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API 1104
The API standard, Welding of Pipelines and Related Facili es. This standard is o en used in
construc on of cross country pipelines
ASME
American Society of Mechanical Engineers
ASNT
American Society of Nondestruc ve Tes ng
AWS
American Welding Society. Has 9 codes and many standards.
AWS A3.0
The AWS Standard Welding Terms and Defini ons
AWS B1.10
The AWS guide for the Nondestruc ve Examina on of welds
AWS B1.11
The AWS guide for the Visual Examina on of Welds
AWS B5.11
The AWS specifica on for the Qualifica on of Radiographic Interpreters
AWS D1.1
The AWS Structural Welding Code-Steel.
AWS D1.5
The AWS Bride Welding Code used in the U.S. for the construc on of bridges
AWS D15.1
,The AWS Railroad Welding Specifica on-Cars and Locomo ves. This specifica on covers welding
of railroad cars and locomo ves.
CAWI
Cer fied Associate Welding Inspector
CWI
Cer fied Welding Inspector
KASH
An acronym for Knowledge, A8tude, Skills and Habits. The basic tools of a welding inspector.
NDE
Nondestruc ve examina on.
NDI
Nondestruc ve Inspec on
NDT
Nondestruc ve Tes ng
QC1
The AWS Standard for AWS Cer fica on of Welding Inspectors. Defines the requirements and
program for the AWS to cer fy welding inspectors.
SCWI
Senior Cer fied Welding Inspector
SNT-TC-1A
The ASNT Recommended Prac ce, Personnel Qualifica on and Cer fica on in Nondestruc ve
Tes ng, outlines the cer fica on program for NDT technicians.
Actual Throat
The shortest distance between the weld root and the face of a fillet weld
Back Weld
A weld made at the back of a single groove welded joint a er the comple on of the groove
weld.
,Backing
A material or device placed against the back side of the joint or at both sides of a weld in ESW
and electrogas welding, to support and retain molten weld metal. The material may be par ally
fused or remain infused during welding and may be either metal or nonmetal.
Backing Weld
Backing in the form of a weld, made before the primary weld.
Backstep Sequence
A longitudinal sequence in which weld passes are made in the direc on opposite to the
progression of welding.
Bevel
An angular edge shape.
Bevel Angle
The angle between the bevel of a joint member and a plane perpendicular to the surface of the
member. This dimension equals one half of the groove or included angle when the edges of
both members are prepared at the same angle. When only one member is prepared at an angle,
this dimension is s ll indicated in the same posi on on the welding symbol for groove angle, but
equals the total degree of prepara on of the groove.
Bevel Groove Weld
A type of groove weld in which the ma ng members of the joint have one single-bevel or
double-bevel edge and one square edge prepara on.
Block Sequence
A combined longitudinal and cross sec onal sequence for a con nuous mul ple pass weld in
which separated increments are completely or par ally welded before intervening increments
are welded.
Boxing
The con nua on of a fillet weld around a corner of a member as an extension of the principle
weld
Buildup
A surfacing varia on in which surfacing material is deposited to achieve the required
dimensions.
, Bu= Joint
A joint between 2 members aligned approximately in the same plane.
Bu=ering
A surfacing varia on that deposits surfacing metal on one or more surfaces to provide
metallurgically compa ble weld metal for the subsequent comple on of the weld.
Bu8ng Member
A joint member that is prevented, by the other member, from movement in one direc on
perpendicular to its thickness dimension. For example, both members of a bu= joint, or one
member or a T-joint or corner joint.
Cascade Sequence
A combined longitudinal and cross sec onal sequence in which weld passes are made in
overlapping layers.
Chain Intermi=ent Fillet Weld
An intermi=ent weld on both sides of a joint in which the weld increments on one side are
approximately opposite those on the other side.
Cladding
A surfacing varia on that deposits or applies surfacing material usually to improve corrosion or
heat resistance.
Complete Joint Penetra on
A joint root condi on in a groove weld in which weld metal extends completely through the
joint thickness.
Concave Fillet Weld
A fillet weld having a concave face.
Concavity
The maximum distance from the face of a concave fillet weld perpendicular to a line joining the
weld toes
Convex Fillet Weld
A fillet weld having a convex face.