ML20127L054
| ML20127L054 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 01/24/1967 |
| From: | Case E US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Okrent D Advisory Committee on Reactor Safeguards |
| References | |
| NUDOCS 9211230404 | |
| Download: ML20127L054 (18) | |
Text
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0l January 24, 1967 j
Dockat No.
50 263 Dr. David Okreat Chairman, Advisory Comunittee on Reacter Safeguards U. S. Atomic Emergy Commission Washington, D. C.
Dear Dr. Okreact T'Vi" of the Committee are geitted herewith for the copies of the following NORMP2tN STATES POWER CCNPANY Intter dated January 19, 1967 transmitting heendment No. 5 to the ecastruction permit applicatice for the Menticello Nuclear Generating Plant.
'Ihis amendment submits a study and evaluatics of cperating experience with field assembled p n ssure vessels as nquested in Dr. Herris' letter cf December 27, 1966.
l Si rely yours, l
Edson G. Cab, Assistaat Director Division of Emactor Licensing Enelosures:
As etated above beet E. G. Case N. D. Masen Suppl. M N RSE, Reeding R&PRSE:DRL roya : m ensmauamr >
1/24 /67 m eam A m o ens taar. M a m_
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9211230404 670124-PDR ADOCK 05000263 0
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APPDmiX A E@A31.SOII_ _OF,.j_tAlUFACTU,RijiG PROCL11L{R_LS flP SEOP FAu3ICATIpiAjiq F_OR, FILJp _F_ABRICATIO.(
OF R_EAq0R VESSl(L_S OF _B_0_ILING UAT_L1 RGCTORS I
COhBUSTION ENGINEERI!4G, INC.
BABCOCK & WILCOX CO.
CliICAGO BRIDGE & ERod CO.
(100% Shop Fabrication) _
(1_00% Shop Fabrication) _ __ M o2 Plus Fic;d Fabrication)
P_ LATE ftATERIAL Composition SA-533, Grade B, Class I, SA-533, Crade B, Class SA-533, Grade U, Class 1, per ASME Code Case 1339-2.
1, per ASME Code Case per ASME Code Case 1339-2.
(SA-302B with 0.4/0.7 nickel).
A-with u.UO.7 nickel).
1339-2 (SA-3023 with 0.4/0.7 nickel).
E**
P*#~
mitting 50 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-5 months <br /> of stress relief at 1150*F without loss of mechanical proper-ties.
!!ill IIcat As-rolled and stress re-As-rolled and stress re-
. Quenched and tempered.
Treatment lieved at 1150*F for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> lieved at 1150*F for 1 per inch of thickness.
hour per inch of thick-ness.
j
?till Ultrasonic Longitudinal wave along Longitudinal unve along
' Longitudinal wave along Inspection 9-inch grid, per Code 9-inch grid, per Code 9-inch grid, per Code Case 1338-3.
Case 1338-3.
Case 1338-3.
Fabricator Ultra-Longitudinal wave, 1001 Longitudinal wave, 1001 Performed at the mill.
nonic Inspection coverage, per General coverage, per General Longitudinal wave, 100%
Electric spec. (Above Code..
Electric spec. (Above coverage, per General procedure).
Code procedure).
Electric spec. and per plus p_lus Chicago Bridge & Iron i
Shear wave, 100% coverage,
' Shear wave, 100% cover-spec. (Above Code from two directions. (Above age. (Above Code
' procedure).
Ade, procedure).
procedure).
L.
COMBUSTION ENGINEERING, INC.
BABCOCK & UILCOX CD.
C111CAGO BRIDCh & IRON CD.
(100% Shop Fabrication)
_(100% Shop Fabrication)
(Shop Plus Field Fabrication)
PLATE ltATERIAL contd.
I Fabricator Magne-Rolled edges of pintes are g
tic Particle inspected.
(Above Code l
i Inspection procedure).
Giote: Plate edges are prepared by grinding).
Pepair Welding Repairs are nade and in-Repairs are made and spected, per C de require-inspected by Babcock (Note:- Repair of.
ment, at the mill under
& Wilcox per Code plates by weld-surveillance of Combustion requirements. For ing is' defined Engincering personnel.
Dresden 2, 20% of the g
by Code Para-neral pt. ate quality plates required repair. j graph N-321.2.
fluctuatea.-
For Dresden 3, 50% re-
+
!!agnetic particle 9uire repair. !!ost or liquid'pene-repairs are on plate trant inspection top edge.
is required on area. prepared e
l for repair.
l Radiographic j
l examination i
plus magnetic I
particle or, liquid pene-trant inspection i
is; required following repair).
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COMBUSTION ENGINEERING, INC.
BABCOCK & WILCOX CO.
CHICACO BRIDCC & IRON CO.
(100% Shop Fabrication)
_,_ _(100% Shop Fabrication)_
(Shop Plus Field Fabrication)
FORMING FABRICATION
+
I t
I Shaping Shell Ring (1) Plate heated to hot work-At Mt. Vernon, Indiana, At Birmingham, Alabama, j
i Segments ing temp.,
Shop:
Shop:
(2)' Hot formed on press.
(1) Plate heated to hot (1) Plate heated to 400*F.
(3). Cold sized on press.
forming temp.
(2) Cold formed on press (4) Quench hardened from (2) Hot formed on hori-to outer fiber maximum i
1600*F.
zontal " pinch" rolls.
total enongation of I
(5) Tempeted at 1225/1250*F.
(3) Cold formed to 3%.
i (6) Cold sized on press, if final shape on (3) Stress relieved at 1150*F 1
necessary.
horizontal " pinch" for 1 /2 hours.
rolls.
(Notes: No forming below 100*F.
Only one forming cycle will be required).
4 Shaping Head (1) Plate heated to 1700*F.
At Barberton, Ohio, Shop:
At Birmingham, Alabama, I
Segments (2) Hot formed on press.
(1) Plate heated to hot Shop:
(3) Cold sized on press.
forming temp.
(1) Plate heated to 400*F.
(4) Quench hardened.
(2) Hot formed on press.
(2) Cold fermed on press l
(5) Tempered.
(3) Cold sized on press?
to outer fiber maxi-i j
(6) Cold sized on press if (4) Quench hardened.
mun total elongation j
necessary.
(5) Tempered.
Of 3%-
(6) Cold sized on press if (3) Stress relieved at 1
1150*F for 1 /2 hours.
l necessary.
(4) Steps (2) and (3) re-pented until desired shape is attained.
i '
(Notes: No forming below I
100*F.
Bottom dollar segmentwill require two forming cycles).
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t COIDUSTION ENGINEERING, INC.
BABCOCK & WILCOX CO.
CillCAGO BRIDGE & IRtd CO.
l (100% Shop Fabrication)
(100% Shm Fabrication)_(Shop Plus Field Fabrication)
?
i FBIGLING FABRICATION contd.
i f
1 Nondestructive Ultrasonic inspection, longi-At both Barberton and At Birmingham. Alabama, Shop:
(
Inspection of tudinal wave.100% coverage, Mt. Vernon, ultra-Ultrasonic inspection, longi-
[
Formed Segments
-per General Electric sp c.
sede inspection, tudinal wave,100% coverage,
[
l (Above Code procedure).
longitudinal wave, per General Electric spec.
i 100% coverage, per and per Chicago Bridge &
General Electric spec.
Iron spec. (Above Code
[
( Above Cod _e procedure).
procedure).
l plus Il Magnetic particle inspection, 100% coverage of both in-
[
ternal and external surface.
J' (Above Code procedure).
l 1
i Sizing Shell.
If out of shape, can only At Mt. Ve rnon, Indiana, At Birniugham, Alabama, Shop:
f Rings stress relieve in furnace Shop:
Out-of-roundness of shell (Welded from for sag to correct contour.
Circumferential growth sections will be corrected f
Segments)
No rolls are available for of 2 inches to 5 inches ' by roll-type forming equip-sizing.
was found for shell ment.
rings of Dresden 2 size l.
after quenching and l
tempering following electroslag welding of
+
longitudinal scans.
Unpredictable shrink-age occurred during subsequentostress relief. Second quench j.
hardening cycle did not remedy situation. Was necessary to cut open I
4 each of the four Dresden i
1
l i COMBUSTION ENGINEERING, IUC.
3ABCOCK & UILCOX CO.
CHICAGO BRIDGL & 1RON CO.
i (100% Shop Fabrication)
(100% Shop Fabrication 1 (Shop Plus Field Fabrication) a h
FURMING FABRICATION
. contd..
f
' zing Shell 2 shell rings, resize, l
ainga l
and reweld by automatic j
(Welded from submerged arc.
j Segments) contd.
i i
I WELDING FABRICATION l
1 Shell Ring Longitudinal seams are welded At Mt. Vernon, Indinna,
. At Birmingham, Alabams, Shop:
j' Assembly by. automatic submerged arc, Shop:
(1) Shell ring will be assem-i-
joining either two or three Longitudinal seams are bled by tack welding to-shell ring segments.
welded by electroslag gether two formed seg-welding process, joining ments at longitudinal appropriate number of hot seams by manual shielded
[
formed shell ring seg-metal arc (i.e., hand I
ments. Welded shell stick, low hydrogen, j,
ring assembly is next
. electrodes).
