Third-party quality control inspection of steel fabrication centers on welding inspection, as well as inspection of bolting and painting of structural steel. KTA’s steel inspectors provide Quality Control (QC) inspectors to supplement fabricator’s/contractor’s in-house QC staff and on projects that mandate retaining the services of a qualified inspector (e.g., CWI) employed by an independent inspection firm. KTA’s QC inspector performs fabrication inspection and/or NDT services under the direct supervision and control of the contractor’s on-site Project or Quality Control Manager. Inspectors conduct visual inspections of material for conformance with the approved specifications, plans and codes, as well as verification of Certified Material Test Reports (CMTR) for materials used. Materials and components are observed at key points along the manufacturing process in both steel mills and steel fabrication shops. KTA’s certified welding inspectors also witness welder and welding procedure qualification tests as applicable to the scope of the project. Typical duties for in-process fabrication inspection include visual observations, monitoring of processes, verifying fit up and assembly dimensional accuracy, and product completion.
Steel fabrication inspection services also routinely include performing non-destructive testing (NDT) including Magnetic Particle Testing (MT), Ultrasonic Testing (UT) and Radiographic Testing (RT). NDT, also known as NDE (Non-Destructive Examination) is used to “look inside” materials to detect discontinuities and defects that may not be seen by visual inspection alone. The examinations are performed without damaging the materials, so that the tested materials are not wasted and may be put into service. NDT helps determine if the materials are acceptable for use as-is, contain defects that can be repaired, or must be rejected. Inspections take place in steel mills and fabrication shops throughout the United States and on-site in the field and include all varieties of structures including bridges, stadiums, buildings, towers, poles, and sign structures.
KTA has demonstrated such services on the following representative projects: