Welding Engineering & Technology

QSC provides welding engineering and technical support throughout the welding lifecycle, from the development and qualification of welding procedures to fabrication supervision, inspection, repair and final documentation.

Welding services cover conventional industrial equipment, pressure vessels, structural components, piping systems and nuclear applications, under the governing construction code and project specification.

TIG welding arc
Overlay weld beads inside a large shell
Welding of a pipe-to-flange joint

Welding Engineering

  • Welding process selection
  • Weld joint design review
  • Material weldability and filler-material assessment
  • Welding parameter evaluation
  • Repair procedures
  • Preheat and interpass requirements
  • Heat-treatment considerations
  • Welding engineering documentation and process optimization

Welding Inspection

  • Preparation and fit-up inspection
  • Joint configuration verification
  • Visual inspection
  • Welding parameter surveillance
  • Consumable control
  • Weld examination and NDE coordination
  • Defect review and repair follow-up
  • Final acceptance documentation

Welding Coordination

QSC acts as Responsible Welding Coordinator to EN ISO 14731 for its clients. QSC holds International Welding Engineer (IWE), International Welding Technologist (IWT) and International Welding Inspector (IWI) qualifications.

  • Coordination of welding activities, personnel and procedures
  • Review of welding requirements
  • Monitoring of process compliance
  • Control of welding consumables
  • Evaluation of weld records, identification and traceability
  • Coordination of inspections
  • Resolution of welding-related quality issues

Welding Book / Welding Dossier

A complete, traceable welding dossier is often the document that decides final acceptance. QSC prepares and reviews welding books containing:

  • Welding index and weld maps
  • WPS, PQR and welder qualification records
  • Consumable and material certificates
  • Weld traceability
  • Inspection, NDE and PMI reports
  • PWHT records and heat-treatment charts
  • Welding repair records and NCRs
  • Final approval documentation

Welding Procedure & Personnel Qualifications

Support for Welding Procedure Specifications (WPS), Procedure Qualification Records (PQR) and welder / welding operator qualification.

  • Procedure development and qualification-test planning
  • Witness support
  • Essential variables review
  • Mechanical testing and recording of results
  • Qualification-range review
  • Continuity records and document management

Cladding & Overlay Welding

  • Weld overlay and corrosion-resistant cladding
  • Stainless steel and nickel-alloy overlay
  • Dissimilar-metal welding
  • Cladding procedure qualification
  • Layer thickness and dilution control
  • Surface preparation and material compatibility
  • PMI and ferrite assessment where relevant
  • Inspection, repair, NDE and final records

Typical Deliverables

  • WPS / PQR / WPQ packages
  • Welding inspection reports
  • Weld maps
  • Welding books / dossiers
  • Repair procedures
  • Welding coordination reports

Related Services

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Welding Engineering & Technology