BBV HS2 MWCC North - HSST 1020. Third-party welding inspection services

This procurement package outlines the scope of services required from a third-party company to provide welding inspection services for the construction of key steel structures as part of the HS2 Curzon Approach Viaducts.

The assets include the Duddeston Junction Viaduct and Curzon 2 (Supplied by Martifer), Saltley Canal Under Bridge, Lawley Middleway and Curzon 3 Tripods (Supplied by Severfield UK).

These structures involve critical steelwork, including prefabrication and onsite assembly, which require independent, qualified inspection services to ensure adherence to project specifications and quality standards.

The steelwork will be executed in compliance with the HS2 Specification for Civil Engineering Works - Series 1800: Structural Steelwork (Document Number: HS2-HS2-CV-SPE-000-011800) and BS EN 1090-2:2018 Part 2: Technical Requirements for Steel Structures.

The third-party company is expected to provide comprehensive welding inspection services, including but not limited to visual inspections, non-destructive testing (NDT), certification and reporting.

Scope of Services: Offsite Pre-Fabrication Inspections • Regular Inspections: Conduct scheduled inspections at the fabrication plants of Martifer and Severfield UK to ensure compliance with ITP, Welding Procedure Specifications (WPS) and NDT procedures. • Welder Qualifications: Verify that welders are certified in accordance with BS EN ISO 9606-1 and maintain a record of welder qualifications. • Welding Procedures: Review and verify welding processes, including joint preparations, fit-up and perform inspections during welding to check welding parameter comply with the WPS. • Welding Consumables: Ensure that the welding consumable are suitable for the process and stored in a controlled environment e.g temperature, humidity. • Non-Destructive Testing (NDT): Oversee the NDT (Visual, MPI and UT) and ensure that these tests meet the required acceptance criteria as per SCEW 1800.

This includes reviewing and certifying the results of NDT methods performed on welds. • Progress Reporting: Provide weekly progress reports on the status of inspections, findings and corrective actions needed for non-compliant work.

Onsite Welding Inspections: • Field Inspection: Inspect all field welds during the onsite assembly of the steel components at the project locations (Duddeston Junction Viaduct, Curzon 2, Saltley Canal Under Bridge, Lawley Middleway and Curzon 3 Tripods.

Ensure that welding operations adhere to approved WPS and project standards. • Weld Monitoring: Conduct inspection and verification of joint preparation, welding parameters, intermediate passes and final weld visual inspection. • Non-Destructive Testing (NDT): Oversee the NDT (Visual, MPI and UT) and ensure that these tests meet the required acceptance criteria as per SCEW 1800.

This includes reviewing and certifying the results of NDT methods performed on welds.