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AWS-UT-OI
ULTRASONIC TESTING
PROCEDURE
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008
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AWSDl.l :
2006Edition
ULTRASONIC TESTING PROCEDURE
as
per
AWS D1.1 2006 Edition
GLOBAL
INSPECTION
PREPAREDY:
NDT Manager
SIGNATURE:
Date 30 Tan
2008
GLOBAL
INSPECTION
APPROVED Y:
ExecutiveDirector
SIGNATURE:
Date
30
Tan
2008
Globallnspectionervices dn
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Edition
PROCEDURE
FOR
ULTRASONIC
TESTING
(
AWS
D1.1 2006
Edition
)
TABLE OF CONTENTS
Description
1.0 Scope
2.0
Personnel
Qualification
3.0
Equipment
4.0
Equipment
PerformanceChecks
5.0 System
Calibration
6.0
Testing
Procedure
7.0 Acceptance
Rejection
Criteria
8.0
Records
9.0
Attachments
Appendix
I
Appendix
II
Appendix
II I
Appendix
IV
Appendix
V
Page
No.
4of40
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'1.3
of
40
14of40-40of40
Probe
ndex of
Shear
Wave
Probe
BeamAngle
of Shear
Wave
Probe
Time-Base
inearity
Equipment
Gain
Linearity
Probe-Equipment
Combined
Resolution
Global
nspection ervices
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TABLE OF CONTENTS
(CONT'D)
Description
Page
No.
Appendix
VI
-
Sweep
Range
Appendix VII
-
DAC Curve
and Sensitivity
Setting
Appendix VIII
-
TransferCorrection
Ultrasonic
Test
Report Format
Ultrasonic
Test
Equipment
Performance
Checklist
Table6.2
-
Acceptable-Rejection
riteria Statically
Loaded
Table6.3
-
Acceptance-Rejection
riteria
Cyclically
Loaded
Table6.7
-Testing
Angle
Table6.7
(Cont'd)
-
Testing
Angle
Figure 6.24
-
Plan
View of UT
Scanning
Pattern
Figure 6.7
-
Class
R Indications
Figure 6.7
-
Class
R Indications
Cont'd)
Figure
K-12
-
Discontinuity
Height
Dimension
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SCOPE
1.1 This
procedure
describes he
method
to be employed
by
Global
Inspection Services Sdn
Bhd
for the Ultrasonic
Testing
in
accordance
with the following
code and standards.
AWS
D1.1:2006
1,.2 This procedure
is intended
for the inspection
of
groove
welds
on steel fabrication with parent metal thickness 8mm and
above.
It is also applies
to the testing
of steel
plate
or
pipe
for
parent
metal discontinui ties.
PERSONNEL
QUALIFICATION
All
personnel
performing
ultrasonic
testing
shall
be
qualified
and
certified
in
accordance
with the Written
Practice
or the
qualification
and certification
of personnel,
which conforms
to
ASNT
Level
II
or
PCN Level
II or CSWIPor
equivalent.
EQUIPMENT
3.1 Flaw
Detector
3.1.1
The flaw detector
shall
be Sonatest
SSLL0,
Panametric
Epoch
II or Epoch
48 or
Epoch
XT or equivalent.
3.1.2The flaw
detector
shall
be calibrated
and
certified
within
1,2months
prior to
use.
3.2 Probes
3.2.1.
A minimum
of one
(1) zero degree
probe
and
three
(3)
angle
probes
(45,60 and
70') shall
be made
available
on
each
esting.
1.0
2.0
3.0
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d i t ion
3.2.2
The recommended choice of angle probes
for scanning
different material thicknessare
as follows:-
Material
Thickness
Angle to be
Used
(* )
Dimension
(mm)
Recommended
Frequency
8-38mm
700 8x9
2
-
SMHz
38mm and
above
45o,
0o,70o
8x9
2
-
5MHz
(.) All parent materials o be scannedwith 0o,2 - 5 MHz,10
mm diameter probe prior to
angle scanning.
However, the probes
which
give
the best
responseshould
be used, dependent on
the weld,
welding parameters
and
parent materials.
3.2.3 The angle probe
shall produce
a sound
beam
in
the
material being tested
within
plus
or
minus
2o.
3.2.4 Eachangle probe shallbe clearly
marked to
indicate:
a.
frequency
(Mhz)
b. beamexit
point
c. beam ncident
angle
3.3 Couplant
3.3.1
The couplant
to be
used between
the
probe
and
inspection surfaceshall be paste and water mixture of a
suitable
consistency.
3.3.2 The same
couplant
shall be
used for
both
system
calibration and
testing
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Ed i t ion
3.4
Calibration
Blocks
The International Institute of
Welding
(IIW) V1./V2
ultrasonic
referenceblock shall be
the standard block
to be
used
for both
distanceand
sensitivity calibration.
4.0
EQUIPMENT PERFORMANCE CHECK
4|1, The type of performance
checksand
their
frequency shall
be
as
the following:
a. Horizontal
linearitv
40 hours
b. dB linearity
weekly
c. Amplifier linearity
weekly
d.
Internal reflectionof
every
8 hours
of use
of probe
e.
Probecontactsurface
beginning
of shift and
every 8
hours of
use
f. Probebeam
exit pointbeginning
of shift
and every
8 hours
of use
g.
Probebeam exit
angle
beginning
of shift
and every
8 hoursof
use
h.
