Welding Engineering
Course outline
Verify that the material is in accordance with drawing / WPS identified and traced to a test certificate in suitable condition (free from damage and contamination).
- WPS is approved and available to welders (and inspectors).
- Welding equipment is in suitable condition and calibrated as appropriate.
- Weld preparations are in accordance with WPS (and/or drawings).
- Identification of welders qualification for each WPS to be used and all welder qualification certificates are valid.
- Welding consumables to be used are as specified by the WPS stored/controlled as specified by the QC procedure.
- Joint fit-ups are in accordance with WPS / drawings
- Tack welds are acceptable per standards, code or WPS.
- Weld faces are free from defects, contamination, and damage.
- The minimum temperature for Preheat (if required) is in accordance with WPS.
Duties during welding
- Ensure weather conditions are suitable / comply with Code (conditions will not affect welding) when on-site / field welding.
- Welding process must be in accordance with WPS.
- Preheat (if required) minimum temperature is being maintained in accordance with WPS.
- Inter-pass temperature maximum temperature is in accordance with WPS.
- Welding consumables are in accordance with WPS and being controlled as the procedure.
- Welding parameters e.g. Current, volts, travel speed are in accordance with WPS.
Root run is visually acceptable to Code before filling the joint (for single sided welds).
- Gouging / grinding only allowed by an approved method and to good workmanship standard.
- Inter-run cleaning must be at good workmanship standard.
- The welder is on the approval register /qualified for the WPS being used.
Duties after welding
- Each weld is marked with the welder’s identification and is identified in accordance with drawing/weld map.
- Ensure welds appearance is suitable for all NDT (profile, cleanness, etc) and visually inspect welds and sentence in accordance with Code.
- Check to ensure the dimensions are in accordance with drawing/Code.
- Ensure any modifications are included on as-built drawings.
- Ensure all NDT is complete and reports are available for records.
- Monitor repair work in accordance with the procedure.
- Monitor PWHT process (if required) for compliance with the procedure (check chart record).
- Ensure test equipment for Pressure/load test (if required) is calibrated. Monitor test to ensure compliance with procedure/Code and ensure reports/records are available.
- Ensure all reports/records are completed and collated as required.
