15 Questions
What is the purpose of a Welder Performance Qualification Record (WPQR)?
The WPQR certifies that a welder possesses the necessary experience and knowledge to perform the specifications of a particular weld procedure by combining the information of the WPS and adding the test results.
What is the role of a procedure qualification plate in the WPS qualification process?
A procedure qualification plate is welded to the code requirements and actual test parameters are recorded at the time of welding to ensure the WPS was being followed.
What types of tests are typically included in the WPQR?
The tests typically include X-Ray examinations, ultrasonic examinations, tensile testing, bend testing, and when required, impact testing.
How is a welder's qualification determined by MES?
MES conducts destructive and non-destructive tests on a weld coupon provided by the welder to determine whether the welder is capable of producing a good weld quality using the welding processes, materials, and prescribed procedures.
What is a Welder Performance Qualification (WPQ)?
A Welder Performance Qualification (WPQ) is a test certificate that shows whether a welder possesses the necessary experience and knowledge to perform the specifications of a particular weld procedure.
What is the correct technique to restart a bead in the SMAW process?
Strike the arc, move the electrode to the crown of the crater, then resume forward travel.
What should be done if the electrode sticks to the work piece in SMAW?
Use a quick twist to free it.
How can you tell if an electrode was lifted too high in the arc starting process?
The arc goes out.
What is the purpose of using a quick twist in SMAW?
To free the electrode if it sticks to the workpiece.
Why is it important to fill the crater at the end of a weld in SMAW?
To prevent weld cracking.
For wide groove weld joints or bridging across gaps, which type of bead works better?
Weave bead
When using weave patterns during welding, what should be the maximum width of the weave?
2 ½ times the diameter of the electrode
What type of movement is characteristic of a stringer bead?
Steady movement along seam
In vertical progression welding, what benefit does moving upwards provide?
Deeper penetration
When positioning the electrode holder for welding, what angle is recommended?
90 degrees or slightly up
Learn about the importance of approved welding procedures in the petrochemical industry, the skills required for welding, and the factors that affect the welding process. Test your knowledge on materials, processes, and procedures used in welding for quality construction.
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