Resolution
every change
of
probe
shoe
i. Ultrasonic equipment
every
12 months
certification
/
calibration
j.
Max. penefrating
power
weekly
4.2
Performance checks
shall
be conducted
on
the equipment
with
recordskept
at
QA
office
and to
be audited
by
client.
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Edit ion
SYSTEM CALIBRATION
Ultrasonic testing equipment
and
probes shall
be checked
for
the
performance.
The equipment shall
be calibrated
for the
functions
using the following
calibrationprocedure.
5.0
Appendix I
Appendix II
Appendix III
Appendix IV
Appendix
V
Appendix VI
Appendix VII
Appendix VIII
Probe ndex of Shear
Wave
Probe
BeamAngle of
ShearWave
Probe
Time-Base inearity
Equipment Gain
Linearity
Probe-Equipment
Combined
Resolution
Sweep
Range
DAC Curve
and Sensitivity
Setting
TransferCorrection
6.0 TESTING
PROCEDURE
6.'l", SurfacePreparation
6.1..1.
he condition
of atl surfaces
shall
be such
that
a
satisfactory
oupling
between
probe
and test
surfaces
an
be maintained.
6.1..2
The
visual examination
of
welding
andf ot
material
under
test shall
be carried
out
to
ascertain
any
surface
defect
or condition,
which
may
affect
the ultrasonic
examination.
6.1,.3 All spatters, loose scale, rust, coating and other
irregularities
over
the scanning
surfaces
on
any side
of
the
weld which
may
interfere
with the
transmission
of
sound
wave shall
be removed
by
wire brushing
or
light
grinding.
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Edit ion
TestingCoverage
6.2.L Welded
oints
requiring
Ultrasonic
Testing
shall be
tested
for their full
length unlessClient
specifies
partial
or
spot
testing.
6.2.2 The scanning shall
be done
from each
side of
the
weld
axis
where
possible.
The area
adjacent
o the
weld
shall
be prepared for at least 3 times the thicknessof material
being
inspected
both side of
weld
axis for
the smooth
scanning
surface.
6.2.3 The
volume
shall
be
examined
by moving
the
probe
over
test surfaces
so as
to scan the
entire
weld
volume
and
adjacent
area. Each
pass of the
probe shall
overlap
a
minimum, of
50%of the probe
dimension.
Parent
Metal Evaluation
6.31,
The entire
basemetal
through
which ultrasound
travel to
test
the weld shall
be tested
or laminar
reflector
using
a
zero
degreeprobe.
6.3.2
The scanning
shall
be performed
at sensitivity
setting
of
2"d back wall echo
to 80%
full screen
height
set
at
clean
basemetal.
6.3.3
The probe
movement
for examination
shall
not
exceed
L50mmper
second.
6.3.4 If
any of base
metals exhibits
total
loss of back
reflection
or
an indication
equal o or
greater
han
the original
back
reflection
height is
located n
a
position
that
will interface
with the normal
weld scanning
procedure,
its size,
location and depth
shall
be determined
and
reported
in
the ultrasonic
est
report.
6.2
6.3
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Edit ion
Weld Evaluation
6.4.1. The beam shall be directed
at approximately
right
angles
to the weld axis
from
two
directions
where
possible.
The
probe shall
be manipulated so
that the beam
passed
through the required
volumes
of
weld
and
adjacent
base
metal.
6.4.2 Sensitivity shall be
increased rom the
reference
evel
for
weld scanning
in accordance
with AWS DL.1
:
2006,
Table 6.2 or 6.3,as applicable.
6.4.3 The testing angle
and scanning
procedure
shall
be
in
accordance
with those shown
in AWS
D1.L : 2006,
Table
6.7
6.4.4
The probe movement
for the examination
shall
not
exceed
50mmper second.
6.4.5
For
transverse
discontinuities,
he
beam shall
be directed
approximately 5" o theweld axis.
6.4.6 Straight
Beam Scanning
-
Straight
beam scanning
of
the
adjacent base
metal shall
be performed
to
detect
reflectors that
might affect
interpretation
of angle
beam
result, and is
not to be used as
an acceptance
ejection
examination.
Locationand
areaof such
reflectors
shall
be
recorded
6.4.7 Angle
Beam Scanning
-
Angle beam
scanning
shall
be
directed at
approximate
ight angle o
the
weld axis
rom
two
directions where possible.The searchunit shall be
manipulated
so that
the ultrasonic
energy
passed
through the
entire
volumes
of
weld and
adjacent
base
metal. Scanning shall
be performed
at
a gain
setting
at
least two times
the primary
reference
evel.
Evaluation
shall
be performed
with respect o the
primary
reference
level. Selection
of probe
angle
would be governed
by
thickness of
weld and
angle of
weld
preparation.
6.4
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Edit ion
6.4.8
Butt
Joints
All
butt
joint
welds
shall
be tested
rom each side
of
the
weld axis. Corner and
T-joint
welds
shall
be primarily
tested
from
one
side of the
weld axis only.
All
welds
shall be tested using
the applicable
scanning
pattern
or
patterns shown
in AWS
D1.1 : 2006,
Figure 6.24
as
necessary
to detect both
longitudinal and
transverse
flaws.
It is intended that,
as a
minimum, all
welds
be
testedby passing sound through the entire volume of the
weld
and
the heat-affected
zone in two
crossing
directions,
wherever applicable.
