Part of the CSWIP 3.0 examination is to assess a Fillet welded T
Joint for sizes and visual acceptance of the weld and joint.
1) Firstly, the plate reference number must be recorded in the
top left hand corner of the report sheet, then thickness of the
plate is measured and then entered in the top right hand corner of
the report sheet in the boxes provided.
2) Secondly, both fillet weld leg lengths must be measured to
find both maximum and minimum leg lengths in both Vertical and
Horizontal legs. These values are entered in the boxes provided on
the report sheet. Use the gauge as shown below:
3) Thirdly, the maximum and minimum throat thickness is measured
and entered in the boxes provided on the report sheet. These values
are measured as shown below:
4) Having made all the above measurements they can be assessed
to a set of values that may be simply calculated from the plate
thickness.
a) The minimum leg length size is the plate thicknessb) The
maximum leg length size is the plate thickness + 3mmc) The minimum
throat thickness is the plate thickness x 0.7d) The maximum throat
thickness is the plate thickness + 0.5mmFor example if the plate
thickness is 6mm then the following will apply:
a) The minimum leg length size is 6mm (Plate thickness)b) The
maximum leg length size is the 9mm (Plate thickness + 3mm)c) The
minimum throat thickness is the 4.2mm (Plate thickness x 0.7)d) The
maximum throat thickness is the 6.5mm (Plate thickness + 0.5mmThis
means that the measurements taken must fall inside of the 2
tolerances calculated i.e.
Leg lengths must be between 6mm 9mm
Throat thickness must be between 4.2 and 6.5mm
If all the values are within these tolerances they are
acceptable. If any of the values fall outside of the calculated
tolerances then it becomes unacceptable.
It is important to remember that any change in thickness will
change the acceptance values calculated above.
When completing the report sheets from a sample it should appear
as follows:
Specimen Number F123
Material thickness: 6mm 1)Measure and record the following
details:
VERTICAL LEG LENGTH
(Max & Min)= Max 8 mmMin 7 mm
HORIZONTAL LEG LENGTH( )= Max 10 mmMin 5 mm
DESIGN THROAT THICKNESS( )= Max 8 mmMin 4.5 mm
2) Sentence the fillet weld dimensions using the following
design criteria:
MINIMUM LEG LENGTH: Material thickness (6mm)MAXIMUM LEG LENGTH:
Material thickness + 3mm (9 mm)MINIMUM THROAT THICKNESS: Material
thickness x 0.7 (4.2 mm)MAXIMUM THROAT THICKNESS: Material
thickness + 0.5mm (6.5 mm)
The vertical leg length ACCEPT or REJECT:
Please state: ACCEPT.The HORIZONTAL LEG LENGTH ACCEPT or
REJECT:
Please state: REJECT.
The THROAT THICKNESS ACCEPT or REJECT:
Please state: REJECT
Having assessed the weld for its size an inspection can then be
made on the surface to locate any imperfections. Firstly; the
report sheet requests the inspector to indicate the number of
locations that the following imperfections occur, if any?
3)The number of places that they occur should now be entered in
the box as follows:
UNDERCUT APPEAR?
3 places
OVERLAP APPEAR?
None
LACK OF FUSION APPEAR?
NoneCRACKS APPEAR?
None POROSITY APPEAR?
2 AreasSOLID INCULSIONS?
1 Slag InclusionMISC: [ARC STRIKES etc]
Spatter 4)For the defects recorded state the MAXIMUM length (and
DEPTH if applicable) of each defect
UNDERCUT:
Length: 15 mmDepth: Smooth 1.0mmOVERLAP:
Length: --------Depth: ---------
LACK OF FUSION:
Length: --------Depth: ---------
CRACKS:
Length: --------Depth: ---------
POROSITY:
Length: 6mm
Depth: Maximum SOLID INCLUSIONS:Length: 4mm
Depth: ---------
MISC:[ ARC STRIKES etc]Length: SpatterDepth: ---------
5)Then, using the code provided assess the levels of
imperfections with the allowance in the code as follows:
UNDERCUT:
ACCEPT
(Accept or Reject?)
OVERLAP:
ACCEPT
(Accept or Reject?)
LACK OF FUSION:
ACCEPT
(Accept or Reject?)
CRACKS:
ACCEPT
(Accept or Reject?)
POROSITY:
REJECT
(Accept or Reject?)
SOLID INCLUSION:
REJECT
(Accept or Reject?)
MISC: [ARC STRIKES etc]
REJECT**
(Accept or Reject?)
** All spatters should have been removed prior to submission for
inspection
6)Finally accept or reject the weld used for your visual
inspection as follows:
IS THE WELD ACCEPTABLE?
NO
YES/NOSignature:I C PlentyName:
I C Plenty
Date:
01-01-04Fillet Weld Leg Length:
The gauge may be used to measure fillet weld leg lengths of up
to 25mm, as shown on left.
Fillet Weld Actual Throat Thickness:
The small sliding pointer reads up to 20mm, or inch. When
measuring the throat it is supposed that the fillet weld has a
nominal throat thickness, as an effective throat thickness cannot
be measured in this manner.
Fillet weld throat:
The small sliding pointer reads up to 20mm and inch. In
measuring throat thickness it is assumed that the fillet weld has
normal root penetration.
CSWIP 3.0 Fillet Welded T Joint
6mm
Example of Practical Exam
Vertical Leg Length
Lowest leg measurement 7mm
Highest leg measurement 8mm
Actual Throat Thickness
Lowest throat measurement 4.5mm
Highest throat measurement 8mm
Horizontal Leg Length
Lowest leg measurement 5mm
Highest leg measurement 10mm
F 123
F 123
6mm
Report Sheet
F 123
This now completes the Fillet Welded T Joint Inspection
Assessment.
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