4 quench hardened and (2) Shell ring will be clad f
tempered.
and then stress relieved.
~
(3) Nozzles will be welded in and then stress re-lieved.
(4) Girth veld edge pre-parations will be made.
(5) Assembled shell ring will be flame cut at tack f
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I CO?fdUSTIO:I ENGINEERI!iG, INC.
BAUCOCK & UILCOX CO.
CHICAGO SRIDGE & IRO:3 CO.
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(100% Shop Fa_brication) _ _ __
_(100% Shop _Fabri,ca_ tion)
(Shop Plus Field Fabrication) g i
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WELDING FABRICATION _' l i
. coned.
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j.
Shell Ring welds, and mating segments j
Assembly uill be fit up and match-l marked.
contd.
3 i
At Monticello, !!innesota,
[
Site:
{
g in site shop, mating seg-ment e will be joined at
[
longitudinal seams by l
I l
manual shicided metal arc.
1 Nozzle Velding
[
(mainly). They are velded fron Shop:
Shop:
i
. one side against backing strip Barrel type (" set-on")
All nozzles will be in-by. automatic submerged arc.
nozzles (mainly). They stalled at Dirmingham shop, I
- Nozzles are welded into weld-are welded by automatic except one 2-inch drain c
{
- 'ed assembled shell rings submerged arc.
Mozzles nozzle of lower head.
i
- prior to versel assenbly.
are welded into welded I.arge nozzles will be in-i-
t assembled shell rings sert forged type, allow-i prior to vessel asserb ly.
ing butt welds. Smaller nozzles will be forged f
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barrel type. All weld-t i
ing will be manual shield-ed metal arc.
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COMBUSTION ENGINEERING,1NC.
DABCOCK & UILCOX CO.
CIIICAGO BRIDGE & 1RON CO.
(100% Shop Fabrication)
_100% Shop Fabrication)
(Shop Plus Field Fabrication)
(
i l
WELDING FABRICATION l
contd.
l At Birmingham, Alabama _,
i Shop:
l Bottom IIcad Bottom head knuckle segments At Mt. Vernon, Indiana, By manual shielded metal Assembly are joined and bottom head Shop:
arc, bottom head knuckle
{
dollar segments are joined, Same welding process segments vill be joined, l
by automatic submerged arc.
and sequence as by bottom head dollar seg-l Stub-skirt, knuckle assembly, Combustion Engineering.
ments will be joined, i
and dollar assembly are and then stub skirt willbe i
joined together circumfer-attached to bottom head entially, by automatic sub-knuckle.
f merged arc.
At Monticello, Minnesota,
[
Site:
l In site shop, by manual j
shielded metal arc, knuckle-l l
skirt assembly will be I
joined to dollar plate
(
j assembly, by girth wcld.
Vessel Assembly Girth seams are welded by At Mt. Vernon, Indiana, At Monticello, Minnesota, f
1 automatic submerged arc, Shop:
Site:
[
i.
Joining bottom head assembly, Same welding process and In site shop, by manual i
shell rings, and shell flange, sequence as by Combustion shielded metal arc, shell in conveniant sequence.
Engineering.
flange will be girth weld-I f
ed to top shell ring.
At Monticello, Minnesota, l
Site:
I Vessel will be field assem-bled by girth seams welded l
l by manual shicided metal
[
arc, joining bottom head assembly, three shell rings, I
i and shell flange-top shell ring assembly.
4 E
. COM3USTION E!;CINEER1!iC, INC, BARCOCK & UILCOX CO.
CilICMX) BRIDGE & ICON CO.
(100% Shop Fabrication)
(100% Shop Fab rica t ion)__ _
(Shop Plus Field Fabrication) l f
WELDI!IC FABRICATION _
contd.
Vessel llead Top head knuckle segments are A_t Mt. Vernon, Indiana At Dirningham, Alabama, Shop:
Assembly.
joined and top head dollar Shop:
By manual shield metal are:
segments are joined, by auto-Same welding process and (1), top head knuckle matic submerged arc. Knuckle sequence as by Combustion segments will be joined assembly and dollar assembly Engineering.
and top head dollar seg-are joined circumferential1y ments will be joined; and then attached circumfer-and (2), knuckle assembly entially to head flange, all by will be girth welded to automatic submerged arc.
dollar assembly.