6.4.9 For partial
weld penetration,
esting
and evaluation
shall
be
made up to the
weld size
as per specified
in
the
drawing.
6.4.10Maximum
Indication
When a discontinuity indication aPPearson the screen/
the
maximum attainable
indication
from
the
discontinuity shall
be adjusted
to
produce
a
horizontal
reference
level trace
deflection
on the
display.
This
adjustment
shall
be made
with the calibrated
gain
control
(attenuator),
and
the instrument
reading
in decibels
shall
be used
as the
"Indication
Level, a"
for calculating
the
"Indication
Rating,
d".
Horizontal
reference
evel
is 80%
of
full screen
height.
6.4.11,
Attenuation
Factor
The
"Attenuation
Factor,
c" shall
be
attained
by
subtracting
1 in
(25mm) from
the sound-path
distance
and multiplying
the remainder
by
2. This
factor shall
be
rounded out on
the
nearestdB
value.
Fractional
values
less than
1/z
dB shall
be reduced
to the
lower
dB
level
and those of
1/z
dB or
greater
increased
to
the
higher
level.
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Edit ion
12 Indication Rating
The
"Indication
Rating, d", represents
the algebraic
difference in decibels between the
indication level
and
the reference evel
with
the
correction or attenuation
as
indicated n the following expressions:
Instruments
with
gain
in
dB:
a-b-c=d
Instrument with
attenuation
dB:
b-a-c=d
Discontinuity SizeEvaluation
6.5.1,
Length
The length
of
indication shall
be determined
by
measuring the distance between
the probe
centerline
locations
where
the
indication rating
amplitude
drops
50To
(6
dB) below
the rating for
the applicable
classification. This
length shall be
recorded
under
"discontinuity
length" on the test
report.
6.5.2
Height
The discontinuity
height (depth dimension)
should
be
determined using
the following
methods:
(ii)
The indication
height should
be maximized
by
moving the search
unit to
and
from
the
discontinuity
in accordance
with A
of figureK-12.
The indication
height should
be adjusted
to
a
known value(e.g.,80% f full screen eightFSH).
The search
unit should
move
towards
the
discontinuity
until the
indication
height begins
o
drop rapidly
and continuously
towards
the
base
Iine. The
location of the
leading
(left) edge
of
the
indication at
location B in
FigureS.l2
in relation
to
the display
horizontal
base ine scale
should
be
6.4
6.5
(i )
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Edit ion
noted. A 0.10
nch (2.5mm)division
scale
or
metric
scaleshould
be used.
(iii)
The
search
unit
should
be
moved
from
the
discontinuity
until
the
indication
height
begins
o
drop
rapidly and
continuously
towards
the
base
line. The
location of
the
leading edge
of the
indication at
locationC
in Figure 5.12
n relation
to the
display
horizontal
baseJine
should
be
noted.
(i")
The mathematical
difference
between
B and
C
should
be obtained
to
determine
the
height
dimension
of
the discontinuity.
6.6
AWS D1.1 :
2006,
Class
R
shall
be
used
when UT
is used
as
an
alternative o
RT.
7.0 ACCEPTANCE/
REIECTION
CRITERIA
Eachweld discontinuity
shall be
accepted
r rejected
on
the
basis
of
its
indication
rating and
its length,
n conformance
with the
following.
7.1. Statically
Loaded Nontubular
Connections
AWS
D1.L :
2006'
Table 6.2.
7.2 Cyclically
Loaded
Nontubular
Connections
AWS
D'1.1' 2006
Table6.3.
7.3 Tubular
Connections
AWS Dl.1 :
2006,6.13.3J1',
lass
R
7.4 When UT
is
used
as an alternative
to RT
-
AWS
D1.1 :2006,
6.13.3.1.
lass
R.
7.5 For base
metal examination
AWS
DL.1
2006,5.15.1.1
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Edit ion
8.0 RECORDS
8.1 Identification
of Rejected
Areas
Each unacceptable
iscontinuity
shall be
indicated
on the
weld
by a mark directly
over the
discontinuity
for
its entire
length.
The depth from
the surface,
location along
the
weld
axis,
location within the cross
section,size
(or
indication
rating)
shall
be noted on
nearbv
base
metal.
8.2 Forms
For
each ultrasonic
testing carried
out,
the
following
information should
be dentified on
a
report form.
a. Client
b. Project
c. Materials
d. Procedure
Number
e. Report
Number
f . Date
g.
TestingStandard
h. Acceptance
RejectionCriteria
i.
UT
Equipment
Details
j.
Welding
Details
k. Material Thickness
l. SurfaceCondition
m. Probe
and Sensitivity
Details
n. Weld
Identification
o.
Results
k. PersonnelName,Qualification& Signature
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d i t ion
9.0
ATTACHMENTS
Appendix I
-
Probe ndex of Shear
Wave
Probe
Appendix II
-
BeamAngle of Shear
Wave
Probe
Appendix
III
-
Time-Base
inearity
Appendix IV
-
EquipmentGain
Linearity
Appendix V
-
Probe-Equipment
Combined
Resolution
Appendix VI
-
Sweep
Range
Appendix VII
-
DAC
Curve and Sensitivity
Setting
Appendix VIII
-
Transfer
Correction
Ultrasonic
Test Report
Format
UltrasonicTest
Equipment
Performance
Checklist
Table
6.2
-
Acceptable-Rejection
riteria
Statically
Loaded
Table 6.3 Acceptance-Rejection
riteria
Cyclically
Loaded
Table6.7
-Testing
Angle
Table6.7
(Cont'
d)
-
Testing
Angle
Figure 6.24
-
Plan View
of UT Scanning
Pattern
Figure 6.7
-
Class
R Indications
Figure 6.7
-
Class
R Indications
Cont'd)
Figure
K-12
-
Discontinuity
Height
Dimension
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Edition
APPENDIX
I
PROCEDURE
TO DETERMINE
THE PROBE
INDEX
OF SHEAR
WAVE
PROBE
In,VV1 - BLOCK
V2 - BLOCK
1.0
GENERAL
1..1.
