WELDING INSPECTION AND QUALITY CONTROL

DESCRIPTION

This course addresses all the aspects that are critical to understanding this demanding area; it contains the technical information that the personnel in this area must know to perform their jobs properly. It is designed to be of tremendous benefit for personnel working to become Certified Welding Inspectors. It is also of practical use as a fundamental course for new personnel and for use as a refresher for more experienced personnel, and it is a valuable tool that helps management understand about the responsibilities of the people they supervise. This course was developed in cooperation with the American Welding Society.

COURSE MATERIALS

1. The Welding Inspector: who is the welding inspector?; qualifications; code of ethics; communications; responsibilities.
2. Metric Systems, Welding Terms and Symbols: SI International system of units; basic metric units; welding terms and definitions; welding positions; elements of and construction of welding symbols.
3. Welding Metallurgy: iron carbon system; iron-iron carbide diagram; diffusion; effect of cooling rates and alloy addition on transformation.
4. Weld Joint Preparation and Temperature Control: checks prior to weld joint preparation; joint preparation check; preheating and interpass heating; post weld heating; heating processes; insulation of heated joints.
5. Welding and Cutting Processes I: choosing the welding process; imperfections and discontinuities; oxyacetylene welding; brazing; arc-welding processes, SMAW, GMAW, FCAW, GTAW, SAW, stud welding, thermal and mechanical cutting.
6. Welding and Cutting Processes II: electrogas welding; plasma arc welding; resistance welding; flash; upset; adhesive bonding; percussion; solid state electron and laser beam; thermal; welding of plastics; soldering.
7. Welding Procedure and Welding Operator Qualifications: welding procedure specifications; joint designs; welding positions; heat input; preheat and interpass temperatures; removal of weld section for repair; post heat treatment.
8. Codes Governing Welding Inspection: structural welding code; ASME boiler and pressure vessel code; spot examination of welded joints; duties of the inspector; ASTM standards; API standards.
9. Weldment Imperfections and Discontinuities: classification of discontinuities; base metal discontinuities; methods of testing; glossary of weld imperfections.
10. Chemical, Metallurgical and Mechanical Testing of Welds: comparison of destructive and nondestructive tests; chemical tests; forms of corrosion; testing for corrosion resistance; metallographic test.
11. Visual and Liquid Penetrant Inspection: selection of NDT method; relationship of welding processes; discontinuities and inspection methods; visual inspection prior to, during and after welding.
12. Magnetic Particle and Radiographic Inspection: magnetic particle inspection; type of magnetizing current; demagnetization; interpretation of patterns; nonrelevant indications; radiographic sources; detectable discontinuities.
13. Ultrasonic Inspection: advantages; limitations; criteria for successful inspection; test equipment; techniques.
14. Eddy Current Inspection, Acoustic Emissions, Proof Tests and Leak Tests: eddy current inspection; fundamentals; inspecting welding pipe and tubing; applications; acoustic emissions; types of emissions; inspection of pressure vessels.

PARTICIPANTS

Although this course was originally designed as an educational assist form personnel desiring to become Certified Welding Inspectors, it can also be very useful for others in the welding field. This includes design engineers, welders, metallurgists, quality control technicians, sales personnel and purchasing agents who deal with welds and welding

INSTRUKTOR

Dr.Ir.Viktor Malau, DEA & Team