At Monticello Site:
In site shop, knuckle-dollar assembly will be joined circumferential1y to head flange, by manual shielded metal arc.
Cladding Shell' rings and head assemblies Shell rings and head Shell rings and head are clad by automatic weld deposit assemblies are clad by assemblies will be clad automatic weld deposit at Birmingham Shop by process.
process. Surfaces to be automatic weld deposit clad are prepared by process. Surfaces to be sand blasting..
clad are prepared by sand blasting.
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1 CO!mUSTION E'IGINEERING, INC.
BABCOCK & WILCOK C9.
CllICACO CRIDGE & IRON CO.
(100% Shop Fabrication)
(10_0% Shop Fabrication)
(Shop Plus Field Fabrication)
[
l l
UELDING EABRICATION
~
i contd.
L i
Weld Joint All major weld joints, includ-At Barberton Ohio, Weld joint preparation will i
j Preparation ing nozzle joints, are machined Shop _:
be same for both shop and to specific joint design (Above Nozzle weld joints field welding, i.e., shell
[
l Code procedure). Shell ring are premachined joints, head joints, and longitudinal and girth joints with locating lip on nozzle joint will be shaped I
are machined to double U both nozzle and shell, by flame scarfing plus 4
grooves.
(Above Code pro-grinding. Shell ring longi-
[
l cedure).
tudinal and girth joints will g
be double beveled, having l
At Mt. Vernon Shop:
square bar as spacer and i
End faces of shell temporary back up bar for i
rings are machined in welding. Work at site will I
preparation for the be done in site shop.
t assembling girth 4
velds. (Above Code a
procedure). Plate j.
edge preparation of shell segnents for assembling l
longitudinal velds is not routinely performed by j
machining.
j i
Out-of-Round--
Combustion Engineering personnel Rabcock & Wilcox per-Chicago Bridge & Iron per-ness Tolerance feel they can meet out-of-round-sonnel feel they will sonnel have stated that l
l (Note: !!aximum ness. tolerance.
be just able to meet shell rings rust pass tem-out-of-round-Code allowables for plate dimensional require-ness tolerance eccentricity and ments before velding fabri-for shcIl rings circularity.
cation step.
i and heads is i
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L COMBUSTION C;GINEERING, INC.
BABCOCK & WILCOX CO.
C111CAGO BRIDGE & IRON CO.
(1007, Shop Fabrication)
(100: Shop Fabrication)
(Shop Plus Field Fabriention)
WELDING FABRICATION contd.
1 i
i mit-of-Roundness l
j, lerance contd.
smaller of D + 50 2-200 and D_, where D is i
100 t
nominal inside dia-l
,.l' meter in inches).
A lignment Tolerance Combustion Engineering personnel Babcock & Wilcox personnel Chicago Bridge 6 Iron per-E O'o te :
Alignment feel they will be able to con-feel they will be just sonnel have stated align-tolera ce of form to Ccdc Case 1365 tolerances, able to meet present Code cent tolerance prior to sections to be They initiated the Code Case.
allowables for offset.
welding will be in conform-welded has been They feel they could not have They feel they could not ance with Code case 1365.
increased for.6-met the Code tolerances prior have met the Code toler-inch thickness, to Code Case 1365. Offsets ances prior to Code Case j
by Code Case are blended to a 4:1 taper.
1365.
i 1365, from 1/8-inch ra 3/8-inch, i
for longitudinal joints, and from
'l/4-inch to 3/4-inch, for circum-l ferential joints.
j' Code Case 1365 may also be interpre-ted to allow even larger offsets, provided that f
=
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COMBUSTION ENGINEERING,1NC.
BAUCOCK & WILCOX CO.
C11ICAGO BRIDGE & 1RON CO.
(100% Shop Fabrication)
(100% Shop Fabrication)
(Shop Plus Field Fabrication) i I
WELDING FABRICATION
[
i 1
contd.
Alignment Toleranec contd.
l stresses meet Code Paragraph N-414' requirenents).
1 j.
i Shell Ring In order to meet Code fit-up Machining to final dimen-None will be performed, i
!!achining and out-of-roundness. require-sions of shell sections ments, shell rings that are is not routinely per-i I
to contain nozzles and have formed.
j certain sizr -thickness ratio j
are machined inside, or inside t
and outside, prior to shell ring cladding and install-ation of nozzles (Above Code procedure). (1/2-inch excess' l
stock allowed on each side for f
removal. Nozzle welding gives l
i distortion so that, without prior machining, shell ring dimensional tolerance could be out of Code during vessel 4
assembly girth welding).