IIW. V1 orV2block
may be
used.
1,.2 It
may be found
that
manufacturer's
marks
or
Probes
are
not
of
sufficient
accuracy
for the purpose
envisaged
and
the
Probe
index
is the
first probe
characteristic
which should
be checked
prior to checking he beamangle or Profile.
PROCEDURE
.0
2.1. Place the
probe
on the
block
as shown
above.
Maximized
the
signal
by
moving
the probe
backward
and
forward.
Parallel
to
the block sides.
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d i t ion
2.2 When
the signal
s at maximum
the
probe
ndex
will corresPond
to the engraved
ine on
the block
which marks
the
geometrical
centerof
the quadrant.
2.3 The
probe
index measurement
should
be repeatable
o
within
+/-
1mm.
If the
measured
position
differs
from
the
existing
mark by
more than
l"mm,
the new position
should
be
marked
on the
probe side
shall
be used
in subsequent
probe
check
and
defectplotting.
3.0
TOLERANCE
The
probe ndex shall
not differ by
*
/-
1.0mm.
4,0
FREQUENCY
OF CHECKING
This
will depend on
the
rate of
probe
wear due
to usage
and
to
the
roughness
of the
testing
surface.
When
a probe
is in continuous
use
daily
check
or at least
every
four
hours
s required.
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Edit ion
APPENDIX
II
PROCERURE
TO DETERMINE
THE BEAM
ANGLE OF
SHEAR
WAVE
PROBE
C
D
IIW V1 - BLOCK V2 - BLOCK
1.0 GENERAL
1.1
IIW. V1 or
V2 block
can be
used o
determine
he
beam
angle
of
shear
wave probe.
1,.2
The beam angle
checkshall
be
made on
probe
n conjunction
with
the
flaw detector
o be
used
n subsequent
esting.
2,.0 PROCEDURE
2.1 Place
the probe
on
Position
A to
H (depending
on
angle
of
probe)
as above
to
receive
a reflected
signal
from
the
selected
transverse
hole
in the block.
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2.2 Maximize the signal by
moving the probe
backward
and
forward.
When the signal
s maximized the beam
angle
can be
measured
using the probe
index and engraved
reference
ines on
the
block.
3.0
TOLERANCE
3.1
Accuracy
of
measuredbeam
angle shall be
+
/
-
2o
Marked
angles are normally
not accurate
or
worn-out
probes.
Measuredangle shall
be recorded
and marked on
the probe
and
used
n
subsequent
robe checks
and defect
plotting.
3.2
4.0 FREQUENCYOF
CHECKING
This will depend on the
rate of probe
wear due
to usage
and
to the
roughness
of
the testing surface.
When
a probe
is in continues
use.
Check shall be carried
out every
four hours or
daily before
production
test and the
new angle shall be
used or all evaluations.
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Edit ion
EVISION:0
APPENDIX
II
PROCEDURE
TO DETERMINE
THE
TIME-BASE
LINERITY OF
UT EQUIPMENT
C
25
mm
1.0 GENERAL
1..1. A compressional
wave
probe
(single or twin
crystals)
and
IIW
VL block
can be used
or this
check.
Range of
check shall
be at
last equal
to
that
which
is to be
used
in testing.
2.0
PROCEDURE
2.1, Place he
compression
wave
probe
on
Position
A
B or C
IIW
V1
block.
Adjust the
time-base
so
that the
first
and
fifth
back
walls echo
ndications.
Coincide
with particular
graticule
ine.
1,.2
100mm
I
I
J
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2.2 Beingsuccessive ackwall echoes,n turn, to approximatelythe
same height
(e.g.
80%
full screen).
The
leading edge
of
each
echo
should
lie
up
with appropriate
graticule
line.
Record
any
deviations,
measured at approximately
half full screen
height,
from the ideal positions.
2.3 For range
ess han 250mm,place
he probe
at B, the
range
greater
than
250mm,
place
he probe
at A or C.
3.0
TOLERANCE
Deviation of the base
ine linearity shall
not exceed
+
/
-
2% of the
full
Time-base ange, otherwise
recalibration
is required.
4.0 FREQUENCYOF CALTBRATION_
The check shall
be carried out
at leastonce
per
week if the unit
is used
Daily or prior to
production testing.
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Edit ion
APPENDIX
IV
PROCEDURE
TO DETERMINE
THE
LINEARITY
OF
EQUIPMENT
GAIN
B
100mm
9 l
mm
GENERAL
This is a check
on the
combined
result of
linearity
of calibrated
gain confrol
and the
amplifier.
Any standard
calibration
block
can be
used.
PROCEDURE
2.1
Place he
probe on
Position
A.
