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7/21/2019 8a Codes and Q & C
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Codes
&
Standards
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Lesson Objectives
When you finish this lesson you willunderstand:• Codes and Standards and Standards
Writing Bodies• Welding Procedure Development and
Qualifications
Learning Activities
1 !ead "and#oo$
%1&'%(%& )iew Slides*
+ !ead ,otes-
% .isten to lecture
/ Do on'line
wor$#oo$ ( Do homewor$
Keywords
Codes- Specifications- !ecommended Practices- 0uides-Classifications- ethods- 2,S3- 3S4- Welding Procedure
Specification 5WPS6- Procedure Qualification !ecord 5PQ!6-
Welder Performance Qualification
Codes and Standards
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Standards that Impact Fabrication
Types of Standards
Codes are generally applicable to processes
and indicate the mandatory use of materials or
actions
Specifications are generally associated witha product and indicate the mandatory use of
materials or actions
Recommended practices and guides are
offered primarily as aids to the user Classifications and methods provide lists of
established practices or categories for
processes or products
Introduction
0.1.1.6.0.T1.95.12
Shallwill
Shallwill
Shouldmay
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!his !able
is in the
"elding
#andboo$
Code "riting Agencies
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Standards that Impact Fabrication
What is Covered by Standards
Products
Piping !merican Petroleum "nstitute
#iller metals !merican $elding %ociety
%hips !merican &ureau of %hipping
Pressure vessels and boilers !merican %ociety of
'echanical (ngineers
&ridges !merican "nstitute of %teel )onstruction
*ealth + %afety Terminology
Testing Procedures
Introduction
0.1.1.6.0.T2.95.12
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Standards that Impact Fabrication
American National Standards Institute (ANSI) )oordinating organi,ation for the -.%. voluntary
standards system
There are approimately 10/000 !merican ational
%tandards/ which encompass nearly every field and
discipline !%" standards are developed and used voluntarily they
become mandatory when adopted or referenced by a
governmental body
Introduction
0.1.1.6.0.T.95.12
International Organiation for Standardiation (ISO)
3 (stablishment of -niform %tandards for "nternational Trade
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Standards that Impact Fabrication
International Organiation for Standards (ISO)
40 countries/ 000 standards/ !%" is the -.%.
representative
"%7 9000900 8!%"!%:) :90; is a series of <uality
management and assurance standards in manufacturing =esigned for manufacturing sector
() has adopted "%7 9000 and prefers -% suppliers
that are "%7 9000 certified
=o=/ =uPont/ '/ !T+T are as>ing suppliers to comply
with "%7 9000
"%7 4 #actors to be )onsidered $hen !ssessing
#irms -sing $elding as a Prime 'eans of #abrication
%roessional Society Standards
0.1.1.6.2.T20.95.12
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Standards that Impact Fabrication
!ealth " Safety
!%"!%) ?9.11944 %afety in $elding and )utting
"ncluded in the #eneral Industry Standards of 7%*!
%pecifically covers arc/ oyfuel gas/ resistance welding
*ealth and %afety in $elding and !llied Processes thedition/ ed. .). &alchin and *. @. )astner/
'cAraw*ill "nc. 199
#ealth and Saety
0.1.1.6.1.T.95.12
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Standards that Impact Fabrication
American Welding Society (AWS) Standards
=efinitions and %ymbols 8!;
#iller 'etals 8!5;
:ualification and Testing 8&/ )/ and =;
$elding Processes 8);
$elding !pplications 8=;
%roessional Society Standards
0.1.1.6.2.T12.95.12
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Standards that Impact Fabrication
$efinitions and Symbols
!%"!$% !2. %ymbols for $elding/ &ra,ing/ and
ondestructive (amination
)ommunication between designers and fabricators
Boint geometry/ weld contour/ surface finish
!%"!$% !.0 %tandard $elding Terms and
=efinitions
%tandard terms for use in written and oral communication
conveying materials Coining information
onstandard terms
%roessional Society Standards
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Standards that Impact Fabrication
ANSI%AWS $&'& Structural Welding Code Steel
Auidelines for design of welded Coints as well as
pre<ualified Coint geometries
%tatically loaded structures
=ynamically loaded structures
Tubular sections
=etails the processes used with particular Coints
*ow to <ualify welding procedures and personnel
7utlines <uality and inspection in welded construction #iller metal recommendations
%roessional Society Standards
0.1.1.6.2.T1.95.12
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Standards that Impact Fabrication
AWS $&'& re*ualified +oint $esign
0.1.1.6.2.T15.95.12
%roessional Society Standards
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Standards that Impact Fabrication
AST, (American Society for Testing and ,aterials)
%pecifications cover virtually all materials used in industry
and commerce/ but not welding consumables
!nnual &oo> of !%T' %tandards/ 15 sections 865
volumes; 1 "ron and %teel
2 onferrous
'etal test methods and analytical procedures
%pecification of groups of similar steel 8!; !6 general construction steels
!4D chromiummolybdenum steel for elevatedtemperature
service in piping and pressure vessel systems
%roessional Society Standards
0.1.1.6.2.T16.95.12
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Standards that Impact Fabrication
American Society of
,echanical -ngineers (AS,-)
Boiler and Pressure Vessel Code has 11 sections and is
referenced by most states/ maCor cities in the -.%./ )anadian
provinces/ a number of federal agencies
