structural members under AWS Requirements. When welding to ASME Require '
l FILLER METAL: The filler netal shall con-ments, the allowable material thickness form to ASME F111er Metal Spect fications Num-for the 2G position is 1/16" to 0.56" and j
ber SFA-5.1 for ferrous filler metal in Group for the SG position 3/16" to 0.812" (as-Number F-4 welded); and 3/16" to 3.25" (heat treated).
The chem 1ca1 composition of the we1d depo-PREPARATION OF BASE MATERIAL: The edges sit shall fall within the limits of wcld or surfaces of the parts to be joined by m3tal Analysis Number A-1.
welding shall be prepared by flame cutting, plasma arc, grinding, machining, or any com-i GAS FOR TORCH SHIELD: Nominal composition bination of methods to essentially form the
}Iofargon,99.995%minimumpurity(forGTAV geometry of the veld shown on Page 2 as de-I process),
tailed on the attached sketches and shall be cleaned g i oil db excessive 3 g fia urasio j alle o
)(,,,
l GAS FOR B i
E: N f
k ( g g, [Q h h y p
y "t
- g h ELECTMCA BRA STICS
- The current 3
uu used shall be DC SHAW - Reverse Polarity i
TACK WELO F S L"f P: The GTAW process GTAW - Straight Polarity
' using filler metal type listed on Page 2 may i be used with or without back-up purge in 1/16 JOINT WELDING FROCEDURE: The welding
- 3/32 or 1/3" diameter. Test reports are technique, such as electrode sizes, and vol-Pages 5 t,. 6 tages and currents for each electrode, size of the welding tip and filler rods, shall be i
substantially as shown on Page 2.
POSITIONS: The welding may be done in all i
positions.
APPEARANCE OF WELDING LAYERS : The weld-ing current and manner of depositing the PREHEAT A.40 INTERPASS:
50 F minimum.
175 weld metal shall be such that there shall be F minimum for material that has a carbon con-practically no undercutting on the side tent in exces s of 0.303 and I" thickness.
walls of the welding groove or the adjoining base material. See job specifientions for POST HEAT TREATMENT:
1100-12000 F 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> specific undercutting limitations.
per inch minimum (see job specifications for cycle end thicknesses requiring post heat CLEANING: All slag or flux remaininc, on treatment).
any bend of welding shall be removed before laying down the next successive bead of welding.
DACKIMG STRIP: Nonc j
DEFECTS: Any cracks or blow holes that appear on the surface of any bead of velding TRAVEL SPLED: SMAW - 1" - 8" per min shall be removed by chipping. g r i nd in::, or j
gour,ing before depositing the next successive THIS PROCEDURE IS A REURITC OF AND C0hulNES:
j Code No.
T., PI-00-F4-SMAW-4-2C Code No. 93, Pl-04-rb-SM/W-7-5G
i
.9
,1avrEROFFICE MEMORANDUM L
- L f~ [.Q Diablo CanyonProject
%%g>
~
PACIFIC GAS AND ELECTRIC COMPANY 1
BECHTEL POWER CORPORATION Harold Karner To Pullman Power Products em January 24, 1983 s,em O. A. Rockwell
.: /
No No.
I
i.g?".n.!
i
.5 o,
General Construction I : sMet Weld Procedures for Rupture Restraints Diablo Canyon,,,,,,,
y g
- l. 3
- Reference Pullman Letter
~
- .... t.
,,. Dated January 14, 1983
........-..g,
.e Wald procedure specific.ation... code 7/8 ;ha's)een' ' approved.for 'the process.
cnd joint configurations,',itemizedson f.heyeld. proc.edure specification,h:.
-1 (WPS).c.
.These"itemizedjaramet.erstarey', considered prequalified':by AWS or;$
f,cra supported _byhtestsf.and. procedure qualification r Pullman wishes 3to-d, (PQR) <J'; If :y/ -
- not. itemized. a 'nek.use.WPS code 7./8[for processes.or ecor s ^t 3
".W5d/3..g :...-J 1:;dshT-
. Since ' 7.,.3.q'squa:.g.ggyp, yy g,pp p;
pr: qualified;by.AWS~fo... Gelds"sho'wniin:. our71. sizes _Yui..e. q;y3m' the'-
re.Vgr6cve t' tie.e-shown..ot nsidered.'...
n
.and are: not u.a._7.1:
rs SMAN21 id. H..
erral."s
. cupported '.b. y 't.. ests,..'.an..d.w"PQR. +'s.7the.w'sField, a.'a.re'.n.c. t..".a..llowed.'."