Adjust the
gain
to set
his signal
o
80% offull
screen
height
and the
note
the
value of
the calibrated
control
(dB). Adjust the
calibrated
confrol
to
increase
he
gain
by
2 dB.
The signal should
increase
o
full screen
height
(100%).
Restorethe gain to its original value and then reduce it by
further
6
dB.
The
signal should
fall to
40%of
full
screen
height.
Reduce he
gain by
a further
6dB.
The
signal should
fall
to
20%
of
full screen
height.
Reduce
he gain
by
a further
6 dB.
The
signal
should
fall to
10o/'of
full screen
height.
Reduce
he
gain
by
further
6 dB.
The signal
should
fall
to 5o/o
f
full
screen
height.
l - /
t r
- r \ -
- f l
. - l
I
I
I
I
1.0
1..1
1,.2
2.0
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2.2 To determine the screen
height
(amplifier) linearity.
Place he probe
on Position
B. Adjust
the probe
position
to
give
a 2:'J.
atio
of
amplitudes
between he
first and
second
back
wall
signal set
at 80%
full screen
height. Without
moving the
probe,
adjust the gain
control to successively
et the
first signal
from
20% o 100%
ull
screen
height, n L0%
or
2
dB
increments.
Read
the
amplitude of
the second
signal
at each setting.
Record
the
amplitudes
of both signals.
3.0
TOLERANCE
3.1,
Linearity of gain control.
Gain
(dB)
Limits
Expected
Screen
Height
+
2 Not
less han9l%
100
0-80
6 35%to45%
40
12
1.5%o25%
20
L8
8%to12%
L0
24
Must be
visible above
5
base
ine
3.2 Screen
Height
(Amplifier)
Linearity.
The amplitude
if
the
first (larger)
signal
must
be
twice
the
amplitude
of the
second
smaller)
signal,
within an
accuracy
of
+
/
-
5%
full screen
height.
4.0 FREQUENCYOF CHECKING
Recalibration
is
necessary
at
least once
every
month
or
when
maintenance
ervice
s carried
out on
the test
equipment.
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A W SD l . l : 2 0 0 6
E d i t i o n
APPENDIX V
PROCDURE
TO DETERMINE THE RESOLUTION
oF
PROBE-EQUTPMENTCOMBINATION
C
IIW Vl BLOCK
L.0
E
IOW BEAM
PROFILE
PROBE
GENERAL
1..1. This is a check the
ability of probe-unit
combined
to
discriminate
between signals
from separate
eflectors
ying
at
only
at
only
slightly different
rangesor
near to surface.
PROCEDURE
2.1. Compression
0) probe.
2.0
2.1,.1,Place the probe
on
Position A. Three
signals
from
the
85mm,91mm
and
L00mmshould
be clearly
displayed.
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2.1,.2Position
B and C
is to determine
the
near
surface
resolution
at the dead
zone of the
probe.
If the
reflection
from the Perspex
disc at
10mm
(C) and 5mm
(B)
could
not be displayed
it
should
be
noted as
reflector
within
the
region would
not be detected
dead
zone).
2.2
Shear
Wave
(Angle)Probe.
2.2.1, Place
he probe on
Position
D or
E. The signal
from
the
side drilled hole shouldbe distinguishablydisplayed'
2.2.2 Near surface
resolution
can be
determined
by
using
block
with
side
drilled
holesnear
to the surface.
3.0
TOLERANCE
The signal
amplitude of
subsequent
signals
should
be
clearly
separated
s ndicated
on the sketch
below.
Full Resolution
Partial
resolution
4.0
FREQUENCYOF
CHECKING_
The
resolution check
of probe
-
unit
combined
shall
be
carned
out
for
new probe,
when beam
ndex/angle
or
at
leastonce
a
month.
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Edit ion
1.0
APPENDIX
VI
SWEEP
RANGE CALIBRATION
GENERAL
Sweep range calibration shall
be conducted
using
IIW V1'/V2
calibrationblock
for
a suitable
ange
or
the
thickness
of material
being
tested. Table 2 may be use
for the selection
of sweep
range calibration
for difference in material thickness.
LONGITUDINAL
WAVES
IIW
-
V1 and
V2 blocks
calibration.
other suitable
blocks
can
be used
for
SHEAR
WAVES
(ANGLE)
PROBE
Either VL or
V2 blocks can be used
or calibration.
3.1 Use
IWVl
Block
Place angle probe on
the block
directing
at
L00mm
quadrant.
Set
up multiple signals
at
100mm
intervals
be
reflections
between
the quadrant
and
the notches
of the
face
of the
block.
Maximized
the chosensignal.
Then,
adjust
he time-base
ontrol
so that
the first of
the multiple
signals
(not
the
initial
pulse)
coincides
with the zero
gratrcule
mark,
and a subsequent
signal
coincides
with an appropriate
graticule
mark at the
right
hand
end
of
the
screen,
example
if the signal
at
L0mm,
20mm,
300mm,etc, he first signalwould be setat zeromark or third to
the
"'J.0"
mark if calibration
is required over
a
total
range
of
200mm.
When the correct
spacing
of
signals
has
been
established,
adjust the
delay only
so
that the
first
of
multiple
signals
are placed
at the graticule
mark
which
is to correspond
to
its true range.