&efore fabricating a boiler or pressure vessel/ a company
must have a <uality control system and a manual describing
it
!%'( issues a )ertificate of !uthori,ation and a code symbol stamp
-ni<ue in that it re<uired rd party inspection independent offabricator and user
-ses same steel designations as !%T'
%roessional Society Standards
0.1.1.6.2.T1D.95.12
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Standards that Impact Fabrication
.oiler and ressure /essel Code
%ection "" 'aterials %pecifications for base metals/ filler
metals/ flues
%ection E ondestructive (amination
%ection "F $elding and &ra,ing :ualifications forpersonnel and procedures
=elineates a P number grouping of steels for the purpose of
welding <ualification
P1 carbonmanganese steels with a minimum -T% of 590 >si P5 alloy steels with 2.259G chromium/ H10G total alloy
!ll steels within a P number can be welded with the same
procedure
%roessional Society Standards
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Standards that Impact Fabrication
Other Standards
!merican Petroleum "nstitute 8!P"; %tandard 110
$elding of Pipelines and @elated #acilities
:ualifications of $elding Procedures and $elders
"nspection and nondestructive testing
@epair and removal of defects
-nified umbering %ystem 8-%;
)ross references the numbering systems from different
countries
7ver 500 metals/ alloys/ and filler metals
=esignated %!( *%B1046 !%T' =%56
%roessional Society Standards
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!urn to the person sitting ne't to you and discuss () min*+,
• "hat does being a -third party consensus standards
writing body. mean/
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0ualiication
&
Certiication
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"elding %rocedure Speciication ("%S+
%rocedure 0ualiication 1ecord (%01+
"elder %erormance 0ualiication2Certiication
A document that provides in detail re3uired welding
conditions or a speciic application*
A record o actual welding conditions used to produce anacceptable test joint and the results o the 3ualiication tests*
A record o a welder4s or welding operator4s ability to produce
welded joints that meet prescribed standards
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%re20ualiied %rocedures(Some Codes %ermit 2 5'ample A"S 6)*) Code+
7ased on the reliability o certain proven procedures
spelled out by the applicable code or speciication
• 8se "ritten %rocedures From Code
• All 5ssential 9ariable Speciied
• "eld 0ualiication !ests :ot 1e3uired
• 5mployer Accepts 1esponsibility or 8se
• 6eviations :egate %re3ualiied Status
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7asic Steps in 0ualiication o a %rocedure
)* %repare a preliminary "%S;* %repare and weld a suitable test weldment using "%S
<* Conduct re3uired :6! and 6estructive !ests
=* 5valuate 1esults o prep> welding> testing
?* 6ocument results on %01
@* Issue approved %01
* Issue approved "%S
%01 "%S 9 i bl C id d
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%01 2 "%S 9ariables Considered
• 7ase Betal
• "elding %rocess
• Filler Betal• !ype o Current1ange
• 9oltage
• #eat Input
• !ravel Speed• oint 6esign and !olerances
• oint and Surace %rep
• !ac$ "eldDrind O/
• "elding 6etails
• 5lectrode SiEe• %asses
•"eave
• %osition
• %reheat and Interpass• %eening
• Second Side %rep
• %ost "eld #eat !reat
• 1ecords (I 1e3uired+
Chec$ Speciic Code or List o 5ssential 9ariables(5ssential 9ariable Bust 7e Included in the "%S+
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!ests Commonly 8sed or %014s
!est 5valuation
7racture 8ests
5Charpy- C4D- Drop6
!is$ of Brittle 7racture at 9se
8emperature
,ic$'#rea$ Determine Weld Soundness
7ree Bend Ductility of Weld etal
Shear 8est Shear Strength of 7illet Welds
"ardness 2deuacy of "eat 8reatment2ll'Weld'etal 8ension echanical Prop of W
;levated 8emp Prop at ;lev Service 8emp
!estraint 8est Crac$ Suscepti#ility
Corrosion Prop 3n 2ggressive ;nviron
,D; Soundness of WeldDelayed Crac$ing !esistance to " Crac$ing
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"elder %erormance 0ualiication
9ariables• "elding %rocess
• Filler Betal
• %osition
• oint 6etails• !hic$ness
• !echni3ue
(0ualiying in a more diicult position
may 3ualiy in an easier position+
6uration O 0ualiication
6ependent upon Code
(8sually inactivity o < to @ months re3uired re3ualiication+
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%erormance0ualiication
1ecord
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"elding %rocedure and %er&ormance 0uali&ication 9ariable !hat Bay 1e3uire 1e3uali&ication
%rocedure 9ariable %rocedure 1e3uali&ication
Bay 7e 1e3uired
"elder or Operator
1e3uali&ication
Base 1etal 58ype-Composition- Process6
Change in B1- Some Codes.ist ;:uivalencies
9sually ,ot !e:uired
8hic$ness of B1 Change 4utside 8hic$ness
!ange
Change 4utside !ange
<oint Design Change in !oot- 3ncluded
2ngle- Dimensions
Change in !oot- 3ncluded
2ngle- Dimensions
Pipe Diameter 9sually ,ot !e:uired When !educed Below Some1inimum
8ype of Current- Polarity 9sually ,ot !e:uired 9sually ,ot !e:uired
;lectrode Classification- Si=e Change in ;lectrode
Classification or si=e
Change in ;lectrode
Classification or si=e
Welding Current When 4utside !ange 9sually ,ot !e:uired
Position- Progression 9sually not !e:uired- ButDesira#le
When Change ;>ceeds .imits
Deposition of 7iller 1etal 7or 1ar$ed Changes 9sually ,ot !e:uired
!oot Prep - 4ther Side When 1ethod or ;>tent "asChanged
9sually ,ot !e:uired
Preheat- 3nterpass 8emp When 4utside !ange 9sually ,ot !e:uired
Postheat 8emp When 4utside !ange 9sually ,ot !e:uired
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1un the -"elding %rocedure Speciication.
rom the -6emonstration %age. o the "5<GG
"eb %age