[
s Welding Preheat-All welds are maintained at All automatic subnerged All welds will be main-ing 300-400*F preheat until arc welds are maintained tained at 300-400*F pre-
[
they are thermally stress at preheat until they heat until they are relieved. Sane for weld are stress relieved.
thermally stress relieved.
overlay cladding except Same for weld overlay l
l preheat-can be 200*F ninimum.
cladding, except preheat i
can be 200*F minimum.
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' I C0!1BUSTION E' CINEERING,1NC.
BABCOCK & WILCOX CO.
CIIICACO BRIDCC & IRON CO.
(Stog Plus Field Fabrication)
_(100% Shop Fab ricat ion)
(100% Shop Fabricat ion) j WELDING FABRICATION contd.
I Post Weld IIcat All welds and weld overlay cladding Per General Electric All velds and weld overley Treatment are given intermediate stress re-requirements, this is cladding will be given lief heat treatments of 15 similar to Combustion intermediate stress re-minutes at 1100-1175'F. After Engineering practice.
lief heat treatments of joining all sections, entire On Dresden 2 vessel, 15 minutes minime= at vessel is stress relieved in only local stress re-1100-1175*F, Lindding furnace at 1150 + 25'F.for 1 lief will be given the time will be 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> hour per inch of thickness. In assembly seam.
and base metal time will 1
future, last joining girth weld be 1 to 1 /2 hours, will receive only local stress usually. Final stress relief by furnace built around relief time will be 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> it.
per inch of thickness.
Intermediate stress reliefs will be in shop furnace, at Birmingham or at 3
Fknticello site.
Girth weld stress relief during i
field assembly will be by temporary furnace built around it.
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L COM3USTION 131GINEERING.I"C.
11ABCOCK & WILCOX CO CIIII*ACO BRIDGE f, IRON CO.
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(100% Shop Fabrication)
(100% Shop Fabrication)
(Shop Plus Field Fabrication)
MACHINING EABRICATION l
t 4,
All machining operations are At Barberton, Ohio At Creenville, Pennsylvania, conducted readily at Chattanooga, Shop:
Shop:
Tennessee, pressure vessel shop.
Nozzles are machined.
(1) Lower head dollar plate Control rod drive sleeve pene-assembly will be pre-trations are put in lower head At Mt. Vernon, drilled to accomodate dollar assenbly by horizontal Indiana, Shop:
control tod drive mill.
All other machining sleeves.
i steps are perforced.
(2)
Internal chroud support L
Control rod drive skirt will be fabricat-sleeve penetrations ed.
are put in lower head dollar assem-At Monticello, Minnesota, bly by horizontal mill.
Site:
New automatic " machining (1) Lower head dollar plate j
center" will soon be in holes will be finish operation.
drillec' using vertical machining rig.
3 (2) Vessel flange and head flange will be milled to mating surfaces.
l (3) Vessel flange and head i
l flange will be drilled I
for bolting.
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COMBUSTION ENGINEERING,1NC.
BABCOCK & WILCOX CO.
CIIICACO BRIDGE & IRON CO.
_ 100% Shop Fabrica_ tion)
(Shop Plus Field Fabrication)
(
(100% Shop Fabrication) t D!SPECTION DURING WELDING FABRICATION Radiographic All welds are radiographed per All welds are radiograph-All welds will be radio-I" Code requirements, using ed per Code requirements, graphed per Code require-following equipment:
using following equip-ments. Radiography will (1) 1 Mev (1 million volt) ment available at Mt.
be doce at facility where j
x-ray.
Vernon:
weld is made. At Birming-6 (2) Cobalt 60 (100 curie).
(1) Cobalt 60.
ham, following equipment
(
(3) 2. Mev x-ray.
(2) 12 Mev Linear is available:
l (4) 15 Mev Betatron.
Accelerator.
(1) Cobalt 60 (120 Curie).
I (5) 25 Mev Betatron.