2.0
3.0
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Edit ion
4.0
3.2 Use
IW V2
Block
Use
IIW
V2
Block
-
Placeangle probe on the
block directing
at
25mm
or 50mm quadrant. Set up
repeated
signals
at
25mm,
100mm, 175mm,
etc,
when probe is directed on
the
25mm
quadrant and 50mm, 125mm, 200mm, etc.,
when probe
is
directed
on
the
50mm
quadrant. Maximized the signals
from
the 25mm quadrant or from the 50mm quadrant.
Adjust
the
time-base ontrol so that:
(i) 25mm quadrant
-
the signal coincides
with the
25mm
graticule mark and the second
signal
100mm coincides
with 100mmgraticulemark.
(ii) 50mm quadrant
-
the 50mm signal
coincides
with the
50mm graticule
mark and the second signal
125mm
coincides
with 125mmgraticule
mark
If a point
of a sweep
ange calibration
has moved on the
timeless
by
more
than
10%
of
its original time
base position,
the
calibration shall be corrected
with a note of
the correction
being
made
on the
report. If any signals
have been
recorded,
all
recorded indications shall be
re'examined
with the corrected
calibration and their valuescorrected
accordingly on
the
report.
3.3
TOLERANCE
Accurate calibration of the sweep
range to
maximum range displayed
s required.
FREQUENCYOF CALIBRATION
This calibration shall be
verified
when:-
i) at the start of seriesof testing
-2%
or
better of
the
5.0
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ii) with any substitution
of probe
/
cable
iii) with any substitution of
power source
it) at leastevery
4 hours during
testing
v) at the
finish of testing
vi) at any time, when the opinion of the UT Operator, there is doubt
as o the
validity of the
calibration.
TABLE
2
Selection
of Sweep
RangeCalibration
for Difference
n Material
Thickness
SweepRange
Calibration
(mm)
Material
Thickness
mm)
0o Probe
45o
Probe
60'Probe
70'Probe
100
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Edit ion
APPENDIX
VII
DAC CURVE
AND SENSITIVITY
CALIBRATION
L.0 SensitivityCalibration
Standard sensitivity
for examination
of
Production
weld
using
amplitude technique shall
be: basic
sensitivity
+
distance
amplitude
correction
+
transfer
correction.
2.0
Basic
Sensitivity
Reference
evel
screen
height
obtained
using
maximum
reflection
from
the 1.5mm diameter
hole in the
IIW block
(or other
block
which
result
in the
same
basiccalibration
sensitivity).
3.0
Distance
Amplitude Correction
The sensitivity
level shall
be adjusted
to provide
for attenuation
oss
throughout
the
range
of
sound
path to be
used by
DAC curve.
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Edit ion
APPENDIX VIII
TRANSFER
CORRECTION
There
s a difference n instrument
sensitivity
between the reference
block
and test component
due to test surface
oughness, ontactarea,component
temperature and
acoustical attenuation characteristic.
A correction
in
instrument
sensitivity s required
to
compensateor thesedifferences
and
is
describedbelow:
RECEIVER
(TRANSMITTER) (position
)
Fixed
Screen
isplay
7 5%
s0%
2s%
2 SKIP
Use two
angle beam
probes of the same
type. One acting
transmitter and
the other
as receiver.
Place he probes in-tandem on the
referenceblock
at
one
skip
distance
and
maximize
the signal o70o/o.
ote down the gain
(dB).
Mark
on the screenor on
a graphicalpaper
the peak of the
maximized
signal.
Reposition the probes to achieve
peak signal
at two skip
distance
repeatstep
(3+)
and
join
the two points
to obtain
ine R.
1.0
2.0
3.0
4.0
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Edit ion
5.0
On
the
surface
of test component, carry-out
step
(2) and at
the same
dB
gain.
Increase o decrease he signal
where the peak
is
on
line
R and
note down the
gain
(dB) difference.
The difference
in dB gain of the
instrument
in
step
(2) and
(5) is
the
transfer correction
and has to be
added or subtracted
during sizing
of"
defects.
The first
skip
distancehas to be greater
han
four inches
or otherwise
the successivekip distances hould be employed.
6.0
7.0
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Edit ion
GLOBAL NSPECTIONERVICES
DN
BHD
(465777-A)
Seromban . 70, Jln PS 212,Tmn PinggiranSenawang,
71450,
Sbn,
N.S fel : 06
6775267 Fax : 06 6797900
6775354
Ultrasonic
TestingReport
Clint
Proj6ct
ProcedureNo
Report No.
