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:

1

Fillet Weld Leg Length:

The gauge may be used to measure fillet weld leg lengths of up to 25mm, as shown on left.

Fillet weld throat:The small sliding pointer reads up to 20mm and ¾ inch. In measuring throat thickness it is assumed that the fillet weld has normal root penetration.

Fillet Weld Actual Throat Thickness:

The small sliding pointer reads up to 20mm, or ¾ 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.

CSWIP 3.0 Fillet Welded T Joint

F 123

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 + 0.5mm

For 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 + 0.5mm

This 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:

2

6mm

F 123

Specimen Number F123 Material thickness: 6mm

1) Measure and record the following details:

VERTICAL LEG LENGTH (Max & Min) = Max 8 mm Min 7 mmHORIZONTAL LEG LENGTH ( “ “ ) = Max 10 mm Min 5 mm

DESIGN THROAT THICKNESS ( “ “ ) = Max 8 mm Min 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

3

Example of Practical Exam

Vertical Leg LengthLowest leg measurement 7mmHighest leg measurement 8mm

Actual Throat ThicknessLowest throat measurement 4.5mmHighest throat measurement 8mm

Horizontal Leg LengthLowest leg measurement 5mmHighest leg measurement 10mm

F 123

6mm

Report Sheet

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 mm Depth: Smooth 1.0mm

OVERLAP: Length: -------- Depth: ---------

LACK OF FUSION: Length: -------- Depth: ---------

CRACKS: Length: -------- Depth: ---------

POROSITY: Length: 6mm Depth: Maximum Ø

SOLID INCLUSIONS: Length: 4mm Depth: ---------

MISC:[ ARC STRIKES etc] Length: Spatter Depth: ---------

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/NO

Signature: I C PlentyName: I C PlentyDate: 01-01-04

4This now completes the Fillet Welded T Joint Inspection Assessment.