Dresden shell ring (2) 2 Mev x-ra -
(6) 13 Mev Linear Accelerator.
longitudinal welds (3) 25 Mev Betatron f
Cobalt 60 is not used on Cen-were inspected by At Birmingham, all nozzle eral Electric vessels. Linear Cobalt 60 because welds (and possibly all Accelerator or. Betatron is 12 Mev Linear other major velds) will be used on all longitudinal Accelerator was radiographed by Betatron.
and girth welds, giving not in operation (No above-Code sensitivity above-Code sensitivity (1/2 to at that time claimed by CB&l). At c
1%). (Above' Code. procedure).
due to initial in-Monticello site, all welds L
stallation and will be radiographed by calibration efforts.
Cobalt Co.
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t C0tDUSTION ENGINEERING,1NC.
BALCCOR & WILCOX CO.
C11ICAGO BRIDGE & IRON CO.
(100% Shop Fab rication)
(100Z Shop Fabrication)_
(Shop Plus Field Fabrication)
INSPECTION DURING WELDING FABRICATION contd.
Ultrasonic Examinat-Per Code requirements, all welds Per Code requirements, Per Code requirements, all l
n of barrel. type nozzles are shear all welds of barrel type welds of barrel type I
wave inspected, 100% coverage.
nozzles are shear uave nozzles will be shear l
inspected, 100% coverage.
wave inspected, 100 coverage.
r
' Longitudinal and girth weJds Per Code Case require-Per CB&I practice for in-are not inspected.
ment, electroslag welds progressweld quality are shear wave inspected, control, all welds prior 100% coverage.
to stress relief, at Birmingham and Monticello, will be shear wave in-spected from three direct-i ions,100% coverage, while at preheat temperature.
(Above Code procedure).
?
Per CB&L practice, all I
welds, at both Birmingham and Menticello, will bc l
shear wave inspected f rom three directions, 100%
coverage, after stress relief and cooling of vessel to ambient temperature.
(Above Code procedure).
1 i
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. COMBUSTION ENGINEERING,INC.
BABCOCK & WILCOX CO.
CIIICf.GO BRIDGE & IROJ CO.
(100% Shop Fabrication)
(100% Shop Fabrication)
(Shop Plus Field Fabrication)
INSPECTION DURING WELDING FABRICATION contd.
.trasonic Examination Per General Electric require-Per General Electric re-Per Cencral Electric re-contd.
ment, weld overlay cladding quirement, weld overlay quirement, weld overlay for bonding using 9-inch grid.
cladding is inspected for cladding will be in-(Above Code procedure).
bonding using 9-inch grid.
spected for bonding using (Above Code procedure).
9-inch grid (Above Code procedure).
?!agnetic Particle Machined weld preparations All weld preparations All weld preparations ExQmination are inspected. (Above Code are inspected. (Above will be inspected at procedure).
Code procedure).
Birmingham and at Monticello. (Above Code procedure).
Longitudinal and girth welds Welds are inspected Per General Electric are inspected after the root after removal of back-up requirement, at Birming-pass, periodically during straps;.and weld seams ham and at Monticello, welding, and after welding are inspected after head and shell compon-completion plus stress re-stress relief. (Above ent welds will be in-lief.
(Above Code procedure).
Code procedure).
spected after the root pass, periodically during welding, and after welding.
~
(Above Code procedure).
I
I
. CO:CUST10M E.:CINEEP.II:G, IUC.
itABCOCK & UILtmX CO, CHICACO DRIDGE & IRO:4 CO.
(1,00% Shop Fabricatien)_ _ _ _ _._,,(100% Sbop Fab rication)
_(Shop Plus Field Fabrication) i 1;.SFECTIO:1 DURII!C lELDiNG FABRICATION contd.
t
?
Liquid Penetrant Per Cencral Electric requirement, Per General Electric re-Per Cencral Electric re-t Examination all cladding surfaces are inspected.
quirement, all cladding qui rernent, all cledding (Above Code procedure) surfaces are inspected.
surfc es are inspected.
procedure).
(Above s..>de procedure).
(A v All head sealing surfaces are e
a ng su ace e:
a g surna +
inspected after finni machining is Prepared by grinding).
will be cleaned by (Above Code Procedure).
wire brushing).
I !SPECTION OF COMP-
_L:.TED VESSEL L
ilefore flydro-100%'of vessel outer surface static Test (including all welds and weld repairs) is Magnafluxed (i.e.,
tugnetic particle ex:imined).
(Above Code procedurd.
Per Code requirement, all After Ilydro-Per Code-requirement, all Per Code requirercent, all veld surfaces, including static Test veld surfaces, including weld surfcces, including
- P *' # "* " ' "
repair welds, are itagno-repair welds, are magnetic magnetic particle in-fluxed.
particle inspected.
spected.
l t
t i
-