WQT By Mr. Deepak Rai

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Welder Qualification Test

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General Arrangements for WQT :
1.Power Supply
2.Welding Machine
3.Welding Cable
4.Welding Holder

4. Tools & Machinery
Safety PPE for Welder :
1.Welding Helmet
2.Welding Gloves
3.Safety Googles
4.Safety Shoes

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Check list before starting the WQT :
1.Test Coupon Fit Up
2.Test Coupon Material Specification
3.Welding Position
4.Welding Process
5.Filler Wire & Electrode
6.Welding knowledge of Performer

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Why check Test Coupon Fit Up?
1.We must identify the Root Gap, Mis Matc
h, Overlap, Dimension of Test Coupon, Thicknes
s Range.

8. 7
Why Test Coupon Material Specification?
Material Specification is required before WQT.
Based on material specification only we can approve the
Filler Fire / Electrode, Pre-Heating.
We have various types of material. CS, SS, GI, Alloy, Dis
similar, Etc..

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Why Welding Position checking required?
We have 6 types of Welding Positions.
1.Flat Position - 1G
2.Horizontal Position - 2G
3.Vertical Position - 3G
4.Overhead Position - 4G
When it comes to Piping there are 4 Welding Positions
1.Rolling Horizontal Position - 1G
2.Rolling Vertical Position - 2G
3. Fixed Horizontal Position - 5G
4. Inclined Position (45° Angle) - 6G

10. What is Welding Process ?
A Process which can describes how to weld in a process called
Welding Process.
There are 4 types of Welding Process.
1.GTAW : Gas Tungsten Arc Welding
2.SMAW : Shielded Metal Arc Welding
3.GMAW : Gas Metal Arc Welding
4.FCAW : Flux cored Arc Welding

11. Using of Filler Wire & Electrode Material
Filler Wire & Electrodes must use as per material specification.
Because every filler wire & electrode contains own mechanical
prosperities.
As per ASME Groups are segregated into Groups
P Group
A Group
F Group

12. Why need to take interview of Performer?
Welding performer must know about welding
parameters, welding procedure, welding position, Welding
process, Filler wire & electrode consumption & Identification.

13. ThankYoufor YourSupport &Opportunity