WELDING
INSPECTORS
WORKSHOP
1
WELDING INSPECTION
Welding inspection is used to verify that welding
has been performed in accordance with the
appropriate welding procedure and that the result
has produced a compliant weld
Welding inspection techniques include visual
inspection, non-destructive and destructive
testing as well as audits of the process
A defect is a condition of the weld that is out-with
the boundaries of acceptability in relation to the
particular standard
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Linear Misalignment
Manual Metal
Offset or Mismatch
Arc Welding MMA
High-low
13
Offset or Mismatch
Manual Metal
with lack of Root
Arc Welding MMA
Fusion
14
Cap concavity or
insufficient fill
Manual Metal
Arc Welding MMA
15
Excessive root
penetration
Manual Metal
Arc Welding MMA
16
External Undercut
Manual Metal
Arc Welding MMA
17
Root Undercut
Manual Metal
Arc Welding MMA
18
Root Concavity
(suck back)
Manual Metal
Arc Welding MMA
19
Root burn-through
Manual Metal
Arc Welding MMA
20
Incomplete or lack
of root penetration
Manual Metal
Arc Welding MMA
21
Inter-pass Slag
Inclusions
Manual Metal
Arc Welding MMA
22
Elongated Slag lines
(wagon tracks)
Manual Metal
Arc Welding MMA
23
Lack of side wall
fusion
Tungsten Inert Gas
Welding TIG
24
Inter-pass cold laplack of side wall
fusion
Tungsten Inert Gas
Welding TIG
25
Scattered Porosity
Manual metal arc
welding MMA
26
Cluster Porosity
Manual metal arc
welding MMA
27
Root aligned
porosity
Tungsten Inert Gas
Welding TIG
28
Transverse cracks
Tungsten Inert Gas
Welding TIG
29
Longitudinal crack
TIG/MMA
30
Longitudinal root
crack
Manual metal arc
welding MMA
31
Tungsten inclusions
Tungsten Inert Gas
Welding TIG
32