1".
4s.
.N..,cF.i
- a..
.m t
. e.:x.;m.
m n. n.n
.e:
.wyswrn. uer..i.w~-
4:
~... ?.a>. e v -
3 m
.^
7.c; %.
c L:. :p.':y* *,.
.?p.:p; a;. i.:.f.;,/9,... r.(lf. '#('.'* *,
.;, % o
.u:n. n.s..~. x g w.
- ~ * *
..... m..
.7
- s..
g
,,,,11
~
~ As'sistant Project Superintendent RTorstrom:fgm l
cc:
HBFriend JBHoch JRManning JWShryock.
~
RDEtzler 68 14 c.
~FOR INFORMATION N
p 5
DNLY L
_ dj
,j I
f'.***-
\\
. -.. a
{
l ' ' e -.*.".. h 'e 'S. ) ( 'i f,c I
gpm
_. _a l--
-J
-.m EJ Pullman Power Products Corporadon f
Discio Canyon Nuclear Protec het arrien hv 9a?
Avda Beacn, Cahfornia 93424
.Teleonone (805) 595 2356 January 14, 1983 I
.i l
Mr. Jerry Arnold
' gg 8NNSAfdT10N Paciffc Gas & Electric Co.
i P O Bux 117 l
Avila Beach, CA 93424 04t.y 1
Subject:
' Wald Procedures for Rupture Restraint Walds Attention:
R. Torstrom
/ '
Dear Sirs,
There have been multiple welds made in Unit #1 and #2 with the following configuration:
h%%
E i-m.=
s y i m.+.
5 L w u Me.%./
ush,uad A
A 4
n l
A-A l
The design drawing weld symbol was for a square groove weld.
- ll Approved welding procedure was used to install these welds but a Procedure Qualification Record was not prepared for this specific weld groove detail thickness. (Wald Procedure Specification Code 7/8)
The referencing code A.W.S. D1.0-69, page 54, Section 5, paragraph 502 (a) states:
"Except for the procedures exempted in Art. 501, joint welding procedures which are to be employed in executing contract work under this Code shall be previously qualified prior to use by tests as pre-scribed.in Appendix A Part I, of this Code to the satisfaction of the Building Commissioner. The Commissioner, at his discretion, may accept evidence of previous qualification of the joint welding procedures to be employed."
(Building Commissioner interpreted as PG&E)
~
~
1
-t Pullman Power Producto Mr. J. Arnold
\\
Pacific Gas & Electric Co.
January 14, 1983 l
PG&Ehasreviewedandacceptedourweldingproceduresfo$useon Rupture Restraints.
Is it mandatory that Pullman Power Products qualify a Procedure Qualification Record for this joint detail and every joint detail not considered a prequalified joint by A.W.S.?
Thank you for your prompt attention.
Harold W. Karner QA/QC Manager HWK/dd INORMATigy ONLY
't
_-__m_
.-________._____J
' y/. 8. C _1.'
PuHman~ Power Products Corporation Diablo Canyon N clear Project uait:
uantIAKT Ii, IW54 jy,y,,'c'n[ California 93424
^
T0:
J. ARNOLD, PG&E
- Y" FROM:
C. M. NEARY, QEG WELDING ENGINEER H. W. KARNER, FIELD QA/QC MANAGER l
l SUBJ:
INFORMATION REQUESTED BY NRC (WEEK OF 1/9/84)
The NRC has requested infomation concerning Pullman Power Products welding and welding procedures as used at Diablo Canyon. The subject matter and responses are as follows:
- 1)
SUBJECT:
CLARIFICATION OF THE RELATIONSHIP BETWEEN WELDING PROCEDURE SPECIFICATIONS (WPSs) AND WELDING TECHNIQUE SPECIFICATIONS
RESPONSE
Pullman Power Products' WPSs are accordance with ASME Section IX (qualified and documented in for example WPS 7/8). When these WPSs are to be used for welding within the scope of l
AWS 01.1, the WPS can be used in conjunction with the welding technique specification. The welding technique specification lists additional base materials permitted for use under AWS Dl.1 and also provides additional joint details for use under AWS' D1.1.