Date
Probe
0 Deg
45 Deg
60
Deg
70 Deg
Frequency Size
Ref
Levsl
Tr Loss
Scanning
dB
Renge
m 2nd BWE to
m
Mhz m
FSH dB
dB
dB
M
m m
m m
M h z m d B d B d B m
M h z m d B d B d B m
Sensitivity:
Angle
probe,
set DAC at 80% FSH
from
3.2mm O
of 25mm hickness.Normal Prob
sst 2nd BWE to
1000/6 SH
CLIENT:
SIGNATURE
DATE:
Q C
O E P T :
SIGNATURE:
DATE:
INSPECTED
B Y :
SIGNATURE
DATE:
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Edit ion
GLOBAL INSPECTION ERVICESSDN
BHD
(6s777-^l
Seremban :70 ,J lnPS2/2 ,TmnPingg i ranSsnawang,71450,Sbn,N.S
e l :066775267Fax:066797900/6775354
CALIBRATION ERFORMANCEF ULTRASONIC
LAWDETECTOR
FLAW
DETECTORMAKER
MODEL
SERIAL
NUMBER
DATE ;
PROJECT:
TFST
TOTERANCE
RESUL
PASS FAIL
TIMEBASELINEARITY
+l-
2o/o
ECHO mm)
ls l
oh
rd
rd
4th
oh
5th
oh
AfiENUATOR
ACCURACY
(Ret
at 800/6 SH)
+
2dB
Not Less Than 950/6
0 E0%
dB 350/6o
45%
-18
dB Sohlo12oh
-24
dB Visible bovsbase
in 6
FSll tN
100oi6
%
800/6
oh
400h
oa
100h
oa
be visibl6 %
A M H L I F I E K
LINEARITY
DIFFERENCE ETWEENSMALLER IGNAL
AND
LARGERSIGNAL
HEIGHTTO BE
BETTER THAN 50/6 SH
,r.lvl
lll
*w
sMAt;r-,
$1,0{AU
'100%
oh
,A
oh
Yo
4004
oh
200/0
o/o
EUUIHMEN
I
RESOLUTION
ALL
(3)
ECHOES
O
BE CLEARLY
RESOLVED
PROB Si USED
t s E N E I K A I I U N
STRENGTH
MINIMUMOF
THREEBACK-WAILECHOES
RqNGE
mm}
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Edition
AVVS t.t/Dt.tM9006
sEcnoN
0.
NSPECnON
Table6.3
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drc AfcoatlurtU rhl
bc oddcrcd
r ftd. EptsL
dltdthft
2' ctrrrB rod c ditcootiitlticrol r&tgn ur dlluco hsiur2Lfro w;d6&clr:rhr Fimryicodtc ircc' Ltctnr tcdlcmhtry
Lottt.
3. D6odiaulrl6 ddccd
rrtcolrhglctd-h
tftclodfrceuaof
ClPdqUogoowwHJollsrhdlbccrobaradurhgo
hdiathgndtg4
dB
nororcdtiwrbudccr[od-h6.2e65;harsrcdd&rrcdcsln{crl|3tddorctUs'-oorhcdnwhl(slrgatts
filo6chtficdiodndrs
'(f1.Ihb< drpptyf-OurAOptttfr*gqtSla otdtld-n
rdtoF [ovc$ctodfErdt{Tus.d ovttfytbd60ltdfr' |tbcc
rtnovcd.
a.
For
hdbclootttlt
rtoala o
drc dlrplry nsthc crrtt uoll
b Eoyc4
t &i o6.13'2'1.
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0ugr
dtcdhullcs)
Aly
b.ttcltb h
6L clcapry rhrll bc
rejcdcd
r:udlcssdloCth).
Chss
(rodiun
di3omrhulths)
Aly
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ln
fib
crtc$ry brvi4g r l0ogth
trrtcr
t |[
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lz)uolrlull
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Cbtt C ($dl dii6ti0dllcs)
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trrr&r
tir
2 h.
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hthc
nl@obdf or3/,f h.
[20
nrll hlrth h rlc
lop
a
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d
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hlclp
sLl bc +d.
CI|'|D
(nbrdrcillbitlcs)
tuy hdlcdo
f rtbclqoqirll bcrocr6clrqrrdcrrof
tc4t c
locrthhthcr'Cld.
Silaiqelrrcls
Soundpetl*ilin
lnnl
AbovZcro
RcfucnocdB
dnough2-l/2
65
u]
>2-lntuvnrdt5[65
l2sm1
>stroutb10U2t
25Ontnl
> l0 througlt
5
[2t0
3EO
mmJ
m
E
35
15
|7lh
cohron tfcrr o
lod
gaf
dtu; liDT
adltl
tltlclce
sil6 >3t4
tbough trous
3t4 btn
a8
ml
t2o
381
.4&,
+7& +9&
lorycr lowcr
lowcr
+l&
+1&, +6&
lowei lowcr b\[cr
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i-g
+l l
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&up
+t3
+l l
&rp &np
+9 +12
+14
&up
&rp t lup
Global
nspection ervices dnBhd
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AWS-UT-o1
ULTRASONIC
TESTING
PROCEDURE
ISSUED 30 January
008
REVISION:0
AWS
Dl.l :2006
Edition
sEcToN . NsPEcTlor{
AWS
Ol.trDt.tM20(E
UTAccepta ce-Relectlon
Table
62
Grlterla
Statlcally
oaded
Nontubular
onnectlons)
see
6.13.1)
'rveE
dr. bhri
lohrrba[
bcfumnhdthi&c$of tlcttiuctof
Octro
Fr$bcl4tjohc.t
l,loac
t. Chs
B
rld C rtl$oottmtlca
oltl be
p0r&d by .t tclrr 2 +
L bct4t ttc tcrgtt d
lhc boScr dtradslhy,
Grcc 36rr
rrtm r*
or ore
rrl
dcmttruhtrri drapcncd bya
b& A" UriOo cotUce
tco4i of dLodlrtrilcs
r'ld OArropcrt6adfrrcc
boqurt
|06L't6r 6.
nulrum dc:bla tcqgtl
uo&rrbc
paorbloc
of Ctrs B
c
C,
c Ctsooofsfy
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r rhgla rocsFbla_dl$ailbuly..