The preheat requirements of AWS Dl.1 are also contained within the welding technique specification. Welding Technique Specifications were used to control welding to repair the rupture restraints (contract specification 8833XR).
- 2)
SUBJECT:
EVALUATION OF THE EFFECT OF WELDING ON NOTCH TOUGHNESS OF HSLA RUPTURE RESTRAINT STEELS RESPONSE: A441, A572 (Gr 42 & 50) and A588 GrA steels were welded during the fabrication of the Rupture Restraints at Diablo Canyon.
An evaluation has been performed to determine the effect of welding on the notch toughness of these steels. The difficulty in welding a material without lowering the notch toughness of the material may be estimated by the carbon f
equivalent (CE). The higher the CE value, the more difficult 1
it is to successfully weld the material. The CE fomula is:
CE = %C & %Mn & %Ni
& %Chr & %Cu - %Mo - %V 4
20 10 40 50 5
1 The respective CEs based on worst case per spe: chemistry.
l ranges are:
i j._. _ _
l C__
J
mg Pullman Power Products P
Corporodon J. ARNOLD f
'Page 2 11-84
[
CE588
=.59 CE572-42 =.55 CE441
=.54 CE572-50
=.57 Clearly, A 588 is the most difficult material to weld.
Test welding of A588 was performed (see attached RQR 467).
Even with low preheat temperatures (50*F) and high heat inputs (62XJ/in) the notch roughness of the HAZ was significantly improved with respect to the base metal.
- 3)
SUBJECT:
USE OF COPPER BACXUP BARS FOR BOLT HOLE RESTORATION I
RESPONSE: Copper backup bars are a common technique for making weld joints where a removable backing is desired.
The AWS Welding Handbook makes reference to copper backing bars (see attached).
These backup bars were used only for bolt hole restoration.
In all cases, the backside of the weld was visually examined to assure there was no melting of the backup bar.
The backside of the weld also received an MT examination.
I
- 4)
SUBJECT:
EXPLANATION OF USE OF FLARE BEVEL JOINTS WITH CLOSE FITUP (N0 ROOT OPENING) AND WITH 3/16" MAXIMUM ROOT OPENING FOR RUPTURE RESTRAINT WELDING RESPONSE: Flare bevel joints with no root opening may be considered as prequalified as the joint configuration is equivalent to prequalified joint configuration BTC-P4 from AWS D1.1, 1981.
i Flare bevel joints with root openings less than or equal to 3/16" may be considered as welding with backing as the l
initial SMAW deposit is used only to provide backing for l
subsequent weld passes. This initial weld pass is not
)
considered when calculating the effective throat of the weld.
- 5)
SUBJECT:
CORRECTIVF ACTION FOR UNSCHEDULED AUDIT #32, AAR #5, FINDING #1 (UNQUALIFIED WELDING OF SQUARE GROOVE JOINTS).
RESPONSE: See attached for the closed AAR and correspondence between Pullman Power Products and PG&E. This correspondence and DR 4899 resulted in the qualification of Pullman Power i
Products' PQRs, numbers PQ R - AWS 13 to 20, which are also attached.
- 6)
SUBJECT:
CORRECTIVE ACTION FOR UNSCHEDULED AUDIT #35, AAR #1, FINDING #3 (UNQUALIFIED WELDING 0F A515 MATERIAL..)
RESPONSE
See the attached AAR.
Corrective action for this findin resulted in the qualification of Pullman Power Products'g PQRs, numbers PQR-AWS 9 to 12, which are also attached.
~'
--__--___-~----___A
q Pullman Power Products -
.g 4
lP 'Page 3 11-84 Corporstlin J.* ARNOLD
)
1 l
l 1
l I
I
/// /s -
2 C
M.' Near j
QEC Weldi gineer j
i
/
H. W. Kather Field QA/QC Manager CMN:WHK: sam j
cc: File C.M. Neary E.F. Gerwin A.A. Eck f+NRC i
~~
~~
-