1 Oon B rld C disod|;lhs Orl air tcgla u r Aiorcc tcrr ihol Zt nm ncU coa ctrylaf prtuy trroitc arr. L bolog6s ditcocittuity
lolgtt.
f.
pfioattutrg
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t
aqnaht bvcf
b
tlc
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CtP dcrbb
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Joho
Sall bcovdultcd
q t
.
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rr
lnSa
dB
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b.6r665
rhat
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*cldrre&dgmtcd
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rtl&'-sr rtodnrvlag
(sttatrc{.1@fi,m
0c bdicdo
rodoS
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thbedl d lPty f
d6rcurolll b HSwgcd
b 6md-mtrl
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tDc
oo(
he | d
MT'tEd
to
vtslf,
lt|ttlc
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hcc
btbcr
r |orrd.
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whlc;h
rclcd
2 b.
150
ral
h lcqffr rtrll bo ospcacd
rs bchg
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dldl bo
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o thc rlLplryrr tbc anrt
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baoo 4
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tuy hdicntbn h thb Caillgorybalt bc Jod
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of
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3t4
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38
6t >2-lf2rhrurSl4
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m]
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45"
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&' q
Global nspection ervices dn
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AWS-UT-OI
ULTRASONIC
TESTING
PROCEDURE
ISSUED 30
January
008
REVISION:0
AWSDl.l
:2006
Edition
GECTON O,
NIiPECTION
rws Dr.t/Dt.lM200t
Table6.7
TesUngAngle
(see
6.26.5.2)
Proccduc
Cbrt
Mrlaid Tticloccs, n
lruul
fl6tEl >r-r/2t381
r/4t4t
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o b
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l o l o 6 E 9 1 2
t O l F 6 F c F c F d F a F c F l z F
1 s 7 l 0 l t 1 3
T.
o
l o c
XF
F F F F F F
4 o c 5 o r 7 s r t 0 6 l t 6 1 3 o
XF XF
)(F
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o l o f
XF
t O F I G F 6 F t F 9 F 1 3 F
o r s o f 0 r o l c o f 6 6 6 0 c
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I
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or
or or P3
6 P3
or
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6
H'
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BUTTJONT'
@RNERJOINT
x
tpnst
FLUSH
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l. Wtrt
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rtl Grnh[b 3
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fton
tu A
d h f4s f,
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rpacftcd
h
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rornrt ficc f, tfc Uito
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of rfUur'tn
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ul tca of
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reCc.
Global
nspection ervices
dn
Bhd
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5
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AWS-UT-OI
ULTRASOMC TESTING
PROCEDTJRE
ISSUED 30 January
008
REVISION:0
AWSDl.l :2006
Edition
tyvs
Dr.r/Dt.1M:@6
SECTION6,
INSPECTION
Table 6.7
(Condnued)
lrgcod:
X
-Chockfron
FreqC"
G
-Grhdrrcldftccflrh
O
-NotrEqdnd.
A
Rcc-thc focc
of
ttc ntalal
&oo whlc.lr&c lrdtial crnolog
s &ne
(oa
T-
rld ffitcrJolrs,
btlonr rbqvc
3kctcbca).
B Froc opporttc
&c
-a
fe
(surc
plate),
C
Flce
-
thc
hoc
Apodtc
tbc rcld on bc
coreelog trarDcr
d .
T-
6 coacc
oinr
r -Rc$ftcd oalyntcrodighyrlfc$nca h.iSbthdicatio ofdiscotirnrig i3oobd t thc stldrutd-b.tc
ud lstcrf.ccxdilc$arching c$lDdtg
tcrcl
widrFitrrrryproccducs clcctd Eon
finr
colustlt
..
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t5in"
[,f(trnnl
r2Dh.[50nm] sserdilt@librrtb .
P
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lld crrh stdl
bc oduacd for font r discordoulry nluatlor
la
ooly 6c
trrldd hl|f
of
tbo
rurcrLl 61fus wlth
urly
45'
c
?0e rodusrtr
of cqud
pociflrcrtion,
ott frchg thc
wcltl
(Itrnr
ducctr
mrst be Dctd o r
lixtrt
o cod&ol
poddotag-rcc
rlcach.)
Anpltude olibndon
frr
pitch
rod clch
lr unrtlynr&tycrlhhg rrhllcrcrnbudl Wtcnruffcthsodtrrlrcd
unls
la
pirch
d ech laspocdo.0rcro bmtdbcrslrare 6rtttls
crlikrdodcuchrqersr
rtrultof
insuuncn vrrLbler.
F
-Wcld
E
rl$lre narl
hrcrfrcc
tadicrtiru
rlult bc
firrtcr cvrlurcd wlth
dthcr 7f, 60',
q
45o
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|q|ndp|& lr HtS
bbdrgpcoc.ldiculabthc nlpcclcd
ftsloo
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Arcrof WefdTilclqr
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Global
nspection ervices dn
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AWS-UT-OI
ULTRASONIC
TESTING
PROCEDURE
ISSUED
30
January
008
REVISION:0
AWS
Dl.1 :2006
Edition
sEcfloN
6. NsPEcTloN
AlrltS
l.1/Dl.lM20O6
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AWS-UT-01
ULTRASONIC
TESTING
PROCEDURE
ISSUED
30
January
008
REVISION:0
AWS
Dl.l :2006
Edition
Alrvg l.t/D .1M2000
sEcTroNG.
MIPECnON
qt
WEIDTHICKNESS.
mm
12 '
OVER
80
5
f